Tomcat exception.... i don't understand...
Good afternoon peoples!
I am using tomcat 6.0.13.When i try to perform my servlet, the following exception is gone off :
exception
javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:595)
root cause
java.lang.NoClassDefFoundError: mypackage/Transportadora (wrong name: Transportadora)
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:620)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1817)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:595)
Would be this a problem in the definition of the class?
web.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlnssi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>Transportadora </display-name>
<description>
Projeto Transportadora
</description>
<servlet>
<servlet-name>Transportadora</servlet-name>
<servlet-class>mypackage.Transportadora</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Transportadora</servlet-name>
<url-pattern>/transp</url-pattern>
</servlet-mapping>
</web-app>
A great one I hug and grateful for the attention!
It forgives me for the message in the wrong forum...
Message was edited by:
tarssa
Message was edited by:
tarssa
Message was edited by:
tarssa
Seems it can't find the servlet class. Please make sure you have packaged it right in your WAR application file; there should be a Transportadora.class inside WEB-INF/classes/mypackage, or you should have included a JAR file below WEB-INF/lib containing the same class.
Good luck!
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Wrong codes? or maybe I don't understand the instructions
The instructions said "Write a procedure that will retrieve an
existing record in Enrollment usiing the student and section Ids
and set the grade to a specified value. (use update instead of
insert) and write another procedure that will assign a given
student a given advisor" I tried but cause I got a lot of
errors!!! any help would be appreciated just email me at
[email protected]. thanks!
create sequence room_seq increment by 1;
create sequence faculty_seq increment by 1;
create sequence student_seq increment by 1;
create sequence section_seq increment by 1;
create sequence enrollment_seq increment by 1;
create sequence room_section_seq increment by 1;
create table course(
courseNo varchar2(10),
name varchar2(30),
credits number,
constraint course_pk primary key (courseNo));
insert into course (courseNo, name, credits) values
('CIS405','ADVANCED DATABASE', 5);
insert into course (courseNo, name, credits) values
('CIS349','INTRO TO DATABASE', 5);
COMMIT;
create table room(
roomID number,
bldg char(1) check (bldg IN ('A','B')),
roomNo varchar2(10),
maxCapacity number,
style varchar2(15) check(style IN
('LECTURE','LECTURE/LAB','LAB','OFFICE')),
constraint room_pk primary key (roomID));
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151A', 50, 'LAB');
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151B', 50, 'LAB');
commit;
create table faculty(
facultyID number,
lname varchar2(30) not null,
fname varchar2(20) not null,
dept varchar2(5),
officeID number,
phone varchar2(15),
email varchar2(75),
rank char(4) check(rank IN ('INST','ASOC','ASST','FULL','SENR')),
constraint faculty_pk primary key (facultyID),
constraint faculty_fk foreign key (officeID) references room
(roomID));
insert into faculty(facultyID, lname, fname, dept, officeID,
phone, email, rank) values
(faculty_seq.nextval, 'CANNON', 'AMY', 'CIS',
6, '77052149003252', '[email protected]','FULL');
commit;
create table equipment(
equipmentID varchar2(30),
roomID number,
type varchar2(20) check(type IN('OVERHEAD PROJECTOR','PORTABLE
PROJECTOR','LAPTOP CONNECTION','DESKTOP COMPUTER','INTERNET
CONNECTION')),
constraint equipment_pk primary key (equipmentID),
constraint equipment_fk foreign key (roomID) references room
(roomID));
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('111',
5, 'DESKTOP COMPUTER');
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('222',
5, 'OVERHEAD PROJECTOR');
commit;
create table student(
stuID number,
lname varchar2(30),
fname varchar2(20),
street varchar2(100),
city varchar2(60),
state char(2),
zip varchar2(9),
major varchar2(5) check(major IN
('ACCT','ECT','EET','BIS','BSIT','CIS','TCOM')),
standing varchar2(10) check(standing IN
('FRESHMAN','SOPHOMORE','JUNIOR','SENIOR')),
gpa number(3,2),
advisor number,
constraint student_pk primary key (stuID),
constraint student_FK foreign key (advisor) references faculty
(facultyID));
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'SMITH', 'HEATHER', 'CIS', 'JUNIOR', 3.8,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'ELLIOTT', 'DAVE', 'CIS', 'JUNIOR', 3.65,
2);
commit;
create table section(
sectionID number,
sectionNo char(1),
courseNo varchar2(10),
facultyID number,
term char(4),
curSize number,
maxSize number,
constraint section_pk primary key (sectionID),
constraint section_course_fk foreign key (courseNo) references
course(courseNo),
constraint section_faculty_fk foreign key (facultyID) references
faculty(facultyID));
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'T', 'CIS405', 1, '1001', 17, 30);
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'G', 'CIS405', 2, '1001', 24, 30);
commit;
create table enrollment(
stuSectionID number,
stuID number,
sectionID number,
grade char(1) check(grade IN('A','B','C','D','F','I','W')),
constraint enrollment_pk primary key (stuSectionID),
constraint enrollment_stu_fk foreign key (stuID) references
student(stuID),
constraint enrollment_section_fk foreign key (sectionID)
references section(sectionID));
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 1);
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 8);
commit;
create table room_section(
roomSectionID number,
sectionID number,
roomID number,
day char(3) check(day IN
('MON','TUE','WED','THU','FRI','SAT','SUN')),
hour date,
term char(4),
constraint room_section_pk primary key (roomSectionID),
constraint room_section_section_fk foreign key (sectionID)
references section(sectionID),
constraint room_section_room_fk foreign key (roomID) references
room(roomID));
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('9:30
AM', 'HH:MI AM'), '1001');
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('10:30
AM', 'HH:MI AM'), '1001');
commit;
SQL> DESC ENROLLMENT
Name Null? Type
STUSECTIONID NOT NULL NUMBER
STUID NUMBER
SECTIONID NUMBER
GRADE CHAR(1)
SQL> CREATE OR REPLACE PROCEDURE Enrollment(
2 p_grade IN CHAR(1),
3 IS
4 v_stuid NUMBER,
5 v_sectionid NUMBER;
6 BEGIN
7 SELECT student_seq.NEXTVAL
8 INTO v_stuid
9 FROM DUAL;
10 UPDATE student
11 (stuid,
12 sectionid,
13 grade,
14 SET (v_stuid,
15 v_sectionid,
16 UPPER (p_grade),
17 COMMIT;
18 DBMS_OUTPUT.PUT_LINE ('Student added');
19 EXCEPTION
20 WHEN OTHERS THEN
21 DBMS_OUTPUT.PUT_LINE ('An error occurred');
22 END AddStudent;
23 /
I got those errors like above!!! I don't understand what the
instructions said. any assistance would be appreciated!David,
I am afraid that the
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE ('An error occurred');
was my fault. I had intended it as an example to provide only
minimal syntax where no exception handling whatsoever previously
existed. Beau is a student and I am trying to guide him in the
right direction without just writing all of it for him. In
fact, I am afraid I may have already provided too much code
without sufficient explanation. For you and others who may wish
to help, here are the e-mails that provide the background on how
we got to this point, with the most recent on top, starting with
the last resonse I sent to him:
Things that are wrong:
The instructions say to be sure to use the sequence number for
the student's ID, so you should not have p_stuID as an input
parameter. Instead you should create a variable and select the
student_seq.nextval into the variable from the dual table and
use that value to populate the stuid column.
Your input parameters should only have the variable type, not
the size, so just use varchar2 and number.
The check constraints only belong in the script that is used to
create the table, not in your procedure with your input
parameters, so remove them from the procedure.
The order and number of your columns you are inserting into and
values you are inserting must match, so if you insert into fname
then lname, you need to insert the values p_fname then p_lname.
You must either have first name then last name in both or last
name then first name in both, not one way in one and the other
way in the other.
The idea is that when you execute the procedure you specify the
values of the input parameter variable, then use those input
parameter variables to insert the values into the table. You
should not be specifying any specific values anywhere in your
procedure. In other words don't insert 'HEATHER', instead
insert fname, and so on.
You should only have one insert statement. Each time the
procedure is executed, a different set of values will be
provided, and the same insert statement will be used.
Additional suggestions:
Although it is not required, since IN is the default, it is
generally considered to be a good programming practice to use IN
with your input parameters. It just makes the code easier to
read and understand. As you write other code, you will learn to
use OUT for output parameters and IN OUT for parameters that are
both input and output parameters.
It is generally recommended to store all data in upper case,
that is capital letters, so that it is easier to index and
search and avoid duplicates and so on. In order to ensure that
your data is input in upper case, it is a good idea to use the
UPPER function.
Different programmers and companies have different standards
that they use for capitalization, indentation, spacing,
alignment, and so forth to make their code uniform and easier to
read. You may want to look at some various styles and see what
you like or ask what your instructor recommends.
You should add some sort of exception handling section. For
example, if someone attempts to insert a value for standing that
isn't acceptable, then the procedure will fail due to the
constraints and the student will not be added. You probably
want to display some sort of message to the user. You might
also want to display a message if the input is successful.
When you attempt to compile your program and you receive a
message that says "Warning: Procedure created with compilation
errors." or some such thing, then from the SQL> prompt, type
SHOW ERRORS and it will list the error message number, a brief
description of the problem, and the line of code that the
problem occurred on. You can then type LIST and it will list
the code with line numbers, so that you can tell what line
number the error message is referring to.
In the following example, I have fixed the things that were
wrong, formatted it the way I usually do, and added minimal
exception handling and messages. There is a lot more that you
could do. I have also demonstrated how the program can be
tested and the results of proper input and improper input. In
the example below, two students are added correctly, then an
attempt to add another fails because the standing is not valid
and violates a check constraint, because graduate is not
acceptable. After each execution of the procedure, I have
queried the table, so that you can see what was added and what
was not.
SQL> CREATE OR REPLACE PROCEDURE AddStudent
2 (p_fname IN VARCHAR2,
3 p_lname IN VARCHAR2,
4 p_major IN VARCHAR2,
5 p_standing IN VARCHAR2,
6 p_gpa IN NUMBER)
7 IS
8 v_stuid NUMBER;
9 BEGIN
10 SELECT student_seq.NEXTVAL
11 INTO v_stuid
12 FROM DUAL;
13
14 INSERT INTO student
15 (stuid,
16 fname,
17 lname,
18 major,
19 standing,
20 gpa)
21 VALUES (v_stuid,
22 UPPER (p_fname),
23 UPPER (p_lname),
24 UPPER (p_major),
25 UPPER (p_standing),
26 p_gpa);
27
28 COMMIT;
29 DBMS_OUTPUT.PUT_LINE ('Student added');
30 EXCEPTION
31 WHEN OTHERS THEN
32 DBMS_OUTPUT.PUT_LINE ('An error occurred');
33 END AddStudent;
34 /
Procedure created.
SQL> COLUMN fname FORMAT A15
SQL> COLUMN lname FORMAT A15
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
no rows selected
SQL> SET SERVEROUTPUT ON
SQL> EXEC AddStudent ('HEATHER', 'SMITH', 'CIS', 'JUNIOR', 3.8)
Student added
PL/SQL procedure successfully completed.
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
STUID FNAME LNAME MAJOR
STANDING GPA
1 HEATHER SMITH CIS
JUNIOR 3.8
SQL> EXEC AddStudent ('Dave', 'Elliott', 'CIS', 'junior', 3.65)
Student added
PL/SQL procedure successfully completed.
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
STUID FNAME LNAME MAJOR
STANDING GPA
1 HEATHER SMITH CIS
JUNIOR 3.8
2 DAVE ELLIOTT CIS
JUNIOR 3.65
SQL> EXEC AddStudent ('KARL', 'WEBSTER', 'CIS', 'GRADUATE', 3.2)
An error occurred
PL/SQL procedure successfully completed.
SQL> SELECT stuid, fname, lname, major, standing, gpa
2 FROM student
3 /
STUID FNAME LNAME MAJOR
STANDING GPA
1 HEATHER SMITH CIS
JUNIOR 3.8
2 DAVE ELLIOTT CIS
JUNIOR 3.65
SQL>
I am going home now. Sometimes I get a chance to respond to my
e-mail daily and sometimes I may not get to it for a week. It
is better if you post your questions on one of the forums where
you may get more rapid responses from many people. I have
provided links to some forums that I browse below. If you have
internet access, you should be able to just click on them. Some
may require you to register, but they are all free.
The following is a link to the Oracle Technology Network forums,
hosted by Oracle Corporation, where I recommend the SQL and
PL/SQL discussions.
http://forums.oracle.com/forums/homepage.jsp
The following is a link to the PL/SQL forums of the REVEALNET
site, where noted author Steven Feuerstein is one of the SYSOPS,
where, for you, I recommend the "Beginner PL/SQL Developer
Questions" discussions.
http://PIPETALK.REVEALNET.COM/~PLSQL/LOGIN
The following is a link to another forum, where I recommend the
RDBMS, SQL, PL/SQL discussions.
http://www.orafans.com/cgi-bin/orafans/ubb/Ultimate.cgi?
action=intro
I would still like to know where you got my e-mail address, what
class you are taking, who your instructor is, and so forth.
Please do let me know.
Good luck,
Barbara
-----Original Message-----
From: bseo.ga [SMTP:[email protected]]
Sent: Wednesday, December 19, 2001 12:19 AM
To: Boehmer, Barbara A.
Subject: Re: PL/SQL
Importance: High
what is wrong with the compilation errors?
CREATE or REPLACE PROCEDURE AddStudent(
p_stuID number,
p_lname varchar2(30),
p_fname varchar2(20),
p_major varchar2(5) check(major IN
('ACCT','ECT','EET','BIS','BSIT','CIS','TCOM')),
P_standing varchar2(10) check(standing IN
('FRESHMAN','SOPHOMORE','JUNIOR','SENIOR')),
P_gpa number(3,2) IS
BEGIN
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'SMITH', 'HEATHER', 'CIS', 'JUNIOR', 3.8,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'ELLIOTT', 'DAVE', 'CIS', 'JUNIOR', 3.65,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'WEBSTER', 'KARL', 'CIS', 'SENIOR', 3.2,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'COX', 'STACEY', 'CIS', 'SENIOR', 2.7, 1);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'HOWARD', 'BRIAN', 'CIS', 'JUNIOR', 3.18,
1);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'DENNIS', 'KELLY', 'CIS', 'SENIOR', 4.0,
1);
COMMIT;
END;
SQL> /
Warning: Procedure created with compilation errors.
----- Original Message -----
From: Boehmer, Barbara A. <mailto:[email protected]>
To: 'bseo.ga' <mailto:[email protected]>
Sent: Tuesday, December 18, 2001 5:17 PM
Subject: RE: PL/SQL
I am not sure what part of it you don't understand.
The first section that you included is a script that you need to
copy and run, in order to create the sequences, tables, and data
that you will need to complete your assignment. You will need
to edit an empty .sql file, copy the script into the file, save
the file, then start the file. For example:
SQL> EDIT test
Type or copy the script and save the file.
SQL> START test
You should see various messages as the items are created. Then
you can use the following commands to see the tables and
sequences that you have created:
SQL> SELECT table_name FROM user_tables;
SQL> SELECT sequence_name FROM user_sequences;
To show the structure of an individual table, for example the
course table:
SQL> DESC course
To show the data in an individual table, like the course table:
SQL> SELECT * FROM course;
In the second section that you have provided, your instructor is
asking you to create three different procedures to do three
different things. To create a procedure, you edit a .sql file,
type the code to create the procedure, save the file, then start
the file. I usually make the .sql file name the same as the
procedure name. So, for example, in number 1, you are asked to
create a procedure named AddStudent, so you would:
SQL> EDIT AddStudent
Type your code.
Save the file.
SQL> START AddStudent
You should receive a message that says:
Procedure created.
Then, to execute your procedure:
SQL> EXEC AddStudent (put your parameter values here)
The basic syntax for creating a pl/sql procedure is:
CREATE OR REPLACE PROCEDURE procedure_name
(put your parameters here)
AS
put your variable declarations here;
BEGIN
put your code that you want to execute here,
like insert statements and update statements;
END procedure_name;
So, if you are trying to create a procedure to add a new student
(which means inserting a row into the student table), you will
need to accept the values (parameters) that you are going to
insert, then insert them:
CREATE OR REPLACE PROCEDURE AddStudent
(p_first .....
p_last .....
p_major .....
p_standing .....
p_GPA .....)
AS
BEGIN
INSERT INTO student .....;
END AddStudent;
I have just given you a starting format and deliberately left
out a lot, because you will learn more by doing it yourself. I
hope that makes things a little clearer.
I would like to know a little more about the class you are
taking. Please let me know where you are going to school, who
your instructor is, what is the name of the class you are
taking, and what book are you using. Also, please let me know
where you got my e-mail address (from one of the forums?)
Good luck,
Barbara
-----Original Message-----
From: bseo.ga [mailto:[email protected]]
Sent: Tuesday, December 18, 2001 5:57 PM
To: [email protected]
Subject: PL/SQL
Importance: High
I don't understand reading the following instructions from my
professor and the books. help would be apppreciated.
-------------create the sequence numbers needed to generate
primary key values
create sequence room_seq increment by 1;
create sequence faculty_seq increment by 1;
create sequence student_seq increment by 1;
create sequence section_seq increment by 1;
create sequence enrollment_seq increment by 1;
create sequence room_section_seq increment by 1;
create table course(
courseNo varchar2(10),
name varchar2(30),
credits number,
constraint course_pk primary key (courseNo));
insert into course (courseNo, name, credits) values
('CIS405','ADVANCED DATABASE', 5);
insert into course (courseNo, name, credits) values
('CIS349','INTRO TO DATABASE', 5);
COMMIT;
create table room(
roomID number,
bldg char(1) check (bldg IN ('A','B')),
roomNo varchar2(10),
maxCapacity number,
style varchar2(15) check(style IN
('LECTURE','LECTURE/LAB','LAB','OFFICE')),
constraint room_pk primary key (roomID));
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151A', 50, 'LAB');
insert into room (roomID, bldg, roomNo, maxCapacity, style)
values (room_seq.nextval, 'B', '151B', 50, 'LAB');
commit;
create table faculty(
facultyID number,
lname varchar2(30) not null,
fname varchar2(20) not null,
dept varchar2(5),
officeID number,
phone varchar2(15),
email varchar2(75),
rank char(4) check(rank IN
('INST','ASOC','ASST','FULL','SENR')),
constraint faculty_pk primary key (facultyID),
constraint faculty_fk foreign key (officeID) references room
(roomID));
insert into faculty(facultyID, lname, fname, dept, officeID,
phone, email, rank) values
(faculty_seq.nextval, 'CANNON', 'AMY', 'CIS',
6, '77052149003252', '[email protected]','FULL'
<mailto:'[email protected]','FULL'>);
commit;
create table equipment(
equipmentID varchar2(30),
roomID number,
type varchar2(20) check(type IN('OVERHEAD PROJECTOR','PORTABLE
PROJECTOR','LAPTOP CONNECTION','DESKTOP COMPUTER','INTERNET
CONNECTION')),
constraint equipment_pk primary key (equipmentID),
constraint equipment_fk foreign key (roomID) references room
(roomID));
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('111',
5, 'DESKTOP COMPUTER');
INSERT INTO EQUIPMENT (EQUIPMENTID, ROOMID, TYPE) VALUES ('222',
5, 'OVERHEAD PROJECTOR');
commit;
create table student(
stuID number,
lname varchar2(30),
fname varchar2(20),
street varchar2(100),
city varchar2(60),
state char(2),
zip varchar2(9),
major varchar2(5) check(major IN
('ACCT','ECT','EET','BIS','BSIT','CIS','TCOM')),
standing varchar2(10) check(standing IN
('FRESHMAN','SOPHOMORE','JUNIOR','SENIOR')),
gpa number(3,2),
advisor number,
constraint student_pk primary key (stuID),
constraint student_FK foreign key (advisor) references faculty
(facultyID));
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'SMITH', 'HEATHER', 'CIS', 'JUNIOR', 3.8,
2);
INSERT INTO STUDENT (STUID, LNAME, FNAME, MAJOR, STANDING, GPA,
ADVISOR) VALUES
(STUDENT_SEQ.NEXTVAL, 'ELLIOTT', 'DAVE', 'CIS', 'JUNIOR', 3.65,
2);
commit;
create table section(
sectionID number,
sectionNo char(1),
courseNo varchar2(10),
facultyID number,
term char(4),
curSize number,
maxSize number,
constraint section_pk primary key (sectionID),
constraint section_course_fk foreign key (courseNo) references
course(courseNo),
constraint section_faculty_fk foreign key (facultyID)
references faculty(facultyID));
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'T', 'CIS405', 1, '1001', 17, 30);
INSERT INTO SECTION (SECTIONID, SECTIONNO, COURSENO, FACULTYID,
TERM, CURSIZE, MAXSIZE)
VALUES (SECTION_SEQ.NEXTVAL, 'G', 'CIS405', 2, '1001', 24, 30);
commit;
create table enrollment(
stuSectionID number,
stuID number,
sectionID number,
grade char(1) check(grade IN('A','B','C','D','F','I','W')),
constraint enrollment_pk primary key (stuSectionID),
constraint enrollment_stu_fk foreign key (stuID) references
student(stuID),
constraint enrollment_section_fk foreign key (sectionID)
references section(sectionID));
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 1);
INSERT INTO ENROLLMENT (STUSECTIONID, STUID, SECTIONID) VALUES
(ENROLLMENT_SEQ.NEXTVAL, 3, 8);
commit;
create table room_section(
roomSectionID number,
sectionID number,
roomID number,
day char(3) check(day IN
('MON','TUE','WED','THU','FRI','SAT','SUN')),
hour date,
term char(4),
constraint room_section_pk primary key (roomSectionID),
constraint room_section_section_fk foreign key (sectionID)
references section(sectionID),
constraint room_section_room_fk foreign key (roomID)
references room(roomID));
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('9:30
AM', 'HH:MI AM'), '1001');
INSERT INTO ROOM_SECTION (ROOMSECTIONID, SECTIONID, ROOMID, DAY,
HOUR, TERM)
VALUES (ROOM_SECTION_SEQ.NEXTVAL, 1, 3, 'MON', TO_DATE('10:30
AM', 'HH:MI AM'), '1001');
commit;
The lab notes from my professor said
1. your system will often need to create a new student. Write
PL/SQL code for an object named AddStudent that will take values
for first and last name, major, standing and GPA and add a new
record in the Student table. Since advisors aren't assigned at
registration time, we'll add their advisor at a later date.
Don't worry about the student's address. Be sure to use the
sequence number for the student's ID.
2. Write a procedure that will retrieve an existing record in
Enrollment usiing the student and section Ids and set the grade
to a specified value. (use update instead of insert)
3. Write another procedure that will assign a given student a
given advisor. -
Don't understand "offline or missing files"
I was using Lightroom and set a preference so that I could try to edit one of the photos in Photoshop elements.
Now, when I open the folder that had that photo in it, ALL of the photos say offline or missing, even though the photo appears. If I right click on one of the subfolders and click "find missing files" it seems to find them in Photoshop Elements. When I choose Photoshop Elements, the folder just disappears! If I open Photoshop Elements, there is nothing there. I just don't understand!! I find Lightroom 3 very frustrating.Once imported to LR, you must not move or rename any image-file except from within LR. What you see in the LR library is the cached preview. If you have moved or renamed a file directly with the explorer, then the file shows as missing. With "find missing files" you can re-link the file from its new position to the LR library.
What happens if you select "show in explorer"? Are the files there? With correct name? -
I Don't Understand Color Management
I'm a relative newbe, but have been digging into Photoshop CS4 pretty intensely the last several months. All in all I think I'm getting a pretty good handle on it and can pretty much do what I want to do ........ EXCEPT Color Management. No matter how much I read on the subject I still don't have even the basic concepts.
First off, my tools include a Nikon D90 -> HP Touchsmart Notebook (uncalibrated lcd screen) ->Photoshop CS4 -> a just purchased Epson r2880.
Let's ignore the Nikon for now and just concentrate on PS and the r2880.
My color settings in PS are Adobe RGB98 and CYMK US Web coated (SWOP) v2
Assuming this is OK must I assign a profile to each individual photo, or is that taken care of automatically? What is the purpose of the profile?
Then when I get ready to print and Color Management is being taken care of by Adobe, do I turn off all color correction in the r2880 or do I use the ICM (which I have downloaded from the web)?
I experiment with the different settings and one seems to work better sometimes than the other, but not consistently.
Any help (to include recommended documentation or literature) would be greatly appreciated.Thanks very much. Some of this is starting to make sense in a (It Depends on ....) sorta way.
Going to your analogy, isn't it true when the photographer takes a picture in RAW
there is no profile, but this is done when opening the image in PS?
I do use adjustment layers pretty effectively.
It's when I'm ready to print that it gets confusing. Is the most likely scenario
to let Adobe of the Printer (with it's premium ICC) handle color management,
or let Adobe handle color management?
And if I let Adobe handle color management, is the most likely scenario to have the printer set
to "No color management" or "ICC color management"?
I suspect the answer is "Experiment and see", but thus far that has produced
a mixed bag of tricks.
A few questions:
1. Are you doing photography?
Yes, that's all I'm doing at the Present.
2. When you print to the Epson - are you trying to proof for a commercial print job, or are you just printing for yourself?
No, this is strictly a hobby.
3. Are you supplying files to a commercial printer?
Again, no.
4. Have you calibrated and profiled your monitor?
No, but that's probably going to be one of next projects. My monitor (and tablet) is actually a small 10" lcd on a HP Touchsmart notebook
Any suggestions as to a low cost solution?
Date: Mon, 14 Sep 2009 16:17:25 -0600
From: [email protected]
To: [email protected]
Subject: I Don't Understand Color Management
My basic understanding of CM is Source and Destination.
Take a picture, for example. The photographer captures the image in RAW and converts this to an RGB image.
The image is passed on to the designer. If the photographer did their job properly, the image is already tagged with a profile. You can tell this in Photoshop. Beside RGB, there will be *, #, or nothing.
is very, very bad. This means the image is untagged. Nobody knows what it should look like.
means the image is tagged with a profile different from your RGB working space. This is fine.
Nothing means the image is tagged with a profile that matches your RGB working space in Color Settings.
At any rate, the RGB image is usually referred to as a source image. It can be repurposed to a variety of destination color spaces.
The next task is proofing the destination. This can be done on the monitor, if it is properly calibrated and profiled. You can also print a proof (that can get a little more complicated, if you have questions please ask).
For example, you want to know what the image will look like when the commercial printer runs it on his press. Best case scenario is you obtain a CMYK profile from the printer. This is your Proof Color (i.e. Photoshop View: Proof Colors).
Usually it is best to leave source RGB as source RGB. You can place the RGB image in InDesign, and let InDesign convert to CMYK on output. In other words, there is no reason to convert to CMYK in Photoshop (you should however utilize View: Proof Colors)
When you convert in Photoshop you damage the image and there is no going back. This means saving a copy. But by avoiding conversions to CMYK in Photoshop, no need to save copies.
Also by leaving images source RGB, they can be converted to whatever destination you like when you output from InDesign. You could output for a Sheetfed press printing on cover weight coated stock, you could output for a Web press printing on newsprint, or you could even output sRGB for web design. Having source color saves a lot of time, and you're not chasing a bunch of different Photoshop conversions.
Also note: if you make color adjustments in Photoshop, try to use adjustment layers as these are non-destructive.
A few questions:
1. Are you doing photography?
2. When you print to the Epson - are you trying to proof for a commercial print job, or are you just printing for yourself?
3. Are you supplying files to a commercial printer?
4. Have you calibrated and profiled your monitor?
> -
Excuse me, but I don't understand How I can contact a ADOBE expert to ask about my problem? I don't found a mail, or chat or other else...is it possible? Only help for Customer is on the Forum?!?!?
Someone can help me...thanks in advance.
fWhile it is possible you have a faulty unit I'd agree that the menu system took a step backwards with the itunes store centric take 2.0+ software. I think I'm in the minority here though. Apart from the 2.0+ top level interface being butt ugly and confusing to navigate, it simply isn't as responsive as 1.0/1.1 and I think most of this is to do with displaying a combined sync/stream menu. if you sync stuff try setting 'show only synced items' in the AppleTv device tabs in iTunes and see if it makes the issue go away - easy to revert back.
Huge libraries (number of files not actual size of the files) can also be problematic given AppleTV's modest hardware specs but that's more exception than the rule.
With streaming/syncing combined I also think any network deficiencies show up more than they used to. -
Please explain, i don't understand
Hi guys, could someone plese explain to me what the error below means, or is pointing towards. I don't understand it at all... Particularly the 'Another exception has been detected while we were handling last error' part...
Another exception has been detected while we were handling last error.
Dumping information about last error:
ERROR REPORT FILE = (N/A)
PC = 0x1b67a9e6
SIGNAL = -1073741819
FUNCTION NAME = (N/A)
OFFSET = 0xFFFFFFFF
LIBRARY NAME = (N/A)
Please check ERROR REPORT FILE for further information, if there is any.
Good bye.
Thanks,
Andy.hang on there - before you go posting the whole program - you can find where that error message is printed out, right? It should be in a catch block or something - just post the code that might have thrown the exception that was caught.
You might do a bit of debugging on your own (with System.out.println, for instance) as an inability to determine where the problem is in your code can indicate that you don't understand it well enough to even take suggestions we give you - and if you don't understand it, we certainly don't care to.
Good Luck
Lee -
I can't don't understand code in netbean and it's about Jframe.
i use netbean to design 2 jframe with some buttons on both frame.
frame1 is login form, frame2 is mainform. i want to show loginform then click the button1 to show 2nd jframe.
then i click exit on 2nd jframe and it come back to loginform(frame1).
i do alot of search on the google and here. i know the basic to show a jframe using
setVisible or .show() .hide(), etc..
the problem is what is my jframe variable name in netbean?
i know i can create an jframe object
such as: JFrame frame1 = new JFrame(); etc.. (it's ok if the syntax is wrong for now).
When i use netbean, i drag the Gui components to the Jframe. The jframe is generated by netbean automatically.
When the main program runs, it calls main() method, follow by :
public void run() {
new LoginForm().setVisible(true);
new LoginForm().setVisible <--- setVisible(true) means show the form.
and is new LoginForm() create an object from LoginForm class.
public LoginForm() {
initComponents();
When it create a new object, it runs default constructor and calls iniComponoents and finally show the jframe.
my question is when you create object, you usually declare variable and use variable to hold reference to the object.
that's why i don't understand how it works here.
it only create news object, bu no variable to holding it. how do i control this Jframe to show and hide without a reference variable????????????
Edited by: roadorange on Feb 29, 2008 10:08 PMroadorange wrote:
Encephalopathic . thank your reply so much. your reply is fast. i love it and love this forum.. LOLyou're welcome
i tried hand-written code, and it looks just fine when design few buttons, labels and textfields.
The adjustment of buttons(labels) are not that good on the frame.
However, when you use IDE, you can drag the button on any spot you like in the jframe.... and in the process not learn how Swing works, and lose flexibility and power. Sorry to sound conceited, but I'll match any of your netbeans-created GUI's with one of my own, and mine will likely be better -- and I'm not all that good at this just yet.
Much luck. -
I don't understand what's happening with my Music. All the songs that I purchased, that were previously on my phone, now show up with a Cloud next to them, but I can't play them. If I touch the Cloud, it turns into a red square, acts like it's downloading (which I can see happening in iTunes), but never downloads. The Cloud just stays there.
I've sync'd my phone, I've turned it to "show all music" in Settings, I've drag and dropped the songs/albums onto my phone again. I feel like I've tried everything I've seen recommended, but nothing works.
I've purchased a lot of music from iTunes. It should be there. What's going on?
P.S. Same thing happening with my purchased books. Ugh.Once you successfully add you iTunes library to iTunes Match, you go to Settings>iTunes & App Store on your iOS device and turn on iTunes Match. Your iTunes Match library will then appear on your iOS device.
-
when we try to buy a new app or update our existing apps, my account settings wont allow me to enter ANY of my credit cards. It says to contact apple/itunes/support, but when I do, I don't understand how to navigate it to find an answer. Help!
Click here and ask the iTunes Store staff for assistance.
(108048) -
Which Mac Pro? More cores=slower speeds? And most of us know the speed matters or FPU for music and I don't understand the faster is for the least amount of procs. And while I get the whole rendering thing and why it makes sense.
The above is what the bar says. It's been a while and wondered, maybe Apple changed the format for forums. Then got this nice big blank canvas to air my concerns. Went to school for Computer Science, BSEE, even worked at Analog Devices in Newton Massachusetts, where they make something for apple.
The bottom line is fast CPU = more FPU = more headroom and still can't figure out why the more cores= the slower it gets unless it's to get us in to a 6 core then come out with faster cores down the road or a newer Mac that uses the GPU. Also. Few. I'm the guy who said a few years ago Mac has an FCP that looks like iMovie on Steroids. Having said that I called the campus one day to ask them something and while I used to work for Apple, I think she thought I still did as she asked me, "HOW ARE THE 32 CORES/1DYE COMING ALONG? Not wanting to embarrass her I said fine, fine and then hung up. Makes the most sense as I never quite got the 2,6,12 cores when for years everything from memory to CPU's have been, in sets of 2 to the 2nd power. 2,4,8,16,32,64,120,256,512, 1024, 2048,4196,8192, 72,768. Wow. W-O-W and will be using whatever I get with Apollo Quad.
Peace to all and hope someone can point us in THE RIGHT DIRECTION. THANK YOUThanks for your reply via email/msg. He wrote:
If you are interested in the actual design data for the Xeon processor, go to the Intel site and the actual CPU part numbers are:
Xeon 4 core - E5.1620v2
Xeon 6 core - E5.1650v2
Xeon 8 core - E5.1680v2
Xeon 12 core - E5.2697v2
I read that the CPU is easy to swap out but am sure something goes wrong at a certain point - even if solderedon they make material to absorb the solder, making your work area VERY clean.
My Question now is this, get an 8 core, then replace with 2 3.7 QUAD CHIPS, what would happen?
I also noticed that the 8 core Mac Pro is 3.0 when in fact they do have a 3.4 8 core chip, so 2 =16? Or if correct, wouldn't you be able to replace a QUAD CHIP WITH THAT? I;M SURE THEY ARE UO TO SOMETHING AS 1) WE HAVE SEEN NO AUDIO FPU OR PERHAPS I SHOULD CHECK OUT PC MAKERS WINDOWS machines for Sisoft Sandra "B-E-N-C-H-M-A-R-K-S" -
SOMETHINGS UP AND AM SURE WE'LL ALL BE PLEASED, AS the mac pro was announced Last year, barely made the December mark, then pushed to January, then February and now April.
Would rather wait and have it done correct than released to early only to have it benchmarked in audio and found to be slower in a few areas- - - the logical part of my brain is wondering what else I would have to swap out as I am sure it would run, and fine for a while, then, poof....
PEACE===AM SURE APPLE WILL BLOW US AWAY - they have to figure out how to increase the power for 150 watts or make the GPU work which in regard to FPU, I thought was NVIDIA? -
Generate Report From Template (Excel).vi & don't understand to fill the cells
I am trying to use the Generate Report From Template (Excel).vi to build my own template, and then fill it with some of my datas. I am trying to replace the "temperature" or "pressure" labels by others, and then fill them with my vi. I don't understand how labview find the location of the labels in the excel template.
Thanks in advance
Attachments:
Excel_Template.xls 33 KB
Generate_Report_From_Template_(Excel).vi 120 KBYou can get the answer to your question by reading the following thread:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=137&HOID=50650000000500000019360100&HTHREAD=000079385000079477000079498000079542000079632&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0
The short answer:
To setup or modify the Named Labels in your Excel template, use Excel's Insert -> Name -> Define command. A name can be defined as a single cell or a block of cells.
Michael Munroe
Certified LabVIEW Developer
www.abcdefirm.com
Michael Munroe, ABCDEF
Certified LabVIEW Developer, MCP
Find and fix bad VI Properties with Property Inspector -
I just updated my Macbook (2010) to Yosemite, and it's become very slow. After searching through this community, I downloaded and run EtreCheck, but don't understand what the report means. Please could you help me with what I should do to improve my computer's speed, aside from upgrading my RAM? Thank you so much.
The report:
Problem description:
my macbook is running very slowly after upgrading to yosemite.
EtreCheck version: 2.0.11 (98)
Report generated 12 November 2014 1:44:14 pm SGT
Hardware Information: ℹ️
MacBook (13-inch, Mid 2010) (Verified)
MacBook - model: MacBook7,1
1 2.4 GHz Intel Core 2 Duo CPU: 2-core
2 GB RAM Upgradeable
BANK 0/DIMM0
1 GB DDR3 1067 MHz ok
BANK 1/DIMM0
1 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
NVIDIA GeForce 320M - VRAM: 256 MB
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 3:23:3
Disk Information: ℹ️
TOSHIBA MK2555GSXF disk0 : (250.06 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / [Startup]: 249.20 GB (25.42 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
HL-DT-ST DVDRW GS23N
USB Information: ℹ️
Western Digital My Passport 0748 1 TB
S.M.A.R.T. Status: Verified
EFI (disk1s1) <not mounted> : 210 MB
tansey (disk1s2) /Volumes/tansey : 999.83 GB (951.98 GB free)
Apple Inc. Built-in iSight
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Configuration files: ℹ️
/etc/hosts - Count: 15
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/System/Library/Extensions
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMControl (3.0.13) Support
[not loaded] com.NovatelWireless.driver.NovatelWirelessUSBCDCECMData (3.0.13) Support
[not loaded] com.ZTE.driver.ZTEUSBCDCACMData (1.3.8) Support
[not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.8) Support
[not loaded] com.novamedia.driver.IceraUSB_MSD_Bypass (1.3.0) Support
[not loaded] com.novatelwireless.driver.3G (3.0.13) Support
[not loaded] com.novatelwireless.driver.DisableAutoInstall (3.0.13) Support
[not loaded] com.option.driver.Option72 (2.15.0) Support
[not loaded] com.option.driver.OptionHS (3.26.0) Support
[not loaded] com.option.driver.OptionMSD (1.21.0) Support
[not loaded] com.option.driver.OptionQC (1.11.0) Support
[not loaded] com.rim.driver.BlackBerryUSBDriverInt (0.0.39) Support
[not loaded] com.rim.driver.BlackBerryUSBDriverVSP (0.0.45) Support
[not loaded] com.vodafone.driver (3.0.9) Support
[not loaded] com.zte.driver.cdc_ecm_qmi (1.0.1) Support
[not loaded] com.zte.driver.cdc_usb_bus (1.0.1) Support
[not loaded] de.novamedia.driver.NMSamsung (0.0.2) Support
[not loaded] de.novamedia.driver.NMSmartplugSCSIDevice (1.0.1) Support
[not loaded] de.novamedia.oem.vodafone.vtp.huawei.cdc (0.0.2) Support
/System/Library/Extensions/NMHuaweiPhonesVTPCDC_106.kext/Contents/PlugIns
[not loaded] de.novamedia.driver.NMUSBCDCACMControl (3.2.12) Support
/System/Library/Extensions/NMSamsungDriver_106.kext/Contents/PlugIns
[not loaded] de.novamedia.driver.NMUSBCDCACMData (3.2.12) Support
/System/Library/Extensions/NovatelWireless3G.kext/Contents/PlugIns
[not loaded] com.novatelwireless.driver.3GData (3.0.13) Support
/System/Library/Extensions/Vodafone.kext/Contents/PlugIns
[not loaded] com.vodafone.driver.Data (3.0.9) Support
Startup Items: ℹ️
HP IO: Path: /Library/StartupItems/HP IO
HWNetMgr: Path: /Library/StartupItems/HWNetMgr
HWPortDetect: Path: /Library/StartupItems/HWPortDetect
Startup items are obsolete and will not work in future versions of OS X
Problem System Launch Agents: ℹ️
[failed] com.apple.accountsd.plist
[failed] com.apple.AirPlayUIAgent.plist
[failed] com.apple.bird.plist
[failed] com.apple.CallHistoryPluginHelper.plist
[failed] com.apple.CallHistorySyncHelper.plist
[failed] com.apple.cloudd.plist
[failed] com.apple.coreservices.appleid.authentication.plist
[failed] com.apple.coreservices.uiagent.plist
[failed] com.apple.EscrowSecurityAlert.plist
[failed] com.apple.icloud.fmfd.plist
[failed] com.apple.iconservices.iconservicesagent.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.pluginkit.pkd.plist
[failed] com.apple.recentsd.plist
[failed] com.apple.security.cloudkeychainproxy.plist
[failed] com.apple.spindump_agent.plist
[failed] com.apple.telephonyutilities.callservicesd.plist
Problem System Launch Daemons: ℹ️
[failed] com.apple.awdd.plist
[failed] com.apple.cache_delete.plist
[failed] com.apple.coresymbolicationd.plist
[failed] com.apple.ctkd.plist
[failed] com.apple.diagnosticd.plist
[failed] com.apple.iconservices.iconservicesagent.plist
[failed] com.apple.iconservices.iconservicesd.plist
[failed] com.apple.ifdreader.plist
[failed] com.apple.installd.plist
[failed] com.apple.MobileFileIntegrity.plist
[failed] com.apple.nehelper.plist
[failed] com.apple.nsurlsessiond.plist
[failed] com.apple.sandboxd.plist
[failed] com.apple.softwareupdated.plist
[failed] com.apple.spindump.plist
[failed] com.apple.sysmond.plist
[failed] com.apple.tccd.system.plist
[failed] com.apple.wdhelper.plist
[failed] com.apple.xpc.smd.plist
[running] de.novamedia.nmnetmgrd.plist Support
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[failed] com.adobe.CS5ServiceManager.plist Support
[loaded] com.google.keystone.agent.plist Support
[running] de.novamedia.VodafoneDeviceObserver.plist Support
[invalid?] SwapperUFi.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
[invalid?] com.adobe.SwitchBoard.plist Support
[loaded] com.cloudpath.maccmd.plist Support
[loaded] com.google.keystone.daemon.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
[invalid?] PPPMonitord.plist Support
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist Support
[invalid?] com.akamai.client.plist Support
[invalid?] com.divx.agent.postinstall.plist Support
[failed] com.facebook.videochat.[redacted].plist Support
User Login Items: ℹ️
Dropbox Application (/Applications/Dropbox.app)
SurplusMeterAgent UNKNOWN (missing value)
Google Chrome ApplicationHidden (/Applications/Google Chrome.app)
HP Scheduler Application (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)
Internet Plug-ins: ℹ️
o1dbrowserplugin: Version: 5.38.6.0 - SDK 10.8 Support
Google Earth Web Plug-in: Version: 7.1 Support
Default Browser: Version: 600 - SDK 10.10
OfficeLiveBrowserPlugin: Version: 12.2.6 Support
OVSHelper: Version: 1.1 Support
AdobePDFViewerNPAPI: Version: 10.1.12 Support
FlashPlayer-10.6: Version: 15.0.0.152 - SDK 10.6 Support
Silverlight: Version: 5.1.10411.0 - SDK 10.6 Support
Flash Player: Version: 15.0.0.152 - SDK 10.6 Mismatch! Adobe recommends 15.0.0.223
iPhotoPhotocast: Version: 7.0
googletalkbrowserplugin: Version: 5.38.6.0 - SDK 10.8 Support
QuickTime Plugin: Version: 7.7.3
AdobePDFViewer: Version: 10.1.12 Support
SharePointBrowserPlugin: Version: 14.0.0 Support
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
User Internet Plug-ins: ℹ️
OctoshapeWeb: Version: 1.0 Support
Safari Extensions: ℹ️
DivX Plus Web Player HTML5 <video>
3rd Party Preference Panes: ℹ️
DivX Support
Flash Player Support
Time Machine: ℹ️
Skip System Files: NO
Auto backup: NO - Auto backup turned off
Volumes being backed up:
Macintosh HD: Disk size: 249.20 GB Disk used: 223.78 GB
Destinations:
Time Machine Backups [Local]
Total size: 0 B
Total number of backups: 0
Oldest backup: -
Last backup: -
Size of backup disk: Too small
Backup size 0 B < (Disk used 223.78 GB X 3)
Top Processes by CPU: ℹ️
15% WindowServer
1% Dropbox
0% AppleSpell
0% Skype
0% imagent
Top Processes by Memory: ℹ️
60 MB Google Chrome
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Virtual Memory Information: ℹ️
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16.91 GB Page-ins
633 MB Page-outsI advise to reply to the one you want to reply to.
You have had good information here. I will not repeat that here.
I would like to add:
you have incompatible software: start in SafeMode, read Woodmeister and see if it is free of issues.
Akamai is crap software needed or not, Huawei the same.
It is very possible that the keygenerator you used for generating a key for some softwares has infected your mac.
The non-regular software with the false key(s) are not compatible probably or generate malware. Luckily you can not update them automatically because the keygenerator blocked the software for contacting the developer... I propose to consider getting rid of those softwares by really good uninstalling.
You have a beautiful mac, don't degenerate it with crapped software. There are alternatives for expensive software, for example Adobe Photoshop has a free alternative (with a less beautiful interface) in GIMP. And so on.
Lex -
I am new to Final Cut Express and don't understand why I am unable to drag transitions into Canvas? Something wrong in my setup? It's not the overlays they are "on" so can anyone advise me please, by the way the "L" doesn't appear in the bottom left hand corner either? and by the way how can I get rid of that irritating Blue badge saying "AutoFill your contact details" all mine are in "address book" already!
You can't drag a transition into the canvas. If you're dragginmg a transition from the effects tab you drag it between the edit point of two clips in the timeline.
Make sure show edit overlays is turned on in the Canvas view popup. -
Why is this an error??? I don't understand why it is... Help Please
Hi,
Ok, I'll preface this by saying there's a lotta code pasted in here but it really quite an easy question, I just need to post all the code so you understand where what came from.
Now.............the question I'm trying to do is to create an applet that has 2 buttons -- each button when clicked opens an application (one is a simple calculator, the other a Mortgage calculation app). When you click one of the buttons (calc or mortgage), that app opens infront of the 2 button menu so its in "focus". The button on the 2 button menu then switches to a "hide app X" button (ie: "Mortgage", changes to "Hide Mortgage"). Thus if you click the hide button, the app that was opened is hidden, and then that "hide" button switches back to the original "app X" button. Pretty simple.
Now, I have from my text book an example that does exactly this, with the simple calculator already in it, and with another app (a traffic light thing) where the Mortgage should be in my final product. I also already have the Mortgage applet I need to insert from another book example in place of that Traffic Light portion.
Now, common sense would dictate that I should be able to just copy my code for the Mortgage applet into the example that has the 2 button menu structure, and overwrite the code I want to get rid of (the traffic light) with the mortgage code & rename the menu buttons. Right?? A simple switch of one thing for another... but therein lies my problem.
I copied all the Mortgage code in correctly over the traffic lights, switched the button names, tried to compile it but I get one error....
Exercise12_17.java:52: cannot resolve symbol
symbol : method pack ()
location: class MortgageApplet
mortgageAppletFrame.pack();I don't understand why..... mortgageAppletFrame.pack(); was a simple rewrite from lightsFrame.pack(); like every other line...... it should work. I've gone over it for 2 days......... Anyone know why it comes up as an error???
Below, in order going down is (1)my code with the 1 error I can't solve, (2)the original menu example I tried to edit, and (3)the Mortgage app code...........
Does anyone know what my error is?? Help or a hint would be greatly appreciated........ Thanks.
My erroring app.......
// Exercise12_17.java: Create multiple windows
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;
public class Exercise12_17 extends JFrame implements ActionListener {
// Declare and create a frame: an instance of MenuDemo
MenuDemo calcFrame = new MenuDemo();
// Declare and create a frame: an instance of RadioButtonDemo
MortgageApplet mortgageAppletFrame = new MortgageApplet();
// Declare two buttons for displaying frames
private JButton jbtCalc;
private JButton jbtMortgage;
public static void main(String[] args) {
Exercise12_17 frame = new Exercise12_17();
frame.setSize( 400, 70 );
frame.setTitle("Exercise 11.8: Multiple Windows Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
public Exercise12_17() {
// Add buttons to the main frame
getContentPane().setLayout(new FlowLayout());
getContentPane().add(jbtCalc = new JButton("Simple Calculator"));
getContentPane().add(jbtMortgage = new JButton("Mortgage"));
// Register the main frame as listener for the buttons
jbtCalc.addActionListener(this);
jbtMortgage.addActionListener(this);
public void actionPerformed(ActionEvent e) {
String arg = e.getActionCommand();
if (e.getSource() instanceof JButton)
if ("Simple Calculator".equals(arg)) {
//show the MenuDemo frame
jbtCalc.setText("Hide Simple Calculator");
calcFrame.pack();
calcFrame.setVisible(true);
else if ("Hide Simple Calculator".equals(arg)) {
calcFrame.setVisible(false);
jbtCalc.setText("Simple Calculator");
else if ("Mortgage".equals(arg)) {
//show the CheckboxGroup frame
mortgageAppletFrame.pack();
jbtMortgage.setText("Hide Mortgage");
mortgageAppletFrame.setVisible(true);
else if ("Hide Mortgage".equals(arg)) {
mortgageAppletFrame.setVisible(false);
jbtMortgage.setText("Mortgage");
class MortgageApplet extends JApplet
implements ActionListener {
// Declare and create text fields for interest rate
// year, loan amount, monthly payment, and total payment
private JTextField jtfAnnualInterestRate = new JTextField();
private JTextField jtfNumOfYears = new JTextField();
private JTextField jtfLoanAmount = new JTextField();
private JTextField jtfMonthlyPayment = new JTextField();
private JTextField jtfTotalPayment = new JTextField();
// Declare and create a Compute Mortgage button
private JButton jbtComputeMortgage = new JButton("Compute Mortgage");
/** Initialize user interface */
public void init() {
// Set properties on the text fields
jtfMonthlyPayment.setEditable(false);
jtfTotalPayment.setEditable(false);
// Right align text fields
jtfAnnualInterestRate.setHorizontalAlignment(JTextField.RIGHT);
jtfNumOfYears.setHorizontalAlignment(JTextField.RIGHT);
jtfLoanAmount.setHorizontalAlignment(JTextField.RIGHT);
jtfMonthlyPayment.setHorizontalAlignment(JTextField.RIGHT);
jtfTotalPayment.setHorizontalAlignment(JTextField.RIGHT);
// Panel p1 to hold labels and text fields
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(5, 2));
p1.add(new Label("Annual Interest Rate"));
p1.add(jtfAnnualInterestRate);
p1.add(new Label("Number of Years"));
p1.add(jtfNumOfYears);
p1.add(new Label("Loan Amount"));
p1.add(jtfLoanAmount);
p1.add(new Label("Monthly Payment"));
p1.add(jtfMonthlyPayment);
p1.add(new Label("Total Payment"));
p1.add(jtfTotalPayment);
p1.setBorder(new
TitledBorder("Enter interest rate, year and loan amount"));
// Panel p2 to hold the button
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout(FlowLayout.RIGHT));
p2.add(jbtComputeMortgage);
// Add the components to the applet
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listener
jbtComputeMortgage.addActionListener(this);
/** Handle the "Compute Mortgage" button */
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jbtComputeMortgage) {
// Get values from text fields
double interest = (Double.valueOf(
jtfAnnualInterestRate.getText())).doubleValue();
int year =
(Integer.valueOf(jtfNumOfYears.getText())).intValue();
double loan =
(Double.valueOf(jtfLoanAmount.getText())).doubleValue();
// Create a mortgage object
Mortgage m = new Mortgage(interest, year, loan);
// Display monthly payment and total payment
jtfMonthlyPayment.setText(String.valueOf(m.monthlyPayment()));
jtfTotalPayment.setText(String.valueOf(m.totalPayment()));
class MenuDemo extends JFrame implements ActionListener {
// Text fields for Number 1, Number 2, and Result
private JTextField jtfNum1, jtfNum2, jtfResult;
// Buttons "Add", "Subtract", "Multiply" and "Divide"
private JButton jbtAdd, jbtSub, jbtMul, jbtDiv;
// Menu items "Add", "Subtract", "Multiply","Divide" and "Close"
private JMenuItem jmiAdd, jmiSub, jmiMul, jmiDiv, jmiClose;
/** Main method */
public static void main(String[] args) {
MenuDemo frame = new MenuDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
/** Default constructor */
public MenuDemo() {
setTitle("Menu Demo");
// Create menu bar
JMenuBar jmb = new JMenuBar();
// Set menu bar to the frame
setJMenuBar(jmb);
// Add menu "Operation" to menu bar
JMenu operationMenu = new JMenu("Operation");
operationMenu.setMnemonic('O');
jmb.add(operationMenu);
// Add menu "Exit" in menu bar
JMenu exitMenu = new JMenu("Exit");
exitMenu.setMnemonic('E');
jmb.add(exitMenu);
// Add menu items with mnemonics to menu "Operation"
operationMenu.add(jmiAdd= new JMenuItem("Add", 'A'));
operationMenu.add(jmiSub = new JMenuItem("Subtract", 'S'));
operationMenu.add(jmiMul = new JMenuItem("Multiply", 'M'));
operationMenu.add(jmiDiv = new JMenuItem("Divide", 'D'));
exitMenu.add(jmiClose = new JMenuItem("Close", 'C'));
// Set keyboard accelerators
jmiAdd.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_A, ActionEvent.CTRL_MASK));
jmiSub.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));
jmiMul.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_M, ActionEvent.CTRL_MASK));
jmiDiv.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_D, ActionEvent.CTRL_MASK));
// Panel p1 to hold text fields and labels
JPanel p1 = new JPanel();
p1.setLayout(new FlowLayout());
p1.add(new JLabel("Number 1"));
p1.add(jtfNum1 = new JTextField(3));
p1.add(new JLabel("Number 2"));
p1.add(jtfNum2 = new JTextField(3));
p1.add(new JLabel("Result"));
p1.add(jtfResult = new JTextField(4));
jtfResult.setEditable(false);
// Panel p2 to hold buttons
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout());
p2.add(jbtAdd = new JButton("Add"));
p2.add(jbtSub = new JButton("Subtract"));
p2.add(jbtMul = new JButton("Multiply"));
p2.add(jbtDiv = new JButton("Divide"));
// Add panels to the frame
getContentPane().setLayout(new BorderLayout());
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listeners
jbtAdd.addActionListener(this);
jbtSub.addActionListener(this);
jbtMul.addActionListener(this);
jbtDiv.addActionListener(this);
jmiAdd.addActionListener(this);
jmiSub.addActionListener(this);
jmiMul.addActionListener(this);
jmiDiv.addActionListener(this);
jmiClose.addActionListener(this);
/** Handle ActionEvent from buttons and menu items */
public void actionPerformed(ActionEvent e) {
String actionCommand = e.getActionCommand();
// Handle button events
if (e.getSource() instanceof JButton) {
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if (e.getSource() instanceof JMenuItem) {
// Handle menu item events
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if ("Close".equals(actionCommand))
System.exit(0);
/** Calculate and show the result in jtfResult */
private void calculate(char operator) {
// Obtain Number 1 and Number 2
int num1 = (Integer.parseInt(jtfNum1.getText().trim()));
int num2 = (Integer.parseInt(jtfNum2.getText().trim()));
int result = 0;
// Perform selected operation
switch (operator) {
case '+': result = num1 + num2;
break;
case '-': result = num1 - num2;
break;
case '*': result = num1 * num2;
break;
case '/': result = num1 / num2;
// Set result in jtfResult
jtfResult.setText(String.valueOf(result));
Original 2 button menu example....
// Exercise11_8.java: Create multiple windows
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Exercise11_8 extends JFrame implements ActionListener {
// Declare and create a frame: an instance of MenuDemo
MenuDemo calcFrame = new MenuDemo();
// Declare and create a frame: an instance of RadioButtonDemo
RadioButtonDemo lightsFrame = new RadioButtonDemo();
// Declare two buttons for displaying frames
private JButton jbtCalc;
private JButton jbtLights;
public static void main(String[] args) {
Exercise11_8 frame = new Exercise11_8();
frame.setSize( 400, 70 );
frame.setTitle("Exercise 11.8: Multiple Windows Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
public Exercise11_8() {
// Add buttons to the main frame
getContentPane().setLayout(new FlowLayout());
getContentPane().add(jbtCalc = new JButton("Simple Calculator"));
getContentPane().add(jbtLights = new JButton("Traffic Lights"));
// Register the main frame as listener for the buttons
jbtCalc.addActionListener(this);
jbtLights.addActionListener(this);
public void actionPerformed(ActionEvent e) {
String arg = e.getActionCommand();
if (e.getSource() instanceof JButton)
if ("Simple Calculator".equals(arg)) {
//show the MenuDemo frame
jbtCalc.setText("Hide Simple Calculator");
calcFrame.pack();
calcFrame.setVisible(true);
else if ("Hide Simple Calculator".equals(arg)) {
calcFrame.setVisible(false);
jbtCalc.setText("Simple Calculator");
else if ("Traffic Lights".equals(arg)) {
//show the CheckboxGroup frame
lightsFrame.pack();
jbtLights.setText("Hide Traffic Lights");
lightsFrame.setVisible(true);
else if ("Hide Traffic Lights".equals(arg)) {
lightsFrame.setVisible(false);
jbtLights.setText("Traffic Lights");
class RadioButtonDemo extends JFrame
implements ItemListener {
// Declare radio buttons
private JRadioButton jrbRed, jrbYellow, jrbGreen;
// Declare a radio button group
private ButtonGroup btg = new ButtonGroup();
// Declare a traffic light display panel
private Light light;
/** Main method */
public static void main(String[] args) {
RadioButtonDemo frame = new RadioButtonDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(250, 170);
frame.setVisible(true);
/** Default constructor */
public RadioButtonDemo() {
setTitle("RadioButton Demo");
// Add traffic light panel to panel p1
JPanel p1 = new JPanel();
p1.setSize(200, 200);
p1.setLayout(new FlowLayout(FlowLayout.CENTER));
light = new Light();
light.setSize(40, 90);
p1.add(light);
// Put the radio button in Panel p2
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout());
p2.add(jrbRed = new JRadioButton("Red", true));
p2.add(jrbYellow = new JRadioButton("Yellow", false));
p2.add(jrbGreen = new JRadioButton("Green", false));
// Set keyboard mnemonics
jrbRed.setMnemonic('R');
jrbYellow.setMnemonic('Y');
jrbGreen.setMnemonic('G');
// Group radio buttons
btg.add(jrbRed);
btg.add(jrbYellow);
btg.add(jrbGreen);
// Place p1 and p2 in the frame
getContentPane().setLayout(new BorderLayout());
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listeners for check boxes
jrbRed.addItemListener(this);
jrbYellow.addItemListener(this);
jrbGreen.addItemListener(this);
/** Handle checkbox events */
public void itemStateChanged(ItemEvent e) {
if (jrbRed.isSelected())
light.turnOnRed(); // Set red light
if (jrbYellow.isSelected())
light.turnOnYellow(); // Set yellow light
if (jrbGreen.isSelected())
light.turnOnGreen(); // Set green light
// Three traffic lights shown in a panel
class Light extends JPanel {
private boolean red;
private boolean yellow;
private boolean green;
/** Default constructor */
public Light() {
turnOnGreen();
/** Set red light on */
public void turnOnRed() {
red = true;
yellow = false;
green = false;
repaint();
/** Set yellow light on */
public void turnOnYellow() {
red = false;
yellow = true;
green = false;
repaint();
/** Set green light on */
public void turnOnGreen() {
red = false;
yellow = false;
green = true;
repaint();
/** Display lights */
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (red) {
g.setColor(Color.red);
g.fillOval(10, 10, 20, 20);
g.setColor(Color.black);
g.drawOval(10, 35, 20, 20);
g.drawOval(10, 60, 20, 20);
g.drawRect(5, 5, 30, 80);
else if (yellow) {
g.setColor(Color.yellow);
g.fillOval(10, 35, 20, 20);
g.setColor(Color.black);
g.drawRect(5, 5, 30, 80);
g.drawOval(10, 10, 20, 20);
g.drawOval(10, 60, 20, 20);
else if (green) {
g.setColor(Color.green);
g.fillOval(10, 60, 20, 20);
g.setColor(Color.black);
g.drawRect(5, 5, 30, 80);
g.drawOval(10, 10, 20, 20);
g.drawOval(10, 35, 20, 20);
else {
g.setColor(Color.black);
g.drawRect(5, 5, 30, 80);
g.drawOval(10, 10, 20, 20);
g.drawOval(10, 35, 20, 20);
g.drawOval(10, 60, 20, 20);
/** Set preferred size */
public Dimension getPreferredSize() {
return new Dimension(40, 90);
class MenuDemo extends JFrame implements ActionListener {
// Text fields for Number 1, Number 2, and Result
private JTextField jtfNum1, jtfNum2, jtfResult;
// Buttons "Add", "Subtract", "Multiply" and "Divide"
private JButton jbtAdd, jbtSub, jbtMul, jbtDiv;
// Menu items "Add", "Subtract", "Multiply","Divide" and "Close"
private JMenuItem jmiAdd, jmiSub, jmiMul, jmiDiv, jmiClose;
/** Main method */
public static void main(String[] args) {
MenuDemo frame = new MenuDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
/** Default constructor */
public MenuDemo() {
setTitle("Menu Demo");
// Create menu bar
JMenuBar jmb = new JMenuBar();
// Set menu bar to the frame
setJMenuBar(jmb);
// Add menu "Operation" to menu bar
JMenu operationMenu = new JMenu("Operation");
operationMenu.setMnemonic('O');
jmb.add(operationMenu);
// Add menu "Exit" in menu bar
JMenu exitMenu = new JMenu("Exit");
exitMenu.setMnemonic('E');
jmb.add(exitMenu);
// Add menu items with mnemonics to menu "Operation"
operationMenu.add(jmiAdd= new JMenuItem("Add", 'A'));
operationMenu.add(jmiSub = new JMenuItem("Subtract", 'S'));
operationMenu.add(jmiMul = new JMenuItem("Multiply", 'M'));
operationMenu.add(jmiDiv = new JMenuItem("Divide", 'D'));
exitMenu.add(jmiClose = new JMenuItem("Close", 'C'));
// Set keyboard accelerators
jmiAdd.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_A, ActionEvent.CTRL_MASK));
jmiSub.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));
jmiMul.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_M, ActionEvent.CTRL_MASK));
jmiDiv.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_D, ActionEvent.CTRL_MASK));
// Panel p1 to hold text fields and labels
JPanel p1 = new JPanel();
p1.setLayout(new FlowLayout());
p1.add(new JLabel("Number 1"));
p1.add(jtfNum1 = new JTextField(3));
p1.add(new JLabel("Number 2"));
p1.add(jtfNum2 = new JTextField(3));
p1.add(new JLabel("Result"));
p1.add(jtfResult = new JTextField(4));
jtfResult.setEditable(false);
// Panel p2 to hold buttons
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout());
p2.add(jbtAdd = new JButton("Add"));
p2.add(jbtSub = new JButton("Subtract"));
p2.add(jbtMul = new JButton("Multiply"));
p2.add(jbtDiv = new JButton("Divide"));
// Add panels to the frame
getContentPane().setLayout(new BorderLayout());
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listeners
jbtAdd.addActionListener(this);
jbtSub.addActionListener(this);
jbtMul.addActionListener(this);
jbtDiv.addActionListener(this);
jmiAdd.addActionListener(this);
jmiSub.addActionListener(this);
jmiMul.addActionListener(this);
jmiDiv.addActionListener(this);
jmiClose.addActionListener(this);
/** Handle ActionEvent from buttons and menu items */
public void actionPerformed(ActionEvent e) {
String actionCommand = e.getActionCommand();
// Handle button events
if (e.getSource() instanceof JButton) {
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if (e.getSource() instanceof JMenuItem) {
// Handle menu item events
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if ("Close".equals(actionCommand))
System.exit(0);
/** Calculate and show the result in jtfResult */
private void calculate(char operator) {
// Obtain Number 1 and Number 2
int num1 = (Integer.parseInt(jtfNum1.getText().trim()));
int num2 = (Integer.parseInt(jtfNum2.getText().trim()));
int result = 0;
// Perform selected operation
switch (operator) {
case '+': result = num1 + num2;
break;
case '-': result = num1 - num2;
break;
case '*': result = num1 * num2;
break;
case '/': result = num1 / num2;
// Set result in jtfResult
jtfResult.setText(String.valueOf(result));
Mortgage applet code....
// MortgageApplet.java: Applet for computing mortgage payments
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;
public class MortgageApplet extends JApplet
implements ActionListener {
// Declare and create text fields for interest rate
// year, loan amount, monthly payment, and total payment
private JTextField jtfAnnualInterestRate = new JTextField();
private JTextField jtfNumOfYears = new JTextField();
private JTextField jtfLoanAmount = new JTextField();
private JTextField jtfMonthlyPayment = new JTextField();
private JTextField jtfTotalPayment = new JTextField();
// Declare and create a Compute Mortgage button
private JButton jbtComputeMortgage = new JButton("Compute Mortgage");
/** Initialize user interface */
public void init() {
// Set properties on the text fields
jtfMonthlyPayment.setEditable(false);
jtfTotalPayment.setEditable(false);
// Right align text fields
jtfAnnualInterestRate.setHorizontalAlignment(JTextField.RIGHT);
jtfNumOfYears.setHorizontalAlignment(JTextField.RIGHT);
jtfLoanAmount.setHorizontalAlignment(JTextField.RIGHT);
jtfMonthlyPayment.setHorizontalAlignment(JTextField.RIGHT);
jtfTotalPayment.setHorizontalAlignment(JTextField.RIGHT);
// Panel p1 to hold labels and text fields
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(5, 2));
p1.add(new Label("Annual Interest Rate"));
p1.add(jtfAnnualInterestRate);
p1.add(new Label("Number of Years"));
p1.add(jtfNumOfYears);
p1.add(new Label("Loan Amount"));
p1.add(jtfLoanAmount);
p1.add(new Label("Monthly Payment"));
p1.add(jtfMonthlyPayment);
p1.add(new Label("Total Payment"));
p1.add(jtfTotalPayment);
p1.setBorder(new
TitledBorder("Enter interest rate, year and loan amount"));
// Panel p2 to hold the button
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout(FlowLayout.RIGHT));
p2.add(jbtComputeMortgage);
// Add the components to the applet
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listener
jbtComputeMortgage.addActionListener(this);
/** Handle the "Compute Mortgage" button */
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jbtComputeMortgage) {
// Get values from text fields
double interest = (Double.valueOf(
jtfAnnualInterestRate.getText())).doubleValue();
int year =
(Integer.valueOf(jtfNumOfYears.getText())).intValue();
double loan =
(Double.valueOf(jtfLoanAmount.getText())).doubleValue();
// Create a mortgage object
Mortgage m = new Mortgage(interest, year, loan);
// Display monthly payment and total payment
jtfMonthlyPayment.setText(String.valueOf(m.monthlyPayment()));
jtfTotalPayment.setText(String.valueOf(m.totalPayment()));
}Does it have to be an applet?
If you want the same behaviour as in the code with traffic lights, change
class MortgageApplet extends JApplet implements ActionListener {
to
class MortgageApplet extends JFrame implements ActionListener {
and change
public void init() {
to
public MortgageApplet() {
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