32,199 Topics
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| | [CODE]public class A extends Applet implements MouseListener,MouseMotionListener{ public void init(){ addMouseListener(this); addMouseMotionListener(this); } }[/CODE] please tell me that what "this" means here!! actually, what argument addMouselistener() function want ? i have seen API, in that it is given "MouseListener e", how it is true here ?? tell me please!! here … |
| | hi can someone explain this small code how its work : [CODE]/** * @(#)Output.java * * * @author * @version 1.00 2011/12/24 */ public class Output { public static int rec(int x, int n) { if (n < 0) { System.out.println("Illegal argument"); System.exit(0); } if (n > 0) return ( … |
| | my code should print numbers in reverse array its not have error but the lest for statement its not print array in reverse order [CODE] import java .util.Scanner; public class R { public static void main (String [] args){ Scanner input=new Scanner(System.in); int size; System.out.println("Size "); size=input.nextInt(); int [] array=new … |
| | can help me in this code i made it to check if a given number is plindrom or not [CODE] import java .util.Scanner; public class PNumber { public static void main(String[] args) { System.out.println("Enter size "); Scanner input = new Scanner(System.in); int size = input.nextInt(); int [] array=new int [size]; …  |
| | Hi, I have a string which contains XML. I want to remove its first line and save it back to String. How can I do that? Thanks  |
| | Hi All [CODE]package apple; import java.io.IOException; import java.util.Scanner; /** * * @author Mates */ public class Apple { private double sample(){ double total; int a=120; Scanner as=new Scanner(System.in); System.out.println("enter the value"); double i=as.nextDouble(); total=i*a; System.out.println("apple"+i+"kg"+" "+total); [COLOR="red"]return total;[/COLOR] } public double sample1(){ int b=50; double total1; System.out.println("enter the value of … |
| | hi........ i'm new to java...... i m running a java program on cmd prompt,i want to compile but i m getting error like [B]'javac' is not recognised as internal and external command ,operable program [/B] plzzzzzzzzzzz help me:)  |
| | Hi, I've been trying to learn how to do collision between a sprite and a tile for a while, so I've been testing this point collision I found from a Java book. But for some reason, the tile's images can't be drawn onto the screen. Any Ideas or thoughts to … |
| | I am writing a program using J2ME and my goal is to count how many times each character appears in a string. I am not very good at java so the way i see i should do this is create 2 arrays. First array is used to hold characters. Second … |
| | Hi every body i have a Question How to find lowest number? this my code is there any mistake ? [CODE] import java.util.Scanner; public class MaxNumber { public static void main(String[] args) { Scanner input = new Scanner(System.in); int min = 0 ; int count=1; System.out.println("Enter a number : "); … |
| | When i make 2 object for a same class, and then i make one object equal to another, then changes made to one object affect another object also, then when i assign one object as "null" then why the change is not made to another object as well? Here is … |
| | So. I've written my first little graphics game (using the Graphics API) and would like to know two things: a) What's wrong with my collision detection? (Could you point me in the right direction?) b) What am I doing that is not the best way. Is there a better way …  |
| | plz i try to make factorial program but i have mistake [CODE] import java .util.Scanner; public class Factorialrec { int fact(int n) { int result; if ( n ==1) return 1; result = fact (n-1) * n; return result; } } public static void main(String [] args){ Scanner input = … |
| | Assignment :: TwoLargestElements Complete the following program so that it computes and writes out the two largest elements in the array. So far I have this...and it just gets the largest number for both outputs..I need to change it so I get both the largest and second largest. Any help … |
| | This may be old error but I stuck here.. I created java database applet for oracle database. I am going to put this applet in Local Network. My applet works fine in Eclipse and Netbeans but when I run through 'appletviewer' it showing an error : [ICODE]Error e java.security.AccessControlException: access … |
| | Hi there, I started learning Java this year, and I must say that I am surprised how good I have gotten at it. I still have a bunch to learn, but I am able to make my own programs that does a lot of different stuff. I am taking AP … |
 | Hey there, I have already built my system to log in but I am having difficulties in proceeding with the new panel I want to show after log in is successful. This is how I'm doing it: I have built different panels for each use case of my app. So … |
| | Hello, I'm writing a program that creates repetitions of a section of a word. I'm trying to get the program to evaluate the data i send to the tester method, and return true or false depending on whether or not it is a valid input. [CODE] import java.util.Scanner; public class … |
| | Hi. I am making a python program that automatically enters information into a form on a website. I looked at a module called mechanize at first but then I realized that it didn't support javascript. Is there any way to take a piece of information and insert it into a … |
| | [CODE]@Local public interface EJBA{ // declares a method 'validate' } @Stateless public class EJBABean implements EJBA{ // implements the method 'validate' } class Model{ @EJB private EJBA ejbA; public void doSomething(){ ejbA.validate(); } } [/CODE] Now, if I do the following from the execute method of a Struts 1.2 action … |
| | I need to parse this document with email ids and convert them to a csv file... source. [CODE]xxxx@xxx.com; hello@gmail.com; John (john@hotmail.com);[/CODE] and so on.....lots of emails are there :D output: [CODE]NickName, Email ,xxxx@xxx.com ,hello@gmail.com John,john@hotmail.com[/CODE] Please help me. This aint a homework. Im trying to recover my emails... hehe. I … |
| | [CODE]import javax.swing.*; import java.awt.event.*; import java.awt.*; public class Login extends JFrame{ JButton SUBMIT; JPanel panel; JLabel label1, label2; public static int accessGrant = 1; JTextField username; JPasswordField pw; public Login() { label1 = new JLabel(); label1.setText("Username: "); username = new JTextField(15); label2 = new JLabel(); label2.setText("Password: "); pw = new … |
| | hi, is it possible to have two different version of java on linux centos5 currently it is running 1.6.0 - which i would like to keep it that way sinse i have red5 but i also need 1.4 for a gaming server ES gaming server is asking to use at … |
| | [CODE]ImageIcon tenP1 = new ImageIcon("10p.gif"); tenP = new JButton("", tenP1); ImageIcon twentyP1 = new ImageIcon("20p.gif"); twentyP = new JButton("", twentyP1); ImageIcon fiftyP1 = new ImageIcon("50p.gif"); fiftyP = new JButton("", fiftyP1); ImageIcon pound = new ImageIcon("pound.gif"); onePound = new JButton("", pound); ImageIcon twopound = new ImageIcon("twopound.gif"); twoPound = new JButton("", twopound);[/CODE] … |
| | Hi :) I am trying to make a program that will find the first x perfect squares. I have done and redone this many times, but it never works. So basically, it needs to do two things: check if y is a perfect square. If it is, it needs to … |
| | First of all, I'm new to GUI so I may have made some terrible mistakes.. right, so I have a two dimensional array of buttons and I need to identify which button in the array is clicked, hovered over, and hovered off. For now I just want my program to … |
| | Hi there guys. I am soon halfway through AP computer science, where we learn Java. Right, now, I'm doing some extra credit programs, both for fun, and to learn this stuff better. However, I got stuck on a few of them, and I really need some advise. I have already …  |
| | Hello Everyone, I am using apache POI 3.7. I am trying to replace the value of a table column in a word document (docx). However, what I have done is it keeps appending the value of the current value in the document. But if a table column value is null, … |
| | i am trying to make this shape using java ********************** ********************** ***************** *************** ************ *************** ****************** i have TRIED at the bottom as u can see but i am unable to get this shape i am confused [code]public class courseforuni { public static void main (String [] args) { int … |
| | Hello! I'm trying to make a class,but an error comes up.I have also an another class named Ticket.Thanks for your help! [CODE]import java.util.*; public class TicketPool{ ArrayList box= new ArrayList(); public void AddTickets () { box .add(new Ticket ()); } public void DisplayTickets (){ for (int i=0;i<box.size();i++){ System.out.println(box.get(i)); } } … |
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