32,207 Topics
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| | Hey, this is a continuation of my image editing program, I am trying to perform intensity thresholding with an intelligent threshold. My code thus far: [CODE] private void thresholdMenuItemActionPerformed(java.awt.event.ActionEvent evt) { BufferedImage inputImage = getImage(); setUndoImage(inputImage); BufferedImage thresholdImage = new BufferedImage(inputImage.getWidth(), inputImage.getHeight(), inputImage.getType()); int threshold = 0; int tnew = … |
| | Hi people, I am new to Java but have experience programming in C/C++/C#. I wanted to learn Java SE 6 first before moving to Java EE 6. After making some research online for appropriate Java SE 6 books, I found that these are appropriate for me to get an excellent …  |
| | Hello everyone, After I created a JTable with: JTable MaTable =new JTable(); MaTable.setModel(new DefaultTableModel(new Object [N][1], new String [1])); I wanted to add new columns to it, so I did this: TableColumn Colonne = new TableColumn(); MaTable.addColumn(Colonne); The operation did worked, even the new columns displayed correctly, but, when I … |
| | i have button in javascript, when i click ,it calls a CGI perl script and returns a download popup to me. Prob--> When javascript calling the script it starts a new thread redirecting to perl script and end. So i m not getting any action or response inside javascript. What …  |
| | Hi, I may get more than 1000 lines in a file. Each line ends with a new line character. Sometimes the file may have 4 lines. Other lines will have characters such as , : alone. I'm storing each line in the database if it is a valid line and …  |
| | How to check , whether jre is available on system or not by using javascript? |
| | I'm very new to Java, and I just have a few questions that I can't seem to clear up even with some research. What does it mean to override a method? Also what is the difference between a static and non-static method?  |
| | I am having problems getting my code to work properly. I cannot seem to get the results to print and get this error message "IsMemberMethod.java:59: isMember(int[]) in IsMemberMethod cannot be applied to () System.out.println(searchValue + ": " + isMember());", but I cannot seem to work around it. Also, not sure … |
| | [B]This is my code so far......[/B] [CODE] import java.applet.Applet; import java.awt.*; import javax.swing.JOptionPane; public class HelloWorld extends Applet { Font myFont = new Font ("Times Roman", Font.BOLD, 25); public void paint (Graphics g) { g.setFont (myFont); g.setColor (Color.BLUE); g.drawString ("My Name" , 20, 30); String first; first = JOptionPane.showInputDialog (null, …  |
| | I recently wrote some code from a code snippet from my java programming textbook as a way to pass the time, and since it works fine in console, I assumed that it will work fine in a GUI application. The code: [CODE] import java.net.*; import java.util.*; import java.io.*; import java.nio.*; …  |
| | I need help getting UI to work with my File System [CODE]import java.awt.*; import javax.swing.*; import javax.swing.JLabel; import javax.swing.JTextArea; import javax.swing.JTextField; import java.awt.event.ActionEvent; import java.awt.event.*; class UI extends JFrame implements ActionListener { private JButton format = new JButton("Format Disk"); private JButton mount = new JButton("Mount Volume"); private JButton createDIR = … |
| | Hi, I've gotten this program to work but I want to format it differently. I feel like I've tried everything to make the changes that I want but they just don't work. I think I may have the right idea on most of what I want to change but keep … |
| | Basically When i click b1 in the Pincode method i want the Balance(); method to run and display a JButton "2" but i want to clear the frame and panel first, so it looks as if its a new frame... Any help is much appreciated thanks! :) [CODE]import java.awt.*; import … |
| | Got a test coming up and I need some help understanding arrays....Below is the code I wrote to match the question which follows underneath that... [CODE]class Student{ String id;//this student's ID int midScore;//this student's midterm score int finalScore;//this student's final score public Student(String id){ this.id = id; } public void … |
| | Hi! I'm having some problems with gridbaglayout trying to get functionality that maybe isn't even there. The problem is the following I have 3 Jpanels with differend contents. I want panel 1 to be displayed to the left of the screen filling the y-axis, panel 2 in the middle filling … |
| | Hi guys! I found a lot of my answers on this webbie, so I registered myself. I'm creating a java based quiz program. Now i'm running into a lot of problems trying to get stuff working. The problem i'm having now is the following: I have a class Question, and … |
| | Hi, I am trying to run some simple updates using java in Oracle(10g). I have a simple java program to do it. Running the code using Eclipse IDE. The strange thing about it is that the connection is fine. If I run a [B]select[/B] query, it works fine. However if … |
| | Hello everyone, I am developing an application which makes use of abstract classes. I am trying to create a switch statement, which I have placed in the abstract class as all the subclasses can use this. I would like to refer back to this statement in a scanner which is …  |
| | Hi, I have just written a java program, but every time i compile it, I'm getting some errors that I am having trouble solving. This program is an object-oriented program. So if anyone could please help me, let me know and I will inbox you my work! thank you! :) |
| | Hi, What's the best way to round doubles as in currency? I also have this error that says: internal error, cannot instantiate paycheck(java.lang.string, double, double) at paycheck to (). If you need to see the codes, I can post them. Any help at all would be greatly appreciated! Thanks! |
| | Hey guys, Im having some problems with an exercise that I need to complete with the use of inheritance - In the exercise I am concerned with two Classes (Cupboard and Safe). The cupboard can be opened and closed and tested to see if it is open or not. A … |
| | hello Is this String from my properties sheet able to become a prepared Statement. is the syntax compatable? [code][b]if the string from properties is i=0 for the array [/b] private boolean createTables(Connection conn) { for (int i = 0; i < schoolofdbTables.length; i++) { boolean bCreatedTables = false; PreparedStatement ps … |
| | Hi, in a "contact us" page named contact.htm that has some input textboxes, a submit button, and a reset button. When I fill out the fields and click Submit, it posts to an asp page that sends an email. What I want to do is to clear out the input … |
| | nevermind. it's 6:30 and i forgot to save the class file in the same place. :||||||||||| |
| | Hi there, I'm working on a small task to practice my (non-existing) java skills. I'm trying to write a program that reads a text file and replaces every character with a .wav file containing a musical note. A friend gave me some help, and with his help I made class … |
| | hello there u said if any body need help u can help them so plz i need ur help with this i did a program in java gui (temperature converter) and i just need the program to print the result in a text file so plz plz plz help me … |
| | Hey all - I have created an ArrayList as follows: [code]ArrayList<Object> arList = new ArrayList<Object>();[/code] The arraylist contains the following - every time it will have the same data ... either filled or considered ""; String - transaction type String - name String - ssn String - address int - … |
 | Beginner in Java. I am trying to find the highest value and lowest value of an array. The highest value works perfectly fine, while the lowest value keeps on giving me 0, even though 0 is not part of the array. Below is the code. Thanks. [CODE] mxm = n … |
| | Hi, I'm new to Java. Bumped into an error when doing a program. The code below will basically explain everything. This error [CODE]java.lang.ArrayIndexOutOfBoundsException: 15 at randomintegers.main(randomintegers.java:43)[/CODE]keeps on showing up and the program will not execute further. If anyone can help me soon it would be great! Here is my program … |
| | i'm having a few problem with my phone book program: 1. If the any of the buttons have empty fields, I need to display an error message. How would I do that? Some sort of try/catch statement or if/else statement? 2. I'm a bit clueless as how I would go … |
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