I need help In my project
Hi
Iam computer engineering student, Iam working on design course
The idea of my project is to use both speech to text and text to speech code to help deaf people to communicate with others using a telephone.
Can u tell me if I can use java code for "voice recognition" and java code for text to speech in my project?
I my idea impossible or can i work on it please tell me I need help.
thanx alot
heloo sir..
i have a small doubt in setting the size of the panel...i.e...code as follows..
public class ImageRegion extends JPanel
out side the class i creted the object of that class i.e..
imageRegion = new ImageRegion( ) ;
and an image(has specified size) is dispalayed inside the object panel ..
so im not able to set the size of the object Panel..i used setSize() and setPreferedSize() methods but im getting the height and width as zero if i try to print the size by using the getHeight() and getWidth() methods..
please help me..and replay to this mail as early as possible..
Regards..
VIVEK
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Need help with calculator project for an assignment...
Hi all, I please need help with my calculator project that I have to do for an assignment.
Here is the project's specifications that I need to do"
"""Create a console calculator applicaion that:
* Takes one command line argument: your name and surname. When the
program starts, display the date and time with a welcome message for the
user.
* Display all the available options to the user. Your calculator must include
the arithmetic operations as well as at least five scientific operations of the
Math class.
-Your program must also have the ability to round a number and
truncate it.
-When you multiply by 2, you should not use the '*' operator to perform the
operation.
-Your program must also be able to reverse the sign of a number.
* Include sufficient error checking in your program to ensure that the user
only enters valid input. Make use of the String; Character, and other
wrapper classes to help you.
* Your program must be able to do conversions between decimal, octal and
hex numbers.
* Make use of a menu. You should give the user the option to end the
program when entering a certain option.
* When the program exits, display a message for the user, stating the
current time, and calculate and display how long the user used your
program.
* Make use of helper classes where possible.
* Use the SDK to run your program."""
When the program starts, it asks the user for his/her name and surname. I got the program to ask the user again and again for his/her name and surname
when he/she doesn't insert anything or just press 'enter', but if the user enters a number for the name and surname part, the program continues.
Now my question is this: How can I restrict the user to only enter 'letters' (and spaces of course) but allow NO numbers for his/her surname??
Here is the programs code that I've written so far:
{code}
import java.io.*;
import java.util.*;
import java.text.*;
public class Project {
private static String nameSurname = "";
private static String num1 = null;
private static String num2 = null;
private static String choice1 = null;
private static double answer = 0;
private static String more;
public double Add() {
answer = (Double.parseDouble(num1) + Double.parseDouble(num2));
return answer;
public double Subtract() {
answer = (Double.parseDouble(num1) - Double.parseDouble(num2));
return answer;
public double Multiply() {
answer = (Double.parseDouble(num1) * Double.parseDouble(num2));
return answer;
public double Divide() {
answer = (Double.parseDouble(num1) / Double.parseDouble(num2));
return answer;
public double Modulus() {
answer = (Double.parseDouble(num1) % Double.parseDouble(num2));
return answer;
public double maximumValue() {
answer = (Math.max(Double.parseDouble(num1), Double.parseDouble(num2)));
return answer;
public double minimumValue() {
answer = (Math.min(Double.parseDouble(num1), Double.parseDouble(num2)));
return answer;
public double absoluteNumber1() {
answer = (Math.abs(Double.parseDouble(num1)));
return answer;
public double absoluteNumber2() {
answer = (Math.abs(Double.parseDouble(num2)));
return answer;
public double Squareroot1() {
answer = (Math.sqrt(Double.parseDouble(num1)));
return answer;
public double Squareroot2() {
answer = (Math.sqrt(Double.parseDouble(num2)));
return answer;
public static String octalEquivalent1() {
int iNum1 = Integer.parseInt(num1);
String octal1 = Integer.toOctalString(iNum1);
return octal1;
public static String octalEquivalent2() {
int iNum2 = Integer.parseInt(num2);
String octal2 = Integer.toOctalString(iNum2);
return octal2;
public static String hexadecimalEquivalent1() {
int iNum1 = Integer.parseInt(num1);
String hex1 = Integer.toHexString(iNum1);
return hex1;
public static String hexadecimalEquivalent2() {
int iNum2 = Integer.parseInt(num2);
String hex2 = Integer.toHexString(iNum2);
return hex2;
public double Round1() {
answer = Math.round(Double.parseDouble(num1));
return answer;
public double Round2() {
answer = Math.round(Double.parseDouble(num2));
return answer;
SimpleDateFormat format1 = new SimpleDateFormat("EEEE, dd MMMM yyyy");
Date now = new Date();
SimpleDateFormat format2 = new SimpleDateFormat("hh:mm a");
static Date timeIn = new Date();
public static long programRuntime() {
Date timeInD = timeIn;
long timeOutD = System.currentTimeMillis();
long msec = timeOutD - timeInD.getTime();
float timeHours = msec / 1000;
return (long) timeHours;
DecimalFormat decimals = new DecimalFormat("#0.00");
public String insertNameAndSurname() throws IOException{
boolean inputCorrect = false;
while (inputCorrect == false) {
while (nameSurname == null || nameSurname.length() == 0) {
for (int i = 0; i < nameSurname.length(); i++) {
if ((nameSurname.charAt(i) > 'a') && (nameSurname.charAt(i) < 'Z')){
inputCorrect = true;
else{
inputCorrect = false;
break;
try {
BufferedReader inStream = new BufferedReader (new InputStreamReader(System.in));
System.out.print("Please enter your name and surname: ");
nameSurname = inStream.readLine();
inputCorrect = true;
}catch (IOException ex) {
System.out.println("You did not enter your name and surname, " + nameSurname + " is not a name, please enter your name and surname :");
inputCorrect = false;
System.out.println("\nA warm welcome " + nameSurname + " ,todays date is: " + format1.format(now));
System.out.println("and the time is now exactly " + format2.format(timeIn) + ".");
return nameSurname;
public String inputNumber1() throws IOException {
boolean inputCorrect = false;
while (inputCorrect == false) {
try {
BufferedReader br = new BufferedReader (new InputStreamReader(System.in));
System.out.print("\nPlease enter a number you want to do a calculation with and hit <ENTER>: ");
num1 = br.readLine();
double number1 = Double.parseDouble(num1);
System.out.println("\nThe number you have entered is: " + number1);
inputCorrect = true;
} catch (NumberFormatException nfe) {
System.out.println("\nYou did not enter a valid number: " + "\""+ num1 + "\" is not a number!!");
inputCorrect = false;
return num1;
public String calculatorChoice() throws IOException {
System.out.println("Please select an option of what you would like to do with this number from the menu below and hit <ENTER>: ");
System.out.println("\n*********************************************");
System.out.println("---------------------------------------------");
System.out.println("Please select an option from the list below: ");
System.out.println("---------------------------------------------");
System.out.println("1 - Add");
System.out.println("2 - Subtract");
System.out.println("3 - Multiply");
System.out.println("4 - Divide (remainder included)");
System.out.println("5 - Maximum and minimum value of two numbers");
System.out.println("6 - Squareroot");
System.out.println("7 - Absolute value of numbers");
System.out.println("8 - Octal and Hexadecimal equivalent of numbers");
System.out.println("9 - Round numbers");
System.out.println("0 - Exit program");
System.out.println("**********************************************");
boolean inputCorrect = false;
while (inputCorrect == false) {
try {
BufferedReader inStream = new BufferedReader (new InputStreamReader(System.in));
System.out.print("Please enter your option and hit <ENTER>: ");
choice1 = inStream.readLine();
int c1 = Integer.parseInt(choice1);
System.out.println("\nYou have entered choice number: " + c1);
inputCorrect = true;
} catch (NumberFormatException nfe) {
System.out.println("You did not enter a valid choice number: " + "\""+ choice1 + "\" is not in the list!!");
inputCorrect = false;
return choice1;
public String inputNumber2() throws IOException {
boolean inputCorrect = false;
while (inputCorrect == false) {
try {
BufferedReader br2 = new BufferedReader (new InputStreamReader(System.in));
System.out.print("\nPlease enter another number you want to do the calculation with and hit <ENTER>: ");
num2 = br2.readLine();
double n2 = Double.parseDouble(num2);
System.out.println("\nThe second number you have entered is: " + n2);
System.out.println("\nYour numbers are: " + num1 + " and " + num2);
inputCorrect = true;
} catch (NumberFormatException nfe) {
System.out.println("You did not enter a valid number: " + "\""+ num2 + "\" is not a number!!");
inputCorrect = false;
return num2;
public int Calculator() {
int choice2 = (int) Double.parseDouble(choice1);
switch (choice2) {
case 1 :
Add();
System.out.print("The answer of " + num1 + " + " + num2 + " is: " + decimals.format(answer));
break;
case 2 :
Subtract();
System.out.print("The answer of " + num1 + " - " + num2 + " is: " + decimals.format(answer));
break;
case 3 :
Multiply();
System.out.print("The answer of " + num1 + " * " + num2 + " is: " + decimals.format(answer));
break;
case 4 :
Divide();
System.out.print("The answer of " + num1 + " / " + num2 + " is: " + decimals.format(answer));
Modulus();
System.out.print(" and the remainder is " + decimals.format(answer));
break;
case 5 :
maximumValue();
System.out.println("The maximum number between the numbers " + num1 + " and " + num2 + " is: " + decimals.format(answer));
minimumValue();
System.out.println("The minimum number between the numbers " + num1 + " and " + num2 + " is: " + decimals.format(answer));
break;
case 6 :
Squareroot1();
System.out.println("The squareroot of value " + num1 + " is: " + decimals.format(answer));
Squareroot2();
System.out.println("The squareroot of value " + num2 + " is: " + decimals.format(answer));
break;
case 7 :
absoluteNumber1();
System.out.println("The absolute number of " + num1 + " is: " + decimals.format(answer));
absoluteNumber2();
System.out.println("The absolute number of " + num2 + " is: " + decimals.format(answer));
break;
case 8 :
octalEquivalent1();
System.out.println("The octal equivalent of " + num1 + " is: " + octalEquivalent1());
octalEquivalent2();
System.out.println("The octal equivalent of " + num2 + " is: " + octalEquivalent2());
hexadecimalEquivalent1();
System.out.println("\nThe hexadecimal equivalent of " + num1 + " is: " + hexadecimalEquivalent1());
hexadecimalEquivalent2();
System.out.println("The hexadecimal equivalent of " + num2 + " is: " + hexadecimalEquivalent2());
break;
case 9 :
Round1();
System.out.println("The rounded number of " + num1 + " is: " + decimals.format(answer));
Round2();
System.out.println("The rounded number of " + num2 + " is: " + decimals.format(answer));
break;
case 0 :
if (choice2 == 0) {
System.exit(1);
break;
return choice2;
public String anotherCalculation() throws IOException {
boolean inputCorrect = false;
while (inputCorrect == false) {
try {
BufferedReader br3 = new BufferedReader (new InputStreamReader(System.in));
System.out.print("\nWould you like to do another calculation? Y/N ");
more = br3.readLine();
String s1 = "y";
String s2 = "Y";
if (more.equals(s1) || more.equals(s2)) {
inputCorrect = true;
while (inputCorrect = true){
inputNumber1();
System.out.println("");
calculatorChoice();
System.out.println("");
inputNumber2();
System.out.println("");
Calculator();
System.out.println("");
anotherCalculation();
System.out.println("");
inputCorrect = true;
} else {
System.out.println("\n" + nameSurname + " thank you for using this program, you have used this program for: " + decimals.format(programRuntime()) + " seconds");
System.out.println("the program will now exit, Goodbye.");
System.exit(0);
} catch (IOException ex){
System.out.println("You did not enter a valid answer: " + "\""+ more + "\" is not in the list!!");
inputCorrect = false;
return more;
public static void main(String[] args) throws IOException {
Project p1 = new Project();
p1.insertNameAndSurname();
System.out.println("");
p1.inputNumber1();
System.out.println("");
p1.calculatorChoice();
System.out.println("");
p1.inputNumber2();
System.out.println("");
p1.Calculator();
System.out.println("");
p1.anotherCalculation();
System.out.println("");
{code}
*Can you please run my code for yourself and have a look at how this program is constructed*
*and give me ANY feedback on how I can better this code(program) or if I've done anything wrong from your point of view.*
Your help will be much appreciated.
Thanks in advanceSmirre wrote:
Now my question is this: How can I restrict the user to only enter 'letters' (and spaces of course) but allow NO numbers for his/her surname??You cannot restrict the user. It is a sad fact in programming that the worst bug always sits in front of the Computer.
What you could do is checking the input string for numbers. If it contains numbers, just reprompt for the Name.
AND you might want to ask yourself why the heck a calculator needs to know the users Name. -
Need help for my project(how to call function in ancestor object)
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say i have a class call frameA and frameB, both of them are extend from
JFrame, frameA structure can be described briefly as follow:
//frameA.java
public class frameA extends JFrame{
private frameB fb;
public frameA()
fb=new frameb();
show();
public void func()
JOptionPane.showMessageDialog(null,"OK");
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what should i add inside frameB? i need the answer urgently......
thanx a lot!!!
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Here's the sample code I hope will help:
class MyApp{
B bFrame;
A aFrame;
class A extends JFrame{
public void doSomething(){
bFrame = new B();
bFrame.doSomething();
class B extends JFrame{
public void doSomething(){
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Hi,
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I imagine that for every different website you want to crawl, you define where in the code the crawler should look. E.g.: (where xxx is the product code)
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For this specific site you add url1, url2, url3... urlN for the pages you want the program to crawl.
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private static final String[] VAL = {
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J",
"K", "L", "M", "N", "O", "P", "Q", "R", "S", "T",
"U", "V", "W", "X", "Y", "Z", ":", "-", "\n", " "
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28, 1, 4, 6, 8, 13, 29, 19, 26, 27, 28, 5, 17, 14,
12, 26, 29, 2, 14, 12, 28, 19, 14, 26, 29, 2, 14, 12,
15, 0, 13, 24, 29, 2, 29, 27, 29, 2, 14, 11, 3, 29,
18, 19, 4, 4, 11, 29, 2, 7, 0, 17, 11, 8, 4, 28,
12, 4, 18, 18, 0, 6, 4, 26, 29, 18, 12, 14, 10, 4,
29, 4, 12, 29, 8, 5, 29, 24, 14, 20, 29, 6, 14, 19,
29, 4, 12, 28, 4, 13, 3, 29, 19, 26, 27, 28
static {
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catch(InterruptedException ie){}
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Need Help Deploying Creator Project with Derby as Embedded
HI,
I have developed a web app using creator and the derby database instance that runs within creator. Now I want to war up the app and include the derby db as an embedded database. I have included the derby jar file in my lib directory and have created a new datasource with the derby embedded driver for testing. I cannot seem to get the db to run as embedded. My data source is setup as follows:
dataSource name="DerbyTest3"
driverClassName="org.apache.derby.jdbc.EmbeddedDriver"
url="jdbc:derby:../sample"
validationQuery="select * from "
username="dbadmin"
password="7237EACC50DB74EF"
/>
The sample database was copied from the creator source tree and inserted under WEB-INF
When I try to connect I get the following error:
Description: An unhandled exception occurred during the execution of the web application. Please review the following stack trace for more information regarding the error.
Exception Details: org.apache.jasper.JasperException
java.sql.SQLException: Error in allocating a connection. Cause: Connection could not be allocated because: Database '../sample' not found.
Possible Source of Error:
Class Name: org.apache.jasper.servlet.JspServletWrapper
File Name: JspServletWrapper.java
Method Name: service
Line Number: 384
any help greatly appreciated.
gary
Message was edited by:
garff
Message was edited by:
garffOne of our developers mentioned this, but it's also in the derby ref manual for the SQLException you're getting:
http://db.apache.org/derby/docs/10.2/ref/rrefattrib26867.html
sounds like you needed to append
;create=true
to the JDBC Url...
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skj -
The contestants will demo their application/web site on a machine with 128 Meg RAM only.
You will build an application/web site that helps Hollywood movie fans do research on the data available at the Internet Movie Database. Two kinds of users can access your application, movie fans and the database administrator. The movie fans basically lookup the data, while the administrator also has the capability to add, update, and change data. You will use your imagination to define the functionality of this application/web site given the kind of data that is available at Internet Movie Database.
Minimum Requirements:
At a minimum your program should prompt for the name of a Hollywood movie star. For each movie star it will list the actor or actress who has been in the most movies with the movie star. If there is a tie, all persons in the tie are listed. For each actor in the listing shared movies are to be listed. For example, if the input actor is "Hanks, Tom", the output would look something like:
Reiner, Tracy (5 shared roles):
Apollo 13 (1995)
Big (1988)
League of Their Own, A (1992)
Nothing in Common (1986)
That Thing You Do! (1996)
For "Roberts, Julia" there is a tie, so output would look something like
D'Onofrio, Vincent (3 shared roles):
Dying Young (1991)
Mystic Pizza (1988)
Player, The (1992)
Roberts, Lisa (I) (3 shared roles):
I Love Trouble (1994)
Runaway Bride (1999)
Something to Talk About (1995)
Test your program on the following actors:
Abbott, Bud
Cher
Cruise, Tom
Diaz, Cameron
Doe, Jane
Leno, Jay
Lopez, Jennifer
Parker, Sarah Jessica
Presley, Elvis
Shatner, William
The Input Files for the minimum requirements:
There are two data files; both have identical formats. These files are: actors file (actors.list.gz) and actresses file (actresses.list.gz). These files are both compressed in .gz format, and are available from the Internet Movie Database. Combined, they are 45+ Mbytes (compressed!).
These data files contain approximately 590,000 actors/actresses in a total of 171,000 movies, with 1,900,000 roles. These files also list TV roles, you must allow option to include or exclude TV roles in your analysis.
What To Submit:
Submit complete source code and demo your application on a machine with RAM of 128 Meg only. Also indicate how long your different algorithms take. Each submission will be judged on the basis of efficiency of the algorithms, the functionality of your application/web site, the usability and crispness of your user interface, the extra steps your application takes to avoid running out of memory, and the object-oriented design of your program.
You are free to write a standalone GUI based program, or/and develop a Web Site, which allows global access to your application. You can use Servlets/JSP or ASP.NET for this purpose. However, you are not allowed to use any database software or utility container classes (Java or C#).
You may not uncompress the data files that you obtained from Internet Movie Database outside of your program or put them in a database provided by any vendor i.e. you cannot use databases provided by Oracle, Microsoft, etc. However, you are free to write your own data management code that reads from these files at the start of the application creates and writes back to them at the time of shut down of the application. You are also allowed to create temporary files during the execution of the program./sigh
If you are having problems with you project then post your problems but do not expect us to do your homework for you hehe.
You should post a detailed description of what you are trying to do, the code that doesnt work, the error message that you are getting and what ever sysmtoms that your application is showing to you so that we ma have a good idea on how to help you ... with out having to do your work for you :p -
Need help on security projects
Hi,
we are small network providers. we supply routers, switches, firewalls and also do configurations.
now we are interested in big size projects. For that I want to know, what security projects include?
please provide me full details about security projects. If possible some real time project details.
help would be appreciated in advance.
Regards
skraocheck out the SAFE blueprints on Cisco web site.
http://www.cisco.com/en/US/partner/netsol/ns340/ns394/ns171/ns128/networking_solutions_white_papers_list.html -
Ok, I'm in Computer Science 2 (Java Programming 2) and its been pretty much a year or maybe even more since I've done any programming. We've been handed out our first project, which is now due tomorrow, and I don't know why I waited last minute to do this but whatever. Anyway what it is is this is the problem:
A small airline has decided to create a new automated system for reservations. You have been hired to write the program for this system. Customers will be allowed to request seats, or to cancel an existing reservation on a single flight of the airline's only plane which has a capacity of 10 seats.
Ok so far I've created the project1 file, I've made classes, Seat class, Airplane class, and Application class. Right now I'm working on the Seat class which needs to store the type of seat first or coach, whether the seat is empty or occupied and the seat number. This is what I have so far in that class, and I am stuck. I know I need an accessor method to retrieve the number and type but how do i go about it.
public class Seat
int seatNum;
String reserve;
public Seat()
reserve = new String();
seatNum = 0;
}no i'm not looking for someone to do it for me ... ok this is what i have now.
public class Seat
int seatNum;
String reserve;
public Seat()
reserve = new String();
seatNum = 0;
public int getSeatNumber() {
return seatNum;
public String getReserve() {
return reserve;
public void setReserve(String reserve) {
this.reserve = reserve;
} -
Need help understanding a project please
Hi, i just finished reading through this lab that i'm supposed to do, but have no idea what i am supposed to do. Could anyone here possibly help me understand it in an easier fashion? I would really appreciate it.
Assignment:
For this assignment, we will create a number class that can help us create classes for objects like clocks or angles. The number class will have to be general enough so that we can define different bases for it. Clocks need numbers of base 24 (or 12) and 60. Angles need numbers of base 360 and 60. For now, we are going to simplify things and only define constructors, a toString method, and an increment method. Of course, a complete number class would have many other methods, such as adding, subtracting, multiplying, comparing, and negating the numbers. Since a number is made up of digits, we will also define a digit class. The number and digit classes appear very similar because they have nearly the same methods. The differences are in the implementations of the methods.
Write a number class that represents a number with a given base. The number class has two constructors. The default constructor sets the base at 10 and the value to 0. The other constructor accepts a decimal value and a base. The constructors will have to create all of the digits (as objects of the digit class) and store them in some kind of list. Create a toString method and an increment method. These two methods will use the corresponding methods of the digit class to do most of the work for them.
Write a digit class that represents a single digit with a given base. The digit class has two constructors. The default constructor sets the base at 10 and the value to 0. The other constructor accepts a decimal value and a base. Create a toString method and an increment method. The increment method should return a boolean: true if there is a carry and false if not.
For both classes, you can assume that the bases are restricted to binary, octal, decimal or hexadecimal and the values are non-negative.
Instructions:
Write a test driver that proves that your classes work.Myrdwin wrote:
It's not that i didn't bother to ask him earlierSo, your teacher gave you the assignment, without giving you any opportunity to talk to him between when he assigned it and when it's due?
I just finished the polymorphism lab with a bunch of farm animals last night. WHOAH! TMI!!! ;-)
Am i just reading into the lesson to much and making it way more complicated than it actually is?Like I said, I'm not going to try to interpret the whole thing for you but a) It tells you what to do with the c'tors, and b) I would always assume that "create a method" or "define a method" or whatever he says means "create a *fully functional, correct* method", unless he explicitly states to leave it empty for now.
My advice is to use your best judgment as to what's expected, and get started on that basis. At your first opportunity to speak to your teacher, explain your uncertainty and the assumptions you made.
If you have specific questions along the way, post them here, along with your code or an SSCCE.
When you post code, use the CODE button or [code] and [/code] tags to preserve formatting and make your code readable.
Edited by: jverd on Oct 3, 2008 11:57 AM
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