[java] Forum Topics

This is just a general question. I was wondering how you can make programs compile and run quicker? Does it have to do with the primative type you use or what?

I'm stuck while doing my school's java project. Anyone interested in helping out?? i need a sample on an instant messenging server & client java codes. Do help by showing me a couple of them ? So as to get an idea of how to do my project or start …

I recently bumped into this interesting problem when writing code that used serial port communications. Writing data to serial port fails after ~ 30 seconds of use. Everything works fine for the first 30 seconds or so, then an IOException: write error occurs. I am writing data to the OutputStream …

Hello All, This is my first time taking Java, so I might need quite a bit of help form ya all. Anyways, I have this program that has to be in Applet, and it is comparing two floating numbers. I have to have the program decide which one is larger, …

:?: hello everyone, id like to ask for some help. i am a beginner in Java programming. i am doing mastermind game using java. the whole logic of the game is already finished, and my ONLY problem now is :?: HOW will i be able to repeat the whole game …

hi all.iv been assigned a project to create rule sets for a database using using Java and Xml. i am supposed to create rules and then customize the rules as required into various modules. initially i am supposed to use a flat file but later move on to a DB. …

Does anyone knows is there any sample Java swing program that able to display records from database according to user searching option...

When tring to write a program using a class, my instructions is to request an imput of three numbers and then create a random class to generate three numbers, after doing so, i must determine if the random class highest number matches the highest number of the numbers instructed to …

Hi! Can anyone help me on the below java program? How to call the thread program - the parallel program? my program can only run in sequetial but not parallel... I need to write a program that will receive as input a single M x N dimensional matrix A with …

how can I change the attributes of a file as read only .. and hidden ....... and turn back to read write .. and visible?

Why do I get this error? GUI3.java:13: GUI3 is not abstract and does not override abstract method actionPerformed(java.awt.event.ActionEvent) in java.awt.event.ActionListener public class GUI3 extends JFrame implements ActionListener ^ 1 error please help me! thanks.

I need a little help connecting to a database in Java. The example in the book I have uses the following: [code] static final String JDBC_DRIVER = "com.ibm.db2j.jdbc.DB2jDriver"; static final String DATABASE_URL = "jdbc:db2j:books"; [/code] It goes on to use it: [code] System.setProperty("db2j.system.home", "C:/mysql"); Class.forName(JDBC_DRIVER); connect = DriverManager.getConnection(DATABASE_URL); [/code] First …

im compiling a who wants to be a millionare game and i am unsure where to start does any one have any ideas??? :mrgreen: thanks

I have been working on TicTacToe for some time now. I just now got it to work but it's not working properly. When somebody gets three in a row a label is suppose to show that a player has won but it does'nt. So I cant figure out why it's …

i have a project is something like instant messaging, how to know who logged in and check wheather the user is in my userlist (e.g user.txt) Anyone can help me?

Hi everyone, I would like to ask if anyone knows how to load classes from a .jar file and what api i should be looking at. Could someone show me or e-mail me the codings of how to do this the right way. My e-mail is [email]freesoft_2000@yahoo.com[/email] Thank You Yours …

I have a working Java application (command line input only) that I would like to adapt to run on a web server and accept input and give output to a servlet/JSP page. I am familiar with basic Java programming - am having trouble knowing what to do first. This seems …

Hello, I am new member here I need help with my program. I am trying to calculate interst for a loan I am not able to calculate last payment for loan like if loan amount is 1000 and interst rate is 18% which come up 1.5% for every month and …

Hi all new in this forum I'm facing a problem. I need to pass the contents of an XML file to a hash table. The problem is that for each key i have multiple values. i.e. <?xml version="1.0" encoding="utf-8" ?> <Menu> <File> <EN>...</EN> <FR>...</FR> <IT>...</IT> </File> <ShowHide> <EN>...</EN> <FR>...</FR> <IT>...</IT> …

Can someone help mi I need to do a word count i enter a word e.g. superboymother it will search for the char a,e,i,o,u and return mi the result is: a=0 e=2 i=o o=2 u=o

Hi, I am a novice in programming and need help in my mortgage calculation program. I have the GUI set up all functioning good the only problem I have is the calculation portion that is not doing its job. Can anyone please guide me how to correct my problem? import …

Hi to all i have requirment like this the field length is 15 digits but am getting input only 6 digits..means i have to put spaces after the 6 digits position menas spaces after the value.how to do it in java,could u send the sample programe . thanks in advance …

hi all. i need to write an application class with a main method and a second method called tempCalc, and then in the second method put the code from a previouse temperature calculation experiment. but i have no idea how to do this. i read the part in "Sams Teach …

does anyone know where i can get source code to write a java 2 program GUI that converts integers to roman numerals? i would appreciate it. my e-mail address is <<snip>>. by the way, here is my code: import java.io.*; public class Roman{ static final int values[]={1,5,10,50,100,500,1000}; static final char …

i have started to create a simple java game and at the moment i have done as much as i can possible at the moment the game builds with no errors. but it does nothing. what i want it to do is that the player enters a bid and if …

hi to everyone.... I got a problem with queries.... before i tell my problem, please look at the is code - // employeeCode is ArrayList containing employee codes. String query = "SELECT Name, FatherName from Employee WHERE "; for(int i=0; i<employeeCode.size(); i++) { if(i == 0) { query += " …

Hi everyone, I want to know how to print the contents of the text area including all its fonts to the printer. I have no idea how to implement this in awt. Could someone show me or e-mail me any sample codings on how the print functionality can be implemented …

hi there guys.Can anione please show me how to create a always on top frame.(no native methods)

What is a Glass Pane ? and how should I use it ... please give an example. Thanks.

Hi everyone, I am trying to load images in the canvas but it seems nothing gets loaded at all but the program compiles without any errors. It is actually a simple image viewer and have tried almost everything. Anyway here is my program and i hope someone can help me …