32,204 Topics
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| | [CODE]class Mammal { String name = "furry"; String makeNoise() { return "generic noise";} } class Zebra extends Mammal { String name = "stripes"; String makeNoise() { return "bray";} } public class Zoo { public static void main (String[] args) { new Zoo().go();} void go() { Mammal m = new Zebra(); … |
| | Hi i am looking for following output.I am just getting 0 for a,b,c,d,f. total no of grades Number of A's Number of B Numbers of C Number of D number of F [CODE]import java.util.Scanner; public class ExamScores { public static void main (String[]args) { String a; int count= 0; int … |
| | I'm finding it difficult to implement an in-place algorithm for bucket sort. The question and my attempt are below. Can anyone give me a hint or an explanation of how I can implement in-place bucket sort? Q: Use the bucket sort idea to sort in-place an array of n records … |
| | Hello forum, I want to write a simple code of two dices rolling for two players. The players can roll as many times as they want per turn. If they are matching numbers, the total is zero. If a person passes, it is passed on to the next player. Please … |
| | [CODE]import java.util.Scanner; import java.util.Random; public class test { public static void main(String[] args) { Random rand= new Random(); // being able to use random object int[][] array = new int[3][9]; // print array in rectangular form for (int i=0; i<array.length; i++) { for (int j=0; j<array[i].length; j++) { int k … |
| | i have jst started programing in java m beginer. m making gui which contains a two radio button a slider and a text message. although its compiling coreectly but it doesnot display any thing [CODE]import java.awt.*; import javax.swing.*; import java.awt.event.*; public class GUI { JFrame frame; JLabel coord; JRadioButton Man=new … |
| | Hi, I don't really have a programming issue rather a artistic issue. Look at the following code of the front view an unfinished building. I'm trying to add a side view to the right or left. I just can wrap my mind on how it is supposed to look. [CODE] … |
| | i m a begginer m making a GUI which consist of a slider and 2 radio button and a text message. i have not added the functionality in it yet. but its not displaying GUI it completes successfuly but at runing time it gives error Exception in thread "main" java.lang.IllegalArgumentException: … |
| | boolean robotsAlive[]; int robotCount; public int deadRobots (int robotCount, boolean robotsAlive[]) { int deadRobots = 0; boolean robotsALive = true; for( int i = 1; i > robotCount; i++ )//a for loop to loop through the array { //inside the for loop if( robotsALive[] == false ) //and if statment …  |
| | how can I use JList object in place of JFilechooser show the directory content.any tips or somthing to help me understand this will be apreciated. [CODE]// Display directory content in a JTextArea object. // The user selects a directory via JFileChooser object. import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; … |
| | Hey everyone. I have recently decided to try and learn how to use java Sockets for client/server communication, as well as swing and threads, etc. and have (pretty much) completed a small client server application. The application is basically a syntax-highlighting notepad, a client swing GUI which connects to a … |
| | Can you help me how to convert this for loop to Enhanced For-Loop? Thanks [CODE] for (int x = 0; x < grade.length; ++x) if (grade[x]==grade1) { gradesum = score [x] * testscore1; }[/CODE] |
| | Hey, Im new to programming and I would like some help , and just to introduce myself to the community, Im looking to learn java, or whatever is recommended for beginners. All the experience i've had is making a Hello world app, some compiling , and etc. |
| | Hey guys, I have this HW for school for Java but I just can't seem to figure it out. I know I have to use a for loop for it but I just can't seem to figure out everything else. Thanks :D public int factorial(int n) { } |
| | I'm working on a program that calculates the day of the week for dates in history or the future. I have the calculation part correctly but there are 4 errors left that I do not know how to fix. Any help will be greatly appreciated! Thanks [CODE]import java.util.Scanner; public class … |
| | I am having trouble in sorting out what i need to do for my first assignment. open a text file, with colon char, 1 student number: 2 student name: 3 5 fields with marks; a algorithms: b mathematics: c java: d C++: e scripting open txt file read open txt … |
| | i use speech synthesis javax.speech.synthesis for the first time my program is simple that's say string "hello world" but that not work and give me that Exception: java.lang.NullPointerException at soundreal.HelloWorld.main(HelloWorld.java:20) and i don't know what that mean help plz [CODE] package soundreal; import javax.speech.*; import javax.speech.synthesis.*; import java.util.Locale; public class …  |
| | Hi i m creating simple rpn calculator.I m getting following errors. C:\Users\Hamza\Pictures\CalcGUIPanel.java:63: array required, but java.lang.String found cStack.push(buttonOrder[i]); ^ C:\Users\Hamza\Pictures\CalcGUIPanel.java:213: currentValue is already defined in actionPerformed(java.awt.event.ActionEvent) BigInteger currentValue = new BigInteger(cStack.pop()); ^ C:\Users\Hamza\Pictures\CalcGUIPanel.java:215: operator + cannot be applied to java.math.BigInteger,java.math.BigInteger resultValue += currentValue; ^ C:\Users\Hamza\Pictures\CalcGUIPanel.java:223: currentValue is already defined in … |
| | Is it possible to write to an existing text file in a jar. I managed to read from it with getResource() but I am stuck trying to write to it, it gives me a file not found exception. Thanks |
 | I am working on a moving object. so I created a menu bar for size and speed, the idea behind it is that each time small, big or medium is clicked it should change the size and same also applies to the speed but when implement the action listener its … |
| | [CODE] statsButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ //Return the string "stats" to gameLoop() as cmd } }); [/CODE] [CODE] public void gameLoop(){ Scanner lineScanner = new Scanner(System.in); cmd = ""; System.out.print(getBoard().printBoard(false)); while (!cmd.equals("quit")) { System.out.print(">"); Scanner wordScanner = new Scanner(lineScanner.nextLine()); if (wordScanner.hasNext()) { cmd = wordScanner.next(); if (cmd.equals("board")) { … |
| | I have posted one code. please help me i can't get msg at mouse pointer. please tell me how can i get label at the co-ordinates where the event has taken place. also tell what is the problem with code..it gives output after minimizing and maximizing. hope for reply. Thank … |
| | Complete method called characterCount below so that it returns the number of times the character ch appears in the string s. [CODE] public int characterCount(String s, char ch) { } [/CODE] I know that I have to use a for loop and use s.length() as a stopping point. Other than … |
| | I am a begining software engineer in college and have been stumped by a small problem. The assignment is to "encrypt" any text entered. All we have to do is make capitals lower case and vice versa, additionally we have to make a's z's, b's y's and so on. //import … |
| | Hi all, I have a main GUI class as seen here: [CODE] import java.awt.*; import javax.swing.*; import javax.swing.border.*; /* * Class is to communicate with various other classes in the program to * create a roster for user based on their selection on GUI. */ public class MainGUI extends JFrame … |
| | how to write the math function f(x) with Java where f(x) = y |
| | hi could anyone tell me how to get bit pattern of a negetive number. For example bit pattern of -1357 is: 11111111111111111111101010110011 and bit pattern of 1357 is: 00000000000000000000010101001101 but how???? |
| | Hi, I'm making an app that uses Collections. Everything went ok until now, what I've done: I've got a class that initializes 3 strings, those strings are private, so I have made 6 public functions that sets or reads values from those strings. Next I've made a hashmap, keys are … |
| | I am trying to publish my ear and war modules into Oracle weblogic portal 10.3.0.0 server using workshop. I am using pointbase DB. But publishing failed since I was getting the following error, weblogic.application.ModuleException: Exception preparing module: EJBModule(netuix.jar)Unable to deploy EJB: ProxyPagePersistenceManager from netuix.jar: Exception while attempting to deploy Security … |
 | Guys,i want a small help from you.I have a created a database in MS Access and now i want to connect it to with Java Application by using ODBC Administartor.But when opens it,it doesn't show any driver for MS Access DBs.Do u guys know any driver for that.I'm using Windows … |
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