Importing Java Packages

Hi all,
I've just started a course at uni learning Java. On the Linux machines there it's easy importing a package - type import (name of package) then run the command javac with the classpath of the package.
However, back at home this can't be done. I've tried pacing the package in the same directory as the java file, but still won't compile, stating that the package cannot be found. Any ideas?

Ah, maybe I misunderstood, so I'll give you the answer to my other interprtation of the question.
You need to set up your classpath on your computer, If your using windows you can go to:
control Panel > system > Advanced > Environment Variables
Than add:
Variable Name: CLASSPATH
VariableValue: .;c:java_SDK\;c:\java\
obviously change your directory names according to where you compile your java files, the . at the start means "look in this directory"

Similar Messages

Import Java package in JSP

I hope this is an appropriate forum for this query.
I want to be able to access a user-created Java package in JSP.
I have this code:
<%@page import="TPClass.*" %>
<%
xxx = TPClass
session.setAttribute("response",xxx.GetTPResponse());
%>
The error display points to TPClass in the import statement with the message "TPClass not found".
TPClass files are in the same location as the other project files.
I have creatyed and compiled the TPClass package.
Is there more I need to do?
Brenton

I think you are very new to java....
anyway
<%@page import="class name with full qualified package name"%>
like
<%@page import="com.x1.x2.TPClass"%>
<%
TPClass cls =new TPClass();
//then do whatever you want...
%>
hope u understand now.....

How to import java package in form 10g

hello
i have make a java package but its not looking so far possible to include it in java import list, how i can import it in form 10 g

hi,
if classpath does not work you can try to add your jar file at this registry key :
HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\KEY_DevSuiteHome\FORMS_BUILDER_CLASSPATH
Engin.

Java package and c++ header files

What is the difference between importing java package and including header files in c++?

I do not know .. have been away from C/C++ for a long time...
As much as I remember you can only import one header file each time... also when you import a header file you can just call methods from the header file automatically ...
However I could be very wrong on this .. really lost touch from C/C++ ...
regards,
Sim085

How can i import java.sql package for midlet development

I am trying to write a midlet app using Wireless Toolkit 2.5.2. I would like to connect my application to JavaDB in embedded mode. But when I write "import java.sql.*;", I get an error "package java.sql does not exist
". I would like to know how can i include this package. please help.

FBL wrote:
Sorry to jump in, but isn't there limited jdbc using unconventional methods?
[http://developers.sun.com/mobility/configurations/articles/cdc/jdbc/|http://developers.sun.com/mobility/configurations/articles/cdc/jdbc/]
If so, I feel this may better answer the OPs question.
-TresAbove article refers to CDC - it is useless in CLDC midlets

USage of import java.util.* & using another package

When we use import java.util.*; from where does JAVA take the class that are related to util, when I did search for "util" in my machine, I got about 50 results for folders named util and also some where in a folder called "java" when I opened it it did not have the classes, that I was expecting. So I am not clear where does it get the class files from. This is not only for this but for any import commands like import java.io.*;
When we get another package or source code which was written in java and want to use it in our code where do we have keep the files ? eg. i have the java code that i m writing in c:\java then do I put all the downloaded related files in that folder and then run the code ? or i keep a folder inside java folder and then import them into my code ?
please do advice.
Thanks in advance.

When we use import java.util.*; from where does JAVA
take the class that are related to util,It means when you use a classname in your code, and that classname is neither in the same package as the class you're writing, nor imported specifically by classname, that it will search for it.
Where it searches is every folder called util whose parent folder is called java which in turn is at the root level of one of the classpath elements. That is, if classpath contains "A" and "B", and you refer to a class called "Foo", then it will look for "A/java/util/Foo.class" and "B/java/util/Foo.class".
search for "util" in my machine, I got about 50
results for folders named util and also some where in
a folder called "java" when I opened it it did not
have the classes, that I was expecting. So I am not
clear where does it get the class files from. This is
not only for this but for any import commands like
import java.io.*; All the java.* and javax.* and whatever else it part of the core API is in rt.jar, which lives inside the Java distribution. Classpath elements can be directories or jar files or zip files.

SAP Ides ECC 6.0 Install: Import ABAP - Package SAPDODS Error - ORA-00903

Experts,
Good Morning!
I'm trying to install SAP IDES ECC 6.0 version on a Windows 2008 R2 Server with Oracle 11g DB (11.2).
System Info: 16GM RAM & 600GB Hdd. Prereqs passed.
I'm getting the following error during the Import ABAP phase (16 of 29) in the sapinst log:
"An error occurred while processing option Enhancement Package 6 for SAP ERP 6.0 > SAP Application Server ABAP > Oracle > Central System > Central System( Last error reported by the step: Program 'Migration Monitor' exits with error code 103. "
Here's the dump of import_monitor.java.log
java version "1.4.2_32"
Java(TM) 2 Runtime Environment, Standard Edition (build 4.1.012)
SAP Java Server VM (build 4.1.012 1.6-b03, Oct 21 2011 14:18:45 - 41_REL - optU - windows amd64 - 6 - bas2:161688 (mixed mode))
Import Monitor jobs: running 1, waiting 1, completed 141, failed 0, total 143.
Loading of 'SAPDODS' import package: ERROR
Import Monitor jobs: running 0, waiting 1, completed 141, failed 1, total 143.
Here's the dump of import_monitor.log:
INFO: 2014-07-05 13:42:53
Data codepage 4103 is determined using TOC file 'C:\Target\Export1\DATA\D010TAB.TOC' for package 'D010TAB'.
TRACE: 2014-07-05 13:42:53 com.sap.inst.migmon.LoadTask run
Loading of 'SAPDODS' import package is started.
TRACE: 2014-07-05 13:42:53 com.sap.inst.migmon.LoadTask processPackage
Loading of 'SAPDODS' import package into database:
C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe -i SAPDODS.cmd -dbcodepage 4103 -l SAPDODS.log -stop_on_error
ERROR: 2014-07-05 13:42:54 com.sap.inst.migmon.LoadTask run
Loading of 'SAPDODS' import package is interrupted with R3load error.
Process 'C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe -i SAPDODS.cmd -dbcodepage 4103 -l SAPDODS.log -stop_on_error' exited with return code 2.
For mode details see 'SAPDODS.log' file.
Standard error output:
sapparam: sapargv(argc, argv) has not been called!
sapparam(1c): No Profile used.
sapparam: SAPSYSTEMNAME neither in Profile nor in Commandline
WARNING: 2014-07-05 13:43:21
Cannot start import of packages with views because not all import packages with tables are loaded successfully.
WARNING: 2014-07-05 13:43:21
1 error(s) during processing of packages.
INFO: 2014-07-05 13:43:21
Import Monitor is stopped.
Here's the log of SAPDODS...
C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe: START OF LOG: 20140705134253
C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe: sccsid @(#) $Id: //bas/720_REL/src/R3ld/R3load/R3ldmain.c#13 $ SAP
C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe: version R7.20/V1.4 [UNICODE]
Compiled Aug 16 2011 02:26:36
patchinfo (patches.h): (0.098) DB6: correction for R3load PL 91 on HP-UX and SOLARIS (note 1609719)
process id 1488
C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe -i SAPDODS.cmd -dbcodepage 4103 -l SAPDODS.log -stop_on_error
DbSl Trace: ORA-1403 when accessing table SAPUSER
(DB) INFO: connected to DB
(DB) INFO: DbSlControl(DBSL_CMD_NLS_CHARACTERSET_GET): UTF16
(SQL) INFO: Searching for SQL file SQLFiles.LST
(SQL) INFO: SQLFiles.LST not found
(SQL) INFO: Searching for SQL file C:\Target\Export1\DB/SQLFiles.LST
(SQL) INFO: C:\Target\Export1\DB/SQLFiles.LST not found
(SQL) INFO: Searching for SQL file DODS.SQL
(SQL) INFO: DODS.SQL not found
(SQL) INFO: Searching for SQL file C:\Target\Export1\DB/ORA/DODS.SQL
(SQL) INFO: found C:\Target\Export1\DB/ORA/DODS.SQL
(SQL) INFO: Trying to open C:\Target\Export1\DB/ORA/DODS.SQL
(SQL) INFO: C:\Target\Export1\DB/ORA/DODS.SQL opened
(DB) ERROR: DDL statement failed
(DROP TABLE "/BI0/APERS_BOD00")
DbSlExecute: rc = 103
(SQL error 942)
error message returned by DbSl:
ORA-00942: table or view does not exist
(IMP) INFO: a failed DROP attempt is not necessarily a problem
DbSl Trace: Error 903 in exec_immediate() from oci_execute_stmt(), orpc=0
DbSl Trace: ORA-00903 occurred at SQL stmt (parse error offset=15)
(DB) ERROR: DDL statement failed
( CREATE TABLE [/BI0/APERS_BOD00] ( [TCTUSERNM] nvarchar(000012) NOT NULL , [TCTOBJVERS] nvarchar(000001) NOT NULL , [TCTSYSID] nvarchar(000010) NOT NULL , [TCTQUACT] nvarchar(000001) NOT NULL , [TCTOBJNM] nvarchar(000040) NOT NULL , [TCTTLOGO] nvarchar(000004) NOT NULL , [RECORDMODE] nvarchar(000001) NOT NULL , [TCTTIMSTMP] nvarchar(000014) NOT NULL ) WITH ( DATA_COMPRESSION = PAGE ) )
DbSlExecute: rc = 99
(SQL error 903)
error message returned by DbSl:
ORA-00903: invalid table name
(DB) INFO: disconnected from DB
C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe: job finished with 1 error(s)
C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\R3load.exe: END OF LOG: 20140705134254
FYI - A retry does not help. Also tried to search for the error on scn, google but haven't been able to find the right solution.
Can you help?
Regards,
Cobain.

Divyanshu - sorry to ask but can you explain why i need to update r3load and r3trans to resolve this error? Just want to understand why I'm doing a correction so I can learn from the same.
Also, can you clarify the file update process:
For R3load:
a) the r3load used by the command is dated 8/16/2011 (location:C:\usr\sap\AVV\SYS\exe\uc\NTAMD64\...)
b) the r3load i have in my db folder is dated 10/23/2011 (location:C:\Final\Installer\BS7i2011_Installation_Master_\DATA_UNITS\BS2011_IM_WINDOWS_X86_64\ORA\UC\...)
Do i replace (a) with (b)?
For R3trans:
How do I update this file?
- Cobain.

JAVA PACKAGES and JSP

i Have two problems one is i am designing a website which consists of a form. I am trying to write the Connectiviy and all other insert statements in seperate java packages and include them in JSP files.
i Have two java packages one is DBUtil(having two java files both dealing with connectovity) and another one is StudentUtIl which has java files that open the connections with database connection and insert data into DB., I am having a big Problem here. How can i call the function in the other java package in the files in this java package. i have openDB()and Close() in the other Db and i want to call these functions in JAVA classes in the other package. How to include a package. Both these packages are in the same File system mounted on a Local directory

Thank you for the reply. I am giving the code i have given the full class name . and now it is giving the following error :
Cannot reference a non-static method connectDB() in a static context.
I am also giving the code. Please do help me on this. i am a beginner in java.
import java.sql.*;
import java.util.*;
import DButil.*;
public class StudentManager {
/** Creates a new instance of StudentManager */
public StudentManager() {
Connection conn = null;
Statement cs = null;
public Vector getStudent(){
try{
dbutil.connectDB();
String Query = "Select St_Record, St_L_Name, St_F_Name, St_Major, St_Email_Address, St_SSN, Date, St_Company, St_Designation";
cs = conn.createStatement();
java.sql.ResultSet rs = cs.executeQuery(Query);
Vector Studentvector = new Vector();
while(rs.next()){
Studentinfo Student = new Studentinfo();
Student.setSt_Record(rs.getInt("St_Record"));
Student.setSt_L_Name(rs.getString("St_L_Name"));
Student.setSt_F_Name(rs.getString("St_F_Name"));
Student.setSt_Major(rs.getString("St_Major"));
Student.setSt_Email_Address(rs.getString("St_Email_Address"));
Student.setSt_Company(rs.getString("St_Company"));
Student.setSt_Designation(rs.getString("St_Designation"));
Student.setDate(rs.getInt("Date"));
Studentvector.add(Student);
if( cs != null)
cs.close();
if( conn != null && !conn.isClosed())
conn.close();
return Studentvector;
}catch(Exception ignore){
return null;
}finally {
dbutil.closeDB();
import java.sql.*;
import java.util.*;
public class dbutil {
/** Creates a new instance of dbutil */
public dbutil() {
Connection conn;
public void connectDB(){
conn = ConnectionManager.getConnection();
public void closeDB(){
try{
if(conn != null && !conn.isClosed())
conn.close();
}catch(Exception excep){
The main error is occuring at the following lines connectDB() and closeDB() in the class student manager. The class dbutil is in an another package.with an another file called connectionManager which establishes the connection with DB. The dbutil has the openconnection and close connection methods. I have not yet written the insert statements in StudentManager. PLease do Help me

Error during installation of SAP SOL MAN 4.0 on SuSE (Import Java Dump)

Hello everyone
I' m trying to install SAP Solution Manager 4.0 on SuSE 9.1 (I know that it is not SAP recommended but I verified all the kernel & package prerequisites needed).
I' m running a Central Instance Installation with Oracle which is currently at step 19 (Import java dump) where it crashes with the following error (as it is record in jload.java.log):
Aug 22, 2006 1:28:32 PM com.sap.inst.jload.Jload main
INFO: Jload -sec SSM,jdbc/pool/SSM,/usr/sap/SSM/SYS/global/security/data/SecStore.properties,/usr/sap/SSM/SYS/global/security/data/SecStore.key -dataDir /home/tp/smb/synfs/sapinst/ssm-java/JAVA_EXPORT/JDMP -job /tmp/sapinst_instdir/SOLMAN/SYSTEM/ORA/CENTRAL/AS/IMPORT.XML -log jload.log
Aug 22, 2006 1:28:43 PM com.sap.inst.jload.db.DBConnection connectViaSecureStore
INFO: connected to SSM on jdbc/pool/SSM
Aug 22, 2006 1:28:45 PM com.sap.inst.jload.JobStatus readStatus
INFO: trying to read status file /tmp/sapinst_instdir/SOLMAN/SYSTEM/ORA/CENTRAL/AS/IMPORT.sta
Aug 22, 2006 1:28:46 PM com.sap.inst.jload.JobStatus readStatus
INFO: commencing restart
Aug 22, 2006 1:28:48 PM com.sap.inst.jload.Jload dbImport
INFO: trying to delete from table J2EE_CONFIGENTRY
Aug 22, 2006 1:28:52 PM com.sap.inst.jload.Jload dbImport
INFO: J2EE_CONFIGENTRY deleted
Aug 22, 2006 1:32:10 PM com.sap.inst.jload.Jload logStackTrace
SEVERE: java.io.IOException: Not enough files, skip(533947162) failed
 at com.sap.inst.jload.io.SplitInputStream.skip(SplitInputStream.java:368)
 at com.sap.inst.jload.io.SplitInputStream.close(SplitInputStream.java:193)
 at com.sap.inst.jload.io.ChoppedInputStream.close(ChoppedInputStream.java:61)
 at java.io.BufferedInputStream.close(BufferedInputStream.java:398)
 at java.io.FilterInputStream.close(FilterInputStream.java:159)
 at com.sap.inst.jload.io.DataFile.closeDataInputStream(DataFile.java:169)
 at com.sap.inst.jload.db.DBTable.load(DBTable.java:301)
 at com.sap.inst.jload.Jload.dbImport(Jload.java:323)
 at com.sap.inst.jload.Jload.executeJob(Jload.java:397)
 at com.sap.inst.jload.Jload.main(Jload.java:621)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at com.sap.engine.offline.OfflineToolStart.main(OfflineToolStart.java:81)
Aug 22, 2006 1:32:11 PM com.sap.inst.jload.db.DBConnection disconnect
INFO: disconnected
I have searched the forums for this problem and I didn't find something about the specific crash (not enough files...) although I see that it is something common for the VM to crash at that step for various other reasons...
I use jdk-1.4.2_12 but I have also tried jdk-1.4.2_09 and jdk-1.4.2_08 (as recommended in some articles) with no success.
My hardware platform is a compaq 6500 server with 1GB RAM, 52GB disk space, 1GB swap.
Currently (after db creation & ABAP loading) the remaining free disk space is 6GB (enough I think to complete the installation). The java and oracle processes seem to fit with no problem in the current resource limits (memory + swap).
I don't think that it is a resource limit problem (user limits - file descriptors & processes - have been defined as needed). I have read that it might be a JDBC Oracle driver problem but I have already patched Oracle to 10.2.0.2...
I would very much appreciate any of your ideas, as my installation is stuck there...

Hello Matthias. At first, thanks for your answer.
I don't think that what you mention is the problem cause the kernel parameters are set up accordingly. Here is my sysctl.conf:
kernel.shmall = 2097152
kernel.shmmax = 2313682943
kernel.shmmni = 4096
kernel.sem = 250 32000 100 1024
kernel.msgmni = 1024
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 1048576
net.core.rmem_max = 1048576
net.core.wmem_default = 262144
net.core.wmem_max = 262144
As for the currently open files this is what I get when I
cat /proc/sys/fs/file-nr
2550 0 65536
And as for current user limits for file descriptors
ulimit -n
65536

As for oracle I don't get an error ORA-1118 that would declare that something happens with oracle file limits. Anyway in my control files there is
MAXDATAFILES = db_files = 254 while the database has only 19 files for the corresponding SAP tablespaces
Anyway I keep trying... Any other ideas?

How to run the imported java class in form

Help!!!!!
Pls help me to run the imported java class in forms.
Package is created in forms while imported one class called
singlexml.class and that package has one procedure and one
function.
I just wanted to run that class.I mean the new package.
Thanks
Anil

Hi,
It is because the converter works on byte code and it only supports a subset of the Java language (see the JC specifications). It is kind of like compiling you code on Java 6 and trying to run it on Java 5. The JCDK outlines the required compiler version.
Cheers,
Shane

How to call a C program in java PACKAGE

am trying to call a method implemented in C from java.
I followed the instructions of sun.java.com tutorial for the simple example of HelloWorld. It works fine.
BUT, when I try to do the same in a package, I run into a lot of trouble. I did the following :
1. Created HelloWorld.java in a package GUI/ and compiled it
package GUI;
import java.io.*;
class HelloWorld {
public native void displayHelloWorld();
static {
System.loadLibrary("hello");
// Call native method through this from other classes
public void callinghello() {
callip();
public static void main(String[] args) {
new HelloWorld().displayHelloWorld();
2. javah -jni HelloWorld -- to create HelloWorld.h
3. wrote HelloWorldImp.c
4. g++ -Wall -shared -I/usr/lib/j2sdk1.3/include -I/usr/lib/j2sdk1.3/include/linux HelloWorldImp.c -o libhello.so
-- compiled and created .so file
5. Set the package directory in Classpath, path and LD_LIBRARY_PATH
6. When it is run java GUI.HelloWorld
I get this error
Exception in thread "main" java.lang.NoClassDefFoundError: OrionGUI/HelloWorld
Can anyone help me. If you have any links to how to call native methods in package, please let me know. Thanks.

GOT IT !!!
I had to change the name of the method in .h file generated by javah command. On doing
javac -d ../../classes HelloWorld.java
go to the ../../classes directory (where you have the class file) and do
javah HelloWorld
I got a HelloWorld.h file in which I had
JNIEXPORT void JNICALL Java_HelloWorld_display(JNIEnv *, jobject);
I added the package name too:
JNIEXPORT void JNICALL Java_GUI_HelloWorld_display(JNIEnv *, jobject);
The HelloWorldImp.c file should have the same name (ie with package) and be in the same directory(ie ../../classes)
compile and build the shared library to get "libhello.so" file
gcc -c -fPIC -I/usr/lib/j2sdk1.3/include -I/usr/lib/j2sdk1.3/include/linux HelloWorldImp.c
gives .o file
gcc -shared -o libhello.so HelloWorldImp.o
gives .so file
then run java with the command in my first message. It works.
Thanks for the reply "thedracle".

How do you import a package into Forte?

I'm attempting to use a Java package from http://www.braju.com that essentially implements the standard C functions printf / sprintf, as part of an exercise to convert a C program to Java.
I can go into a (gasp!) Windows ME DOS window, set my Classpath to include C:\java\classes (where I put the hb15.zip file), and following the directions on Henrik's website I can type:java com.braju.format.Format -helpand see it work- but when I try to compile with Forte, the line...import com.braju.format.*;causes it to say, "package com.braju.format does not exist."
I just installed the early release (version 3) of Forte, which has no problem with standard Java imports such as:import java.lang.Math;Does anybody know what the problem is?

Hi.
I am using NetBeans 3.2 but I think it's pretty the same.
So here is how to set your classpath for your compiler :
1) decide what you're using as a compiler : internal or external compiler
2) go to main menu : Project - > Settings
3) Expand "Compiler Types" node
4) Select from here the compiler you're using (internal, external, fastjavac , etc )
5) click on the "Expert" tab and you'll find a "classpath" field that must be editable
6) append/add your location to the existing classpath
Now it should work.
They may be some (GUI) differences between the Forte and NetBeans main menu, but I think you've got the idea.
Regards,
Rick

Importing Java Class Question

Hello,
Sorry for such a newbie question and such a long post, I did remember how to do this before but now I can't for the life of me remember. Anyhow, I have a simple question about importing custom-made java classes, from another directory in the windows operating system. I have the classpath set, and also I realize that because the two files below are in the same directory theres no need for an import statement as Java will look for the class in the same directory.
But I would like to know how the import statement is suppose to look to import a custom made java class from another directory, (assuming of course that I set the correct classpath)
here's the java class location:
c:\school\csc365\narcus.java
//narcus.java
import java.io.*;
class narcus implements Comparable
String firstName = "firstName";
String lastName = "lastName";
 public narcus()
 firstName = firstName;
 lastName = lastName;
 public narcus(String f)
 firstName = f;
 lastName = lastName;
 public narcus(String f, String l)
 firstName = f;
 lastName = l;
public String getFirst()
return "first..";
 public int compareTo(Object e)
 return 1;
Here's the location of the driver program thats suppose to use the narcus.java class
c:\school\csc365\test.java
//test.java
//import statement? maybe import "c:\\school\\csc365\\*"; ?
import java.io.*;
class test
public static void main(String[] args)
 narcus jim = new narcus();
 System.out.println("omg\n");
 System.out.println(jim.getFirst());
And also, here is my classpath:
PATH=c:\school\csc365\;c:\school\
The classpath also points to the jdk libraries and few other directories but I didn't write that above, as it probably isn't relevant.
I've tried the following import statements.
import "c:\\school\csc365\\narcus.java";
import "narcus.java";
import "c:\\school\\csc365\\*";
But I keep getting an error that says:
test.java:1 <identifier> expected
Any help is appreciated!

Hi Folks,
I am new to this forum, heard that interesting discussions always happens on this forum so immediately registered,don't want to miss any oppurtunity to participate in discussions.
I have pretty much basic question regarding compiling and exceuting files in different packages.I have the following directory structure
C:\Projects\WDPROEast\Development\CommonService\Code\Java from where java files stored in different packages as follows:
com\wdpro\commerce\common\crm\dae\nautilus\adapter directory has java files in com.wdpro.commerce.coomon.crm.dae.nautilus.adapter package.
com\wdpro\commerce\common\dae\exception has java files with package named com.wdpro.commerce.common.dae.exception.
com\wdpro\commerce\common\dls\exception has java files with corresponding package name.
com\wdpro\commerce\common\dto has java files under proper package name.
com\wdpro\commerce\common\exception has java files with appropriate package name.
com\wdpro\commerce\common\util has java files with package name. I am starting at Java Directory,want to compile and run file named a.java in com.wdpro.commerce.coomon.crm.dae.nautilus.adapter package with having all other java files on classpath as follows
so I issued command for compilation as follows C:\Projects\WDPROEast\Development\CommonService\Code\Java>javac com/wdpro/commerce/common/crm/dae/nautilus/ada
pter/a.java com/wdpro/commerce/common/crm/dae/nautilus/adapter/NautilusServiceUtility.java com/wdp
ro/commerce/common/crm/dae/nautilus/adapter/URLReader.java com/wdpro/commerce/common/crm/dae/nautilus/adapter/
b.java com/wdpro/commerce/common/dae/exception/*.java com/wdpro/commerce/common/dto/*.java
com/wdpro/commerce/common/exception/*.java com/wdpro/commerce/common/util/*.java com/wdpro/commerce/common/dl
s/exception/*.java It compiled greatly but when I issue command to run a.class file as
C:\Projects\WDPROEast\Development\CommonService\Code\Java>java com/wdpro/commerce/common/crm/dae/nautilus/adap
ter/UtilityAccesssit's giving following exception
Exception in thread "main" java.lang.NoClassDefFoundError: com/wdpro/commerce/common/crm/dae/nautilus/adapter/
UtilityAccesssbut when I run a.java with the following command
C:\Projects\WDPROEast\Development\CommonService\Code\Java>java com/wdpro/commerce/common/crm/dae/nautilus/adap
ter/UtilityAccess com/wdpro/commerce/common/crm/dae/nautilus/adapter/NautilusServiceUtility.java com/wdpro/com
merce/common/crm/dae/nautilus/adapter/URLReader.java com/wdpro/commerce/common/crm/dae/nautilus/adapter/Nautil
usAccessUtility.java com/wdpro/commerce/common/dae/exception/*.java com/wdpro/commerce/common/dto/*.java com/w
dpro/commerce/common/exception/*.java com/wdpro/commerce/common/util/*.java com/wdpro/commerce/common/dls/exce
ption/*.javaSo my question do I need to add all required java files to path when required class files are under different packages?is it manadatory.
I hope you understand my question,pass me any comments you may have.
Thanks alot,
Anu

Importing java class in servlet

hi,
i need to import a java class file in a servlet. how do i do that.
also, when i remove the following lines, the import & the line following line,
//JavaClass class=new JavaClass();
msgsend class=new msgsend();
it compiles ok, else i get the error,
out.println cannot resolve symbol.
the code of the servlet is as follows:
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import java.sql.*;
import java.io.*;
import java.util.*;
import "msgsend.class";
* @author A
* @version
public class myemail2 extends HttpServlet {
String to,bcc,cc,from,subject;
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
HttpSession session = request.getSession();//geting a new session everytime this is called
PrintWriter out = response.getWriter();
try
System.out.println(1);
response.setContentType("text/html");
out.println("<html>");
out.println("<head>");
out.println("<title> </title>");
out.println("</head>");
to=request.getParameter("to");
from=request.getParameter("from");
bcc=request.getParameter("bcc");
cc=request.getParameter("cc");
subject=request.getParameter("subject");
System.out.println(to);
//JavaClass class=new JavaClass();
msgsend class=new msgsend();
System.out.println(2);
out.println("<body align= center bgcolor='white'>");
out.println(" <H2 align=center> ");
out.println("");
out.println("</FORM>");
out.println(" <pagebreak>");
out.println("<footer align=center><a href='/wpc.html'>");
out.println("Home Page");
out.println("</a></footer>");
//place javascript function for exiting window
out.println("</form>");
out.println("</body>");
out.println("</html>");
} catch(Exception e){ }
out.close();}
pls help,
thanx,
ashna

You have to do like the others import. You have to put import and the complete path(with all the packages).
For example:
import mypackage.msgsend;
and if you wouls like to import all the classes of a package use:
import mypackage.*;

Import java.*; question

Hi,
My understanding of the import keyword is somewhat similar to includes in C/C++ but the "*" is somewhat confusing. Is it not a wildcard meaning to 'include' all that is necessary in the subcategories? For example, I quite often see
import java.awt.*;
import java.awt.event.*;
Why is the second import necessary, shouldn't the first one include the second?
Thanks

.* includes all the class files in that package, not
all the sub packages, etc thats why the second is
neccessary...ah, ok... thanks for the quick and clear answer. So understanding the structure of the API is important. It's nice to have the API on the web, but anyone find value in that new Java Almanac book that covers 1.4?

Importing Java Packages

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