[java] Forum Topics

I took a course in C and now im into java. I never created anywith graphics in C. I need to finish a program in C that makes a red ball appear on a blue background and then move down and up the screen. Any information of how to at …

Can applets display images on the viewers hard drive somehow? If so how would I do that? And if I dont know the filenames but I know the directory, is there a way to do it?

Well once again I have some trouble getting my lab to work. I am currently having trouble on an algorithm that is supposed to count the neighbors next to a cell in a Two-dimensional array which is supposed to resemble with the algorithm of Conway's Game of Life. For some …

Hi peeps, I was wondering if anyone could help me. Im using a [B]JEditorpane[/B] to display a html page in. What I want to do is to change the font colour of the html page. I have tried to use the [B]setCaret()[/B] method, but to no avail. Anyhelp would be …

Hi everyone, I am trying to save the contents the of the jtable together with all its fonts and everything else. The program compiles without any errors but When i try to save the contents of the JTable an exception is thrown in the tablesaveas method in the below method …

I had installed MinGW-3.2.0-rc-3.exe and i was trying to compile a simple code: [code] public class HelloWorld { public static void main(String args[]) { System.out.println("Hello, World"); } } [/code] then i typed this command under vim, !java d:\progsaved\java\jdk\HellWorld, before i typed this !javac d:\progsaved\progsaved\java\jdk\HelloWorld.java to generate class file. The errors …

I have the datasoure and drivers set up, but for some reason this code is not updating the database. [Code] import java.sql.*; public class TestCreateCoffeeTable { public TestCreateCoffeeTable() { } public static void main(String[] args) { try { String createStatement; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String dataSource = "jdbc:odbc:Coffeebreak"; Connection con = DriverManager.getConnection(dataSource); Statement …

Hi everyone, I have a question about threads. Consider the below program [code] public class test { public void test1() { System.out.println("Test 1"); } public void test2() { System.out.println("Test 2"); } public void test3() { System.out.println("Test 3"); } public static void main(String args[]) { test a = new Jtest(); a.test1(); …

Hi I need to write a method that will rotate the elemnts in an array by a factor of k. ie shift each element k places to the right. Here is the question i have been set [B]In the class ArrayLinearList a linear list is represented in an one-dimensional array …

Hello everyone, I want to know which method owns the lock of a specific object (some of my methods are blocked because they can not achieve the lock of a specific object, and I am wondering which method owns the lock to solve the deadlock issue). Does anyone know how …

Hello everyone, I am looking for a light-weighted Web proxy in Java which can enhance the performance of my web server. I want it to be written in Java so that it can be used on any platform. I want to place the Web proxy between a specific Web server …

Hi everyone, I have a jtable and i need a way to be able to merge or to split the cells(both the rows and columns) selected by the user. I have seen the table model and jtable apis' and there seems to be nothing about this. I would appreciate it …

Hello, I am a java/html novice. Actually I have no clue as to what I am doing. Currently I have some java applets that communicate with a server and display data based upon what state the equipment is in. Say an input to a system is true it will display …

Hey guys n girls, I have two arrays (one for x and one for y axis) which contain labels i would like to display on a graph. How do you recommend i do this? I was thinking multiple JLabels, spread out depending on the quantity. But If theres a better …

Topic is misleading I edited it. What would be the best way to put a period at the end of a sentence without just adding it to the last word or last variable etc. Like say i had String s = "Hello I am a sentence"; what would be the …

I am taking a basic java programming class. Unfortunetly it is an online class, and I am unable to find a tutor. We are using the book Java How to Program sixth Ed. and are going through two to three chapters a week. I am soo lost!! My next lab …

I'm curious as to how many of you routinely use jdk 1.5 tigers added features, methods, api's and whatever. Or, do you just stick to 1.4?

Hi, I have been trying to solve this problem for a while now. I wrote a program that analyzes 3 numbers entered by a user. All calculations are working fine. Now I am attempting to use 'if' statements to display the largest and smallest number entered. I am adjusting the …

I need the ball to move down until it hits the end of the blue rectangle then move back up until it hits the top and repeat forever. What's wrong with my code? [code] //This applet draws an animated bouncing ball with uniform speed. //The ball starts at the center …

Hi everyone, I have a question to ask about printer attributes. I am using the PrintRequestAttributeSet class and am a bit confused as to whether i will still have to use the PageFormat class to set the page format of my printed page. See this below function [code] public void …

Hi everyone, I am trying to center a page number on the bottom center on a printed page but i am having some trouble doing it. I am using the windows default page dialog where the user can select the desired page size(ie, a1,a2,a4) but i am unable to center …

I have a few problems. I want to read in a .dat file with characters like below: A B C B * D D * J J * * i used a readLine() from a fileReader, and put all of the characters into a char array. Then i want to …

is there a way that i could run java on a windows 95 machine. right now dont know all the specs will get back to you on that. the reason i want to know is a recently got a book on how to code java only problem is my computer …

I am doing a project on sending & retrieving sms via java.pls tell me the source code as i am not able to use AT commands in program.

I have been using JAVA for a whole two weeks now. I am enrolled in CSC 148 at my local college. I am supposed to write a program that asks the user for his or her age and replies with the day of the week on which he or she …

I am relatively new to JAVA, so I am still struggling in areas. What is the best way to go about creating a Calendar similar to the one found in Microsoft Works. I am working on an application for a client that requires a calendar which he/she can use to …

Hello everyone, I am wondering how to remove debug information (for example, System.out or System.err) automatically when I build/compile a Java project? Does Java compiler or build tool has such options when we build/compile a Java application? Thanks in advance, George

Hello everyone, I am wondering how to play sound (for example, .wav, .mp3, etc.) on J2ME platform, especially Foundation profile. Can anyone provide any resources? Thanks in advance, George

Is it possible to write a java program that connects to a phpBB or another type of message board, logs in with your info, and can post messages or make new topics? I have used google before but i couldnt find any similar apps. What classes would I have to …

Hi all, How i make a call servlet to servlet.... code & description is needed. Please help me.. Thanking you. Rishi.