3,978 Topics
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| | Hello, The following is a bouncing ball applet. When I do double buffering (variables, g1 and image), I still see the flickering . I would be grateful for any help. [CODE]import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.lang.Thread; public class Ball_Bounce extends JApplet implements Runnable { private Thread blueBall, redBall; … |
 | Here is my problem:- On my desktop, there is a folder called "Test." In Test, there is a folder called "toUse." In "toUse," there is a java source file called "Test" and three folders, namely "Print," "SwingFrame" and "TextFileWriter." The source file for "Test.":- [CODE]package Test.toUse; import Test.toUse.Print.Printer; public class … |
| | Just wondering if it is worth taking the time to learn the GUI packages, or do most developers use GUI designers? I am guessing the GUI designers are more often used by hobbyist, while the professional developers write the code?  |
| | Ok in this code the user has to type in their first and last name together otherwise it is invalid. I know I have to use some sort of java.lang.character but i do not know how to write it up. I know that it needs to be a part of … |
| | I have been searching high and low to find something remotely close to what I am trying to accomplish and have failed, miserably. I have read Oracle and tutorials, but have a hard time comprehending everything related to java. It is all so confusing. I would just be grateful for … |
| | Hey, My program is to add images to database using class GUI in java. Ang i can not get into a code that can insert into database I'am using this codes: import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.sql.*; import java.util.*; import javax.swing.event.TableModelEvent; import javax.swing.table.DefaultTableModel; import javax.swing.event.TableModelListener; public … |
| | Hello All, I'm in the process of making a GUI for a search engine, I have never coded a GUI before so just experimenting with user input in Textfields and also the use of ActionListeners and i'm having a slight problem. My code can pick up what the user has … |
| | By running following code and I got following output: At begining of default constructor, theApplet.isDisplayable()=false Start Init here... At begining of init(), theApplet.isDisplayable()=true At begining of constructor, theApplet.isDisplayable()=false End Init... Two questions: 1. Does anybody know why isDisplayable() is changed without do anything on it? 2. Why does the JApplet …  |
| | import java.awt.*; import javax.swing.*; public class RandomCircles extends Canvas{ private static int delay; private static int numCircles; private static int frameSize; public static Graphics g; public void paint(Graphics g){ } public static void main(String args[]){ frameSize = 800; numCircles = 1; delay = 5; RandomCircles circles = new RandomCircles(); JFrame …  |
| | I'm trying to create a SimpleBirthDay calculator.The requirement is "program must use a Scanner class and JOptionPane class to capture input from user".But i'm having a problem on getting the messagedialogbox to show the result.I found out that using the Scanner class we gonna need to insert the data into …  |
| | Hello, The following applet displays two .jpg files (ImageIcon objects - x and y) on a JPanel. I would like to display the second ImageIcon object (y) as transparent. Is that possible? Thank you! [CODE] import javax.swing.*; import java.awt.*; public class PicPanel extends JApplet { ImageIcon x, y; JPanel panel; … |
| | hey, im getting the exception [CODE]Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com.sun.media.jai.codec.SeekableStream at javax.media.jai.operator.BMPDescriptor.class$(BMPDescriptor.java:65) at javax.media.jai.operator.BMPDescriptor.<clinit>(BMPDescriptor.java:87) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:186) at javax.media.jai.RegistryFileParser.getInstance(RegistryFileParser.java:224) at javax.media.jai.RegistryFileParser.registerDescriptor(RegistryFileParser.java:360) at javax.media.jai.RegistryFileParser.parseFile(RegistryFileParser.java:295) at javax.media.jai.RegistryFileParser.loadOperationRegistry(RegistryFileParser.java:55) at javax.media.jai.OperationRegistry.initializeRegistry(OperationRegistry.java:369) at javax.media.jai.JAI.<clinit>(JAI.java:382) at cbir.window1.ColorHistogram.<init>(ColorHistogram.java:61) at cbir.window1.SearchWindow.jButton1ActionPerformed(SearchWindow.java:92) at cbir.window1.SearchWindow.access$000(SearchWindow.java:22) at cbir.window1.SearchWindow$1.actionPerformed(SearchWindow.java:47) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) … |
| | Im working on a Search index that searches through files that you manually add to the index, I'm having trouble with my GUI right now. Never used any java IDE before and its giving some unfamiliar suggestions. Netbeans wanted to make my main class abstract (but for no reason stopped) … |
| | [B]Ok so i have two classes a tester class and a class that has the variable of drawing an ellipse. The program prints out 4 faces with 4 different colors. I want to store the users choice of one of the four choices in an array. Can someone help me …  |
| | first i tried with system.out.. then i tried this: [CODE]import javax.swing.*; import java.awt.*; public class Ejer1 { public static void main(String [] args){ JTextArea graphs = new JTextArea(); String [] graph1 = {"*********"}; String [] graph2 = {"%s\n%s\n%s\n%s\n%s\n", "* *","* *","* *", "* *", "* *","*", "* *","* *","* *","* … |
| | I know alot of you guys get the same posts over and over about intro JavaII Classes, but I have tried to refrain from asking something that has already been solved and try learning on my own, but Im stumped. Im having trouble with this program, specifically at my calculation … |
| | run: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at com.sun.java.swing.plaf.nimbus.NimbusStyle.init(NimbusStyle.java:418) at com.sun.java.swing.plaf.nimbus.NimbusStyle.validate(NimbusStyle.java:359) at com.sun.java.swing.plaf.nimbus.NimbusStyle.getValues(NimbusStyle.java:927) at com.sun.java.swing.plaf.nimbus.NimbusStyle.getInsets(NimbusStyle.java:605) at javax.swing.plaf.synth.SynthStyle.installDefaults(SynthStyle.java:896) at javax.swing.plaf.synth.SynthLookAndFeel.updateStyle(SynthLookAndFeel.java:275) at javax.swing.plaf.synth.SynthLabelUI.updateStyle(SynthLabelUI.java:53) at javax.swing.plaf.synth.SynthLabelUI.propertyChange(SynthLabelUI.java:232) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276) at java.awt.Component.firePropertyChange(Component.java:8128) at java.awt.Component.setName(Component.java:935) at javax.swing.plaf.synth.SynthComboBoxUI$SynthComboBoxRenderer.getListCellRendererComponent(SynthComboBoxUI.java:409) at javax.swing.plaf.basic.BasicComboBoxUI.getDisplaySize(BasicComboBoxUI.java:1334) at javax.swing.plaf.basic.BasicComboBoxUI.getMinimumSize(BasicComboBoxUI.java:903) at javax.swing.plaf.basic.BasicComboBoxUI.getPreferredSize(BasicComboBoxUI.java:892) at javax.swing.JComponent.getPreferredSize(JComponent.java:1634) at javax.swing.GroupLayout$ComponentSpring.calculateNonlinkedPreferredSize(GroupLayout.java:2944) at javax.swing.GroupLayout$ComponentSpring.calculateNonlinkedMinimumSize(GroupLayout.java:2930) at javax.swing.GroupLayout$ComponentSpring.calculateMinimumSize(GroupLayout.java:2897) at javax.swing.GroupLayout$Spring.getMinimumSize(GroupLayout.java:1315) at javax.swing.GroupLayout$ComponentSpring.calculatePreferredSize(GroupLayout.java:2904) … |
| | Hi everyone, I am working on a problem as follows: Write a program that draws a circle with radius 100 and center (200, 200). Ask the user to specify the x- and y-coordinates of a point. Draw the point as a small circle. If the point lies inside the circle, … |
| | Can anyone assist me with the GUI for this program. I have tried several times will little luck. Here is the source code. Any help would be greatly appreciated. [CODE]import java.text.DecimalFormat; import javax.swing.JFrame; public class Inventory1 { public static void main(String[] args) { // Information on the Cds used Cd … |
| | Hi guys well what I want to do is play a video clip when my program starts. My menu has been set up to how I want it to look. I've researched how to do this but I cannot seem to find anything that I want. All I find is … |
 | Hey there guys, this is my first post here. Really pretty website I must say. I guess you'd expect a programming website to be well built. Haha. But anyways, I've been having some problems recently with a JFrame. I'm a beginner, but I usually do pretty well with resolving errors. … |
| | I have problems with choosing a line and to find a number or times specifif word repeats in that line? Can you help me with that? [CODE]import java.awt.*; import javax.swing.*; import java.awt.event.*; public class DefectInspector { private JFrame frame = new JFrame(); private JPanel p1,p2,p3,p4; private JMenuBar jmb; private JMenu … |
| | Having some difficulties getting this assignment to work. What, I'm having trouble completing is creating an conditional statement that calculates interest for the amount of years entered by the user at the interest rate they enter and displays it in a message box. This is my code so far: [CODE]import … |
| | Hello, When I run the following program, the applet window displays nothing. I will be grateful for any help. [CODE] import javax.swing.*; import java.awt.*; public class BoxPanel extends JPanel { private JTextField label1, label2; public BoxPanel() { setLayout(new BoxLayout(this, BoxLayout.X_AXIS)); label1 = new JTextField(20); label2 = new JTextField(20); add(label1); add(label2); … |
| | Hello, everybody, I am doing my Java homework and we used this line in class with no problems at, I have the code from the program we used in class and it works on my computer no problem. However, when I put it into my homework's code, it gives me … |
| | Hi folks. I'm new here so appologies if I'm not posting in the correct place. Here's my issue. I want to paint independent graphics on the same JPanel. I thought that I could create a method that paints my image(s) then call this in the constructor, but not sure what … |
| | Hi, I created a game in which players take turns entering their symbol by clicking on a box that is implemented on a grid window. I am having a hard time being able to check if the player has four symbols in a row diagonal or up or down or … |
| | I'm noob at GUI Swing. I have 2 questions. 1)I'm trying to implement a program that reads a text file, so I can use it to add multiple tabs to the program based on the amount of data in the text file. For example, text file have 3 names. I …  |
| | this my code import java.awt.*; import javax.swing.*; import java.awt.event.*; public class Panel extends JPanel implements ActionListener{ private JTextField weight,height, answer; private JButton calc, clear, exit; public Panel(){ this.setLayout(new GridLayout(2,1)); JPanel topPanel = new JPanel(); topPanel.add(new JLabel("WEIGHT(KG)")); topPanel.add(weight = new JTextField(5)); topPanel.add(new JLabel("HEIGHT(M)")); topPanel.add(height = new JTextField(5)); topPanel.add(new JLabel("BMI")); topPanel.add(answer =new … |
| | I'm making a maze game for a project in school, and as such i need to create boundaries for the game. not only for the outer walls but also inner ones of different and sometimes not perfect squares. I was just wondering how i should go about doing this? Is … |
| | the error goes like this: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order (custNo, dateOrder, totalPayable) VALUES ('', '2012/Feb/19 16:09:02', '0' at line 1 // HELP T_T. this project is to …  |
| | Here is my code:- [CODE]/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package wrie.and.read; /** * * @author Administrator */ import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.*; import javax.swing.*; public class WrieAndRead { JFrame frame; JTextField field; /** … |
| | If I close off the for loop it works but I need to get the output to show as a dialog box as well. I need the output to show inside a dialog box: Output should include count of numbers entered the sum of the numbers the average of the … |
| | I am trying to get the program's decimal to output in two decimal places after the decimal. Please advise. [CODE] // MilesPerGallon.java // Program designed by XY import javax.swing.JOptionPane; // Needed for JOptionPane. import java.text.DecimalFormat; // Keeping proper decimal format. public class MilesPerGallon { public static void main(String args[]) { … |
| | I don't know how to write code to exit for this program.someone please help me :( [CODE] import java.awt.*; import javax.swing.*; import java.awt.event.*; public class Panel extends JPanel implements ActionListener{ private JTextField height, weight, answer; private JButton calc, clear, exit; public Panel(){ this.setLayout(new GridLayout(2,1)); JPanel topPanel = new JPanel(); topPanel.add(new … |
| | So my code is suppose to get information from the user and figure out how much funding the two professors get. My code runs twice but for some reason only the last entry is saved and outputted and my formula for calculating the new funding only outputs zero for some … |
| | I've been programming in Java for a few years now, and I've always wanted to be able to run my programs on computers without the JDK installed. I've been trying to make an executable .jar file, and it seems to work on my computer(the one with JDK installed). However, as … |
| | [CODE] import javax.swing.JOptionPane; public class Finance { public static void main(String[]args) { boolean Access = false; String studentName = JOptionPane.showInputDialog(null, "Enter in your name: "); //String current = JOptionPane.showInputDialog(null, "Enter your password: "); //double currentBalance = Double.parseDouble(current); Account newAccount = new Account(studentName); //Gains access to Account class JOptionPane.showMessageDialog(null, newAccount.toString()); } … |
| | Can anyone please help me out in removing this error Exception in thread "main" java.lang.NullPointerException at java.awt.Container.addImpl(Container.java:1045) at java.awt.Container.add(Container.java:365) at Client.<init>(Client.java:33) at Client.main(Client.java:17) [CODE=java] import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; import java.net.*; public class Client { JFrame frame1; JList list; JList list1; JTextField tf; JButton send; JButton lout; … |
 | i want to restart my java swing application when user click on restart button. how to do it using java. |
| | I'm completely stuck on how to organize the layout of this GUI assignment (see:attached picture) I've got the create panel part done, but I can't get anything to work properly for this panel. I've done the code up to the updatePanel method and it compiles but nothing displays. I've tried … |
 | Okay so I am making a 2d array of JToggleButtons. I got the action listener up and going, but I have no way to tell which button is which. If I click one, all it returns is something like [quote]javax.swing.JToggleButton[,59,58,19x14,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@53343ed0,flags=296,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=2,left=14,bottom=2,right=14],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=false,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=] [/quote] Is there anyway to stick some sort of item … |
| | Ihave written the below pieces of code, but i am not able to solve the compilation error here as it shows the error as ArrayOutOfBoundsException error. so please tell me hw to remove the error and please bring the necessary changes. [CODE] import java.util.*; public class Cipher { private int … |
| | i am doing the coding of my minor project and for that i need to convert an input text(String) to an int type as i am inputting the data through swing component, panel as text(string). But internally i need to process that as int. so please tell me how can … |
| | can someone help me how how can catch CTRL C and print it out then stop the program? Thanks [CODE]/** * 218-102 Lab 7 * TestCircle.java * * @author JKang & JLeone * */ import java.util.*; import java.awt.event.*; import javax.swing.*; import java.awt.*; public class TestCircleB { public static void main(String … |
| | My professor told me these things are wrong:1) For getting the "#" sign in your board, you need to call the createTicTacToeBoard() method to create the board. The returning type of the method is char[][] createTicTacToeBoard() not the string, and you don't need to pass any array into this method …  |
| | I need the program to end the loop after player1 has won but the program continues to run until the loop is done i was wondering i know i need a break statement but i do not know where to put statement at.Any help is appreciated. import javax.swing.JOptionPane; public class … |
| | [CODE]import java.awt.Component; import java.awt.Container; import java.awt.Dimension; import java.awt.Font; import java.awt.Point; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.PrintStream; import java.net.Socket; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.UIManager; public class PeerLogin extends JFrame { private JLabel …  |
| | Hello, The following program has three JPanels - one to hold the image, one for the JComboBox and the last one for holding the JLabel, JTextArea and JButton. Once a selection is made in the JComboBox, the user will enter text in the textarea and press the button. The button … |
| | Hi All; Im just making a simple Desktop app. Ive got a need so that the user could be able to add data to the table dynamically. Ive done implementing the table and also code for adding rows. Issue is after i add the row it is not displayng in … |
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