32,205 Topics
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| | so this is my first homework ever in Java so heres what I need to do: 1)a project named LetterCounterExample(done) 2)a main class for the project of the same name as the project (done) 3)a class called LetterCounter (done) with the following members: i. field of type char named letter …  |
| | hi friends , How to establish a wired mesh network of our own in na lab. Also, i need a code for the project entitled "Heuristic algorithms for designing self-repairing protection trees in mesh networks". can any one help me out in this issue. i don't want simulation results. i …  |
| | hello friends. i would like to know if it is possible to run a class file using a java program itself.i mean a program tht would return the answer (run) the class file . |
| | Hello i am new to java and playing around with some scripts. I have three java files [B]Main.java[/B] [CODE]package snake; import javax.swing.*; import java.awt.*; public class Main{ public static void main(String[] args) { new board(); } }[/CODE] [B]board.java[/B] [CODE]package snake; import javax.swing.*; import java.awt.*; public class board extends JPanel { …  |
| | cant figure out why summaryCounter wont increment?? [CODE] if (source == calculateButton) { int summaryCounter = 1; double payment = Double.parseDouble(paymentTextField.getText()); double rate = Double.parseDouble(rateTextField.getText()); int years = (Integer)yearsComboBox.getSelectedItem(); DecimalFormat currency = new DecimalFormat(" ##,##0.00"); double futureValue; String s; int i; futureValueListModel.clear(); System.out.printf("\n Investment Summary Option %d \n Monthly Payment%,10.2f\n … |
| | I need to create a program that uses the String classes to read the suffix .txt and if true, return the sentence inputted, but if false return another sentence. I'm unsure of which boolean method I will need to use to execute this. Can anyone help me? Here is my … |
| | I am trying to make a simple chat program with the username in a certain font styles while the chat text in default. However, the results is both the username and the chat text have the same style... What did I go wrong?... I have also tried to look at … |
| | Hi everyone.. I wrote this program but I could not get the panels as what I arranged them.. also I don't know what's wrong with the scrollbar cuz I couldn't get the concept of it very well.. [CODE]import javax.swing.JFrame; import javax.swing.ImageIcon; import javax.swing.JPanel; import javax.swing.JButton; import javax.swing.JLabel; import javax.swing.JTextField; import … |
| | I need help with my JAVA homework, i need to make a java program about making a diagram, or diargrams of any kind graphic diagrams about any kind of data.  |
| | Hello. I am new to jave so please forgive my newbishness. I've used Netbeans IDE 6.0 to construct a GUI for my project. However I have ran into a few problems; 1. I cant seem to get a jButton to change the text of a jLabel. (im trying to get … |
| | Working no something for school and keep getting this. \\filesvrcls\2011\stawil\Java\midterm2.java:37: illegal start of expression public static int numsum(int a, int b) ^ \\filesvrcls\2011\stawil\Java\midterm2.java:60: class, interface, or enum expected } Process completed. [CODE]//*********************************************************** // midterm2.java Author: Will Stahl // // demonstrates Keyboard class //*********************************************************** public class midterm2 { public void main(String … |
| | Stuck again. could use some help from the community. [CODE]// This program accepts a height and a radius from the user // It uses a subroutine to calculate the volume of the cone // The formula is v = (3.14 * r * r * h)/3 public class Midterm { … |
| | Hi everyone ... I hope that all of u r OK... This is the second semester for me in JAVA .. I have an assignment to create a GUI using JAVA and I almost finish but the problem is the teacher asked to use any component that she didn't teach … |
 | can anyone explain what is a lightweight application?....Thanks |
| | I have tried many things obviously not everything or it would work, but i need your help. i have run out of ideas on how to fix this. im programming a fishing database where users enter the data and over time it collects and shows them were the type of … |
| | i created textpane and added undo manager like this... [code] final JTextPane jta; jta = new JTextPane(); jta.setEditable(true); final UndoManager manager = new UndoManager(); jta.getDocument().addUndoableEditListener(manager); [/code] and undo button was coded as [code] ImageIcon undo = new ImageIcon(getClass().getResource("images/undo.png")); final JButton bundo = new JButton(undo); bundo.setActionCommand("undo"); bundo.setToolTipText("undo"); ActionListener act_undo = new … |
| | Hey guys, I'm working on converting some existing Java Code over to C++, trying to use only built in standard libraries because the platform we are building on we won't be able to have any outside libraries, and it's been a while since I had to write "fancy" c++ code … |
| | C:\Documents and Settings\Elliona\Desktop\kirby>javac payrollsystem.java payrollsystem.java:166: '}' expected filter.close(); ^ 1 error here is my full code [CODE]import java.io.*; import java.util.*; public class payrollsystem{ public static void main(String args[]) throws Exception { File employee = new File("employee.txt"); File dtr = new File("dtr.txt"); PrintWriter pw = new PrintWriter(dtr); Scanner filter = new …  |
| | Hi, I'm learning aspectJ and was wondering how can i use the Plugin in Eclipse IDE ..i Googled alot but nothing helped me !! i downloaded the Plugin fom the eclipse site but can't find an aspectj project when i open eclipse and try a new project i'm supposed to … |
 | Hi there, I'm unable to run the demos java files. I followed the ways according to the prefuse tutorial. It says, 1) Go to "build" folder 2) Launch demo of interest java -cp prefuse.jar:demos.jar prefuse.demos.<name of demo here> and I inputted e.g. java -cp prefuse.jar:demos.jar prefuse.demos.TreeMap.java Please advice. [COLOR="Red"]*Screenshot Attached![/COLOR] |
| | Hi i have the next task. 5. Create a hierarchy Dog, Frog, Cat, Kitten, Tomcat and define suitable fields, properties, constructors and methods according to the following rules: All of these are Animals. Kittens and tomcats are cats. All animals are described by age, name and gender. Kittens can be …  |
| | Hi Guys, I posted earlier, and I figured it out after a few hours of playing around with it. Now, a new question arises. Is it possible to get the input from a JTextField and add it into a JComboBox via an array? The only thing stopping me from achieving … |
| | I had posted earlier requesting help with my code, but I quickly cleared up my issues. I am almost complete with my work, but I was just wondering if I could get some help on fixing some code which may cause my program to crash or not function properly. [CODE]public … |
| | Hi guys, I'd really appreciate it if someone could look over my code and tell me why my JComboBox isn't working. I've got 3 Classes, 2 for the GUI, one for the standalone which the array is contained in. [CODE]import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JFrame; import javax.swing.JComponent; import javax.swing.SwingUtilities; import … |
| | Hi.. I have created an application which is using the org.apache.log4j.Logger class for logging various INFO/DEBUG?ERROR messages.. The application is working fine, including logging, when Run As Java Application in the Eclipse IDE..(log file is generated successfully and entries too are created) Then I exported the project to a .jar … |
| | Hi all... I need some help in manipulation of the text files to read in a matrix text file. The format of the text file is as follows: <matrix> rows = 2 cols = 2 1 2 2 4 </matrix> I need to read in the text file and put … |
| | when i runnig my jsp page some type of error occurd(deployement error).i am running the page in netbean under glassfish server.how can i remove this error. |
| | Hi, I am creating a RPG Character Generator and I have a InputDialog box which asks the user to enter there characters name. I have a do while loop to check for if the user entered a character which allows runs through the code if the users enters a correct … |
| | Alright, so i have some code i have been working, i basically have done the skeleton and have looked through my Java book and scowered the web for some ideas. I'm stuck on a few thing. basically i am trying to write a program to break a code. I enter … |
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