Black Box

hi friends, I'm Mathew doing my 2nd year MCA in The American College, madurai. now its fourth semester going on. In this semester i have to do projects in Java. i know java better upto swings. Could you please suggest me some topics and its details. you can send it …

HOw does interpolation search work, help me with how you end up with log(logN)

I am going to develop a roadway traffic light simulator using java as my academic project. I have captured ideas about so from searching internets .I have to build a system which simulates a traffic network and the traffic flow is regulated using a fixed time controller first and then …

i know this could be very simple for you guys but i do have a problem with this. The program searches for a particular array from a text file(i don't know how to import a text file too) and counts the number of occurrence in it. The text file is …

This is a relatively simple program but for some reason, I can't compile it. I'm pretty sure the code is correct and working. My compiler keeps saying that it cannot find a constructor matching a HourlyWorker constructor when I instantiate a HourlyWorker object. I've checked and rechecked the code (in …

Hi, is there any website have a lots of sample code and eg. to download. I'm quite new to JAVA cos no sticky threads for this. & also how can I do a simple buttongroup with captions?

Hey i have to create a 2D array of rows and columns which will takes a row and a columns as a paremeter and enters a string into that positions. I managed [i think so] to create the array but i cant find a way of getting from the user …

hi, i am new beginner of the java & i want to create a application such using applet for create user - student & admin.

Hello, I am new to java and was looking all over the place for a pop up type warning box coding for java. If someone has any ideas, that would be excellent! Thanks!

i need some help with the SlowMovevertical method, i dont know how to incorparate it correctly into my source code to make it work? thanks if you can help.

I am a final year student and thinking of a project topic to do. Any suggetion?

Im trying to move picture used on one button to another button, i tried Icon pic = btnA1.getIcon(); btnA1.setIcon(pic);

Hello and good evening everyone :) I've written up a program that counts the number of times each number on a die (dice) is rolled, with the percent. Only thing is, I'm not quite sure how to output the percent. Everything else seems to be working except that part... What …

How frustrating... I get to the end of something that looks as if it should go through the compiler ok, but it doesn't. I'm trying to make a sort-of stop watch that counts in nanoseconds. What did I do wrong, or what am I missing now? [code] public class Counter …

Hello there guys, I've got a strange problem... I'm using NetBeans IDE v5.5 and when I run my application inside netbeans by clicking 'Run main project' it runs and everything works correctly. Now when I go to the dist folder and double click it... (the Jar file is assicated with …

Could you help me optimize the following fragment of java code please? For (i=0; i<=9999; i=i+1) { for(j=0;j<=9999;j=j+1) { if (a[i,j]>0 && b[i]>0) { a[i,j]=a[i,j]*2 + b[i]; } } } Thankyou also can i just ask, could you tell me the purpose and give short examples of the input/output of …

I`m creating a desktop application which need s to store some data. I would probably store no more than 100rows with 10-15cells. Question is, should I use csv or an sql database; which one is accessed faster ?

Hi I just started to learn Java and I woulkd like to make my life a little bit easier. I am looking for a good java compiler, something that works as good as Dev-c++ for c++. The application taht collor specific text of code and do the indentation. Thanks

My tic tac toe board is done, but I need it to show up in the Dialog box, not the console, how would I do that? Here is my code: javax.swing.JOptionPane.showMessageDialog(null, "\n-------"); for (int i = 0; i < 3; i++) { System.out.print("| "); for (int j = 0; j …

Im having arrayoutofbounds error on my code. [code] import java.io.*; class s{ public static void main(String args[]) throws IOException{ BufferedReader in=new BufferedReader(new InputStreamReader(System.in)); String[] a = {"X","C","O","M","P","U","T","E","R","S"}; System.out.println("Enter Price: "); String b = in.readLine(); for(int i=0;i<b.length();i++){ System.out.print(a[b.charAt(i)]); } } } [/code] what am i doing wrong here? The output should …

Hi I am programming in Unix. My task is really simple, but I don't know and where to debug this problem. My C program opens up the "ls" manual and makes an exact copy to a new file. However my program stops/freezes in the middle of read. (It works fine …

Hey guys, I wanted to know how can I code the game ball lines in Yahoo. It is a game very easy to understand and similar to tic tac toe but I just cant figure out anything as to how to start. Please help!! u can mail me on [email]chandanagrawal17@hotmail.com[/email] …

Hi guys I started to learn java and have a little problem\. When I try to compile my little program it says : assgn2.java:40: variable overnight might not have been initialized System.out.println(overnight); [CODE]How is that? The code: import java.io.*; public class assgn2 { public static void main(String[] args) throws IOException …

HI problem: Write the definition of a class Clock . The class has three instance variables: One of type int called hours , another of type boolean called isTicking , and the last one of type Integer called diff . You should also write a constructor that takes three parameters …

Hi All, When trying to change the bcackgroundImage of element useing javascript method style.backgroundImage="url(blue_link.gif) no errors found but the script can't find the image so what is the correct way to use the address of the image? Thanks very much in advance, Fred

How to learn in the most effective and efficient way. thank you

Hi Please help me with this problem Write the definition of a class Play containing: An instance variable counter of type int , initialized to 0. A method called increment that adds one to the instance variable counter . It does not accept parameters or return a value. A method …

Hey everyone, I was wondering if someone could explain to me the following bit of code. I understand != in logic but i dont know how to read it like this: [CODE] float y = 0.01, x = 0.005, z; z = 2 * x + (y != 0.001); [/CODE] …

I need help understanding why my code doesn't work while using number coordinates. I'm using a two dimensional array, I would like to post my code so you guys can check my errors, but I don't want anybody else to steal it, can anybody help?

My loop keeps looping...even after the condition is changed to false. Whether I enter a "y" or an "n" my loop still loops. I know it's never leaves the loop, because I never get the "do I get here" println. This is my first time with booleans...so maybe I'm doing …