3,978 Topics
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| | Will someone please tell me why I keep getting my custom file not found exception? The file is spelled correctly and is in the same directory of my java file. I am programming on Eclipse on Mac OS X. Here is my source: // Dillon Sheffield // Lab 10a // … |
 | I have a GUI in which has a container for a JTable called 'listTable'. I want to populate the JTable with data stored in a linked list, using the AbstractTableModel. Basically, I have a LinkedList stored in Processing.java. It contains all the data retrieved from a text file. I created …  |
| | Would anyone happen to know also if there is some predefined swing box for prompting the user to decided whether or not to overwrite an exhisting file? you know the basic "This file already exists, would you like to overwrite it?" |
 | I have made a HRMS (Human Resource management System) using NetBeans 6.5 and for database MySQL 5 The project is completed and running fine ( great) without any problem when i run it in NetBeans using Run Main Project Button. Then i 'Clean and Build the project' and get a … |
| | So my assignment is to design a simple GUI calculator using the stack data structure to perform additions, subtractions, multiplications and divisions. The calculator window should have at least two panels - one for display and the other for buttons (0 - 9, . , +, -, X, /, =, … |
| | I need help with this code. I get zero values, how can I stop generating numbers when I hit the target number? Thanks import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; import java.util.concurrent.locks.ReentrantLock; /** * @author Marin */ public class TargetFinder extends JFrame { private static final long serialVersionUID = … |
| | So the program is supposed to display the box like this (for LIST ALL TRANSACTIONS) : List all transactions: ID Type Amount 0 check 50.00 1 svr.chg 5.15 2 deposit 40.00 3 svr.chg 0.10 the box displays other transactions; it saves the old and new ones and display them one … |
| | Hi all, I need to write an algorithm that can find intersections, dead-ends, and turns within a maze. Below is the code I currently have. You're welcome to read through it, though I'm not sure if it will help in any way. The basic information: - Maze image file is … |
 | hello there please help me, I have a problem with this program, i confused about how to make this program run well, this is the lish of program package guipert2; import java.awt.BorderLayout; import java.awt.Color; import java.util.ArrayList; import java.util.List; import javax.swing.DefaultListModel; import javax.swing.JList; import javax.swing.JOptionPane; public class ContohList extends javax.swing.JFrame { … |
| | I have used snippets of code from various sources to compile the following code: import java.awt.*; import java.awt.image.BufferedImage; import java.io.*; import javax.imageio.ImageIO; import javax.swing.JFrame; import java.util.Calendar; public class ShowImage extends Panel { static Calendar cal = Calendar.getInstance(); //gets system time BufferedImage image; private static final String holidaysimages[] = { //declares … |
| | Hi, I recently decided to have another go at learning some programming, and decided to make some sort of 2d gameboard useable for stuff like Chess and Othello. I ran into a problem that I ran into last time I tried learning programming as well, and it has to do … |
| | Man, my *rookie* status os showing on this one... For the life of me, I cannot determine why my graphics panel section is not working to correctly display my Pie Chart.... I have the output broken down, and the variables exist... It runs looking for Annuities.csv in the C:\temp folder... … |
| | I have a program that's supposed to interact with a databse but I keep getting a NullPOinterException. I know it means that something is set to null. But how to change them from null is my main problem import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; /* * To change … |
| | Hello, I am a java learner and have just started learing java by follwing the online tutorials. I am a computer science student and as a part of our assisgnment, I have to design a online CHat system in java. TBH, I have no clue of what to learn and …  |
| | Why do I get a Null Pointer in my test whenever I run it from the ant?My Test class Is: package com.MySelf.exchangerate.exchange; import static org.junit.Assert.assertEquals; import org.apache.log4j.BasicConfigurator; import org.apache.log4j.Logger; import junit.framework.Test; import com.MySelf.exchangerate.application.ExchangeRateApplication; import junit.framework.TestSuite; public class ExchangeRateApplicationTestCase extends AbstractTestCase{ public static final Logger logger=Logger.getLogger(ExchangeRateApplicationTestCase.class); private static final double delta … |
| | Hello. I am having a slight problem with layout in my program. The Textfield doesn't seem to be aligned with the Message Label. The program is a GUI MPG calculator. It's supposed to calculate the car's mileage. It's supposed to let the user enter the number of gallons of gas … |
 | When I run my bucky.java, the background color is black and not pink. Why? Here is my bucky.java:- import javax.swing.*; import java.awt.*; /** * Created by IntelliJ IDEA. * User: Administrator * Date: 3/30/12 * Time: 3:59 PM * To change this template use File | Settings | File Templates. … |
 | # Java Conversion Program # Hi everyone reading this. I appreciate you taking the time to even look at my problem. I'm designing a converter app in Java to convert units, km to ms-1, degrees celsius to fahrenheit etc etc.. I have built a basic Gui using the WindowBuilder plugin … |
| | Im working on applying a schema to an xml document but my editor (exchanger xml) is giving me some errors I can't figure out Ln 35 Col 67 - s4s-elt-invalid-content.1: The content of '#AnonType_inventory' is invalid. Element 'element' is invalid, misplaced, or occurs too often. Ln 16 Col 58 - … |
| | import javax.swing.JOptionPane; public class Login{ public static void main(String[] args){ String username = JOptionPane.showInputDialog("What is the desired username?"); String password = JOptionPane.showInputDialog("What is the desired password?"); boolean unlock=false; while(unlock==false){ String usernameinput = JOptionPane.showInputDialog("What is the username?"); if(username==usernameinput){ String passwordinput = JOptionPane.showInputDialog("What is the password?"); if(passwordinput==password){ System.out.println("access granted"); unlock=true; }else{ System.out.println("denied"); … |
| | Hey guys I need to hand in this assingment and actually made an account for this as I know this is one of the best forums so far that I have came across about programing, so it would be awesome if someone could help me out with this. So first …  |
| | Hey guys, sorry I didn't post for long. Now here I am, with a new issue. Here is my code:- import java.applet.*; import java.awt.*; import javax.swing.JFrame; public class HelloWorld extends JFrame { public HelloWorld() { setVisible(true); setResizable(false); setSize(300, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public void paint (Graphics g) { g.drawString("Hello World!", 50, …  |
 | at javax.swing.table.DefaultTableModel.setValueAt(Unknown Source) at javax.swing.JTable.setValueAt(Unknown Source) I am setting a table row manually.... its just for checking purpose , i have 10 rows and 10 columns but still i am getting this error, please help me to resolve it.... |
| | I have face some problem with java swing component.I need to show at least 200 data in a jtable.But here is the limitation in Jtable to show at most 100 data.How can I solve this problem?? I am using mySQL data base for handling data.So it is too difficult to … |
| | Hello everyone, I'm new to java and I'm working on a assignment, but I couldn't compile the BookTest.java. Here's my Book.java package question_1; public class Book { private String title; // Title of the book private String author; // Author of book : private String isbn; // International Standard Book … |
| | I am a student and am pretty new with java. I'm trying to write a basic pacman applet for a class my problem is i have the code written to draw the maze and the pacman but when i run the applet all I am getting is the black background … |
| | Hi there, when calling a method from another class I get the following error message: ** Exception in thread "main" java.lang.NullPointerException at TextAnalyser.main(TextAnalyser.java:23) ** My two classes: import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.lang.String.*; import java.util.*; public class TextAnalyser { static Tokeniser aTokeniser; public TextAnalyser(Tokeniser aTokeniser) { } public … |
 | Hey guys I need help with in my code... I need to add a method that checks wheather the weather attributes are consistant or not. thanks for the help heres my code... import javax.swing.JOptionPane; public class Week_eight_number_31 { private int DefaultFarenheit = 70; private String DefaultSky = "Sunny"; public Week_eight_number_31 … |
 | Hey all, I have been wanting to make a cool game in jave such as a fighting game starting off simple with drwing stick figures :). But i was wondering why there are so many java games created in Japplet why not use swing- i know there are games out … |
 | > Quoted Text Here Hi, anyone can help pass values of JRadioButton to another JFrame? For example, if "twoway" Jradiobutton is selected, its value (a char i.e. "2-way face foundation") will be shown in another JFrame. Thanks in advanced.. Code blocks are created by indenting at least 4 spaces ... … |
| | I have everything added to the JFrame using absolute positioning. It works fine but when it repaints the pie chart it also repaints the last JNumericField and button at the the very top left of the screen. At postion 0, 0 I presume PieChartFrame.java import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; … |
| | I am working on a java application that will display an image and play a sound. It finds the current month and displays the appropriate information. Below is the code that I have been testing (that's why santa is in april) it will not work when trying to play wav … |
| | Is as way test out swing components without having to rely on Thread.sleep() to make sure that the components have realized completely. This problem with this approach is that it becomes difficult to guess how long it would take for components to realize under different environments of execution like vnc …  |
| | Hey all, I'm working on a login screen and have an MSAccess database that stores the userName and password. I am currently using JtextField and String to access the username and password located in the MSAccess database, but now I want to hide the password when it is being typed … |
| | I am making a java gui keyboard as practice The keyboard itself works well and is made out of JButtons It changes colors when a certain key is pressed and then releseased I have two questions: Is there a simple way to listen for tab being pressed? Is there a … |
| | Hello. I'm new to Java. I created 4 CHOICE that has 9 numbers. It should convert the selected item into words in the text area. I don't have any idea how to do it. Please Help. Here's my code. import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; public class Final1 … |
| | I am cresting a digital clock and I am having troubles updating the interface please can someone help me with this. I have the code below: ********/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package Interface; /** * * … |
| | I made a custom JTextField that only accepts numbers into the textfield. I used insertString to do this. Tt works pretty well except it allows oddly only the letter e. It accept e only after a number is inputted first. And once e has been entered the textfield does not … |
| | Hi all, I have a slight problem when checking if a "Token" is in my StringTokenizer string. My code: import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.lang.String.*; import java.util.*; public class TextAnalyser { public static void main( String args ) { StringTokenizer stringTokenizer = new StringTokenizer("You are tokenizing string"); System.out.println("The … |
| | Hi. I have problem adding text box after each label ID Code, Weight, Rate, Price Charge, it does not show when i run the code. Also, how do i add the $ sign when display the price charge. the ouput should be like this: Fee Calculator ID Code: [Text Box] …  |
| | This was the assignment: Write a class with methods to help you balance your checking account(an object class-main method is not in this class). The CheckingAccount Class should have at least two instance variables: the balance and the total service charges, along with methods to get and set each instance … |
| | In one class i have a back button(java Swing)...i want when i click this button it will go to another class and close the current class...however, when i use System.exit(0)...it closes both 2 class...if i use setVisible(false) for the current class...that class still running...how can i close the current and … |
| | Hi everybody! I made an applet, and was trying to put it in web page. When I run my applet by itself it works fine, but when I'm trying to run it thrue the web page it doesn't work at all. I mean I have just grey box (like a … |
 | I am trying to create an oval shape using Netbeans but the oval shape never draws itself. Here is the code : /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package learn; import java.awt.Color; import java.awt.Graphics; import javax.swing.JPanel; /** … |
| | I have these 2 classes: [CODE]import javax.swing.JOptionPane; public class Theatre2D { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub // declares an array of integers int[][] myTheatre2D; // allocates memory for 2*10 integers myTheatre2D = new int[2][10]; myTheatre2D[0][0] = 20; myTheatre2D[0][1] = … |
| | Hey all, I have been busy building my own chess game and as of now im a bit stomped. Well you see i have an object Board, this object will be initiated and it will create a new frame with various panels one of them being the panel which holds … |
| | guys, I need help in swing framework... what method is being used when you have to pressed exit button first before opening other frames? It's like an equivalent of showDialog() from C#.net. |
| | I receive error at camera.Camera.<init>(Camera.java:19) at camera.Camera.init(Camera.java:32) at camera.Camera.<init>(Camera.java:21) at camera.Camera.init(Camera.java:32) at camera.Camera.<init>(Camera.java:21) at camera.Camera.init(Camera.java:32) at camera.Camera.<init>(Camera.java:21) at camera.Camera.init(Camera.jav and continues. Please help, last day [CODE]package camera; import javax.swing.*; import java.awt.event.*; import java.awt.event.ActionListener; /** * * @author FDR */ public final class Camera extends JFrame{ private JTextArea txt; private Camera … |
| | Given a UML diagram of: Oval ------- ------- +draw (g:Graphics, x:int, y:int) +toString(): String I have currently [CODE]import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Oval extends Shape { public Oval (Color color, boolean isFilled, int width) { super (color, isFilled, width); } public void draw (Graphics g, int x, … |
| | so heres my code [CODE] import java.awt.*; import java.text.*; import java.util.*; import java.util.List; // Explicit import required import javax.swing.*; public class Sort { public static void main(String args[]) { Runnable runner = new Runnable() { public void run() { String words[] = {"Sean", "Beth", "Ryan", "Bree", "Jim", "Bob"}; List list … |
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