36,051 Topics
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| | Hi, I'm doing a bouncing ball game. i'm using y=mx + b I want to know when y hits certain numbers. that means it had a collision. the numbers are whole numbers like 539 etc. I increment Y slowly because i also want to not let x move much. when … |
| | Ive been told that i can make Iphone Apps using java, but what IDE/File Extension/Code Structure do i use? can i simply use a converter program to swap my current java code into an iphone App or would i need to code from scratch? Any and all advice is greatly … |
| | I am taking an IT course and need help desperately. I have referred to several different resources and am having a hard time grasping OOP. I came across this site and thought I should give it a try. Please bear with me I am new to the site. I am … |
| | please guide me to connect java application with "open office" database  |
| | Hi hoping for some help with what is wrong with my code. Basically i have 2 sets of arrays that need to be compared. I'm creating a computer shop so there is a set of arrays giving descriptions of the computer like CPU speed etc and there is another set … |
| | I have a main class that sets up a blank JFrame, it adds a method from the GUI class I made... that takes 4 arguments, all arraylist… so the first arraylists sent are empty. Then in my game I made a “guiInstance” that calls the same GUI method. It is … |
 | Hello, everybody. I had a problem while connecting to Oracle. Got messages: [QUOTE=Error]ORA-00604: error occurred at recursive SQL level 1 ORA-12705: Cannot access NLS data files or invalid environment specified[/QUOTE] And found solution for this - setting the default locale in java code: [code=java] Locale.setDefault(Locale.US); [/code] This works just fine … |
| | Hello, I'm trying to create Frame with 2 JButtons and 1 JList. Buttons are Add and Remove. After clicking Add button JFileChooser creates and user choses a file. The file then must to be added to the JList. [CODE]public class GmFrame extends JFrame { private JButton bAdd; private JButton bRemove; … |
| | Can you help me modify this program so that it contains loops within loops somewhere. I have a while loop but that is only one. To pass my task my program MUST contain Loops Within Loops somewhere. Thank you. [code] import javax.swing.*; class team { public static void main (String[] … |
| | I have this simple project that I'm sure has come throught here before. I am take input from a user using JOptionPane, make sure it is >15 Chars, and count the uppercase. Here is what I have so far. I am having trouble setting the first loop correctly. [CODE] import … |
| | I'm currently trying to create a client program that sends location variables (x and y) to a server, which then passes it on to another client and vice versa so when one client moves the object, the other client see's the change immediately on screen. I think get and set … |
| | First here is what I need to accomplish: --------------------------------------------- The program In this program you will create a direct access file on a simulated disk. A number of sectors will be allocated for the file and records will be written to the sectors using hashing. The sectors will be buckets, … |
| | My code outputs the correct answer to both the GUI and to a text file, but it displays it in a list format instead of a clean looking table. What modifications have to be made to assign formatting of output correctly? [CODE]import javax.swing.*; import javax.swing.border.*; import java.awt.*; import java.awt.GridLayout; import … |
| | Hi all I want to know what player can I use at my java application(at my JPanel) for playing rtmp streaming.I do need your help.Pls help me.Thank in advance. |
| | Hi all, I have a program, which is invoked from a shell script. I need to return back to the shell script a status, whether the program succeeded or failed, so the shell script determines whether to continue with its normal course of actions or to stop upon faileur. So, … |
| | I have this program that I am working on that I am trying to insert user entered integers till a "-1" is detected and it will stop inserting the integers into the Tree and print it out inOrder. I am geting 2 errors: File: S:\makeup1.java [line: 9] Error: S:\makeup1.java:9: cannot …  |
| | the error...[CODE]Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at javaapplication1.memberTable.AddMember(memberTable.java:21) at javaapplication1.GUI3.memberAddActionPerformed(GUI3.java:2345) at javaapplication1.GUI3.access$000(GUI3.java:28) at javaapplication1.GUI3$1.actionPerformed(GUI3.java:352) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6041) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5806) at java.awt.Container.processEvent(Container.java:2058) at java.awt.Component.dispatchEventImpl(Component.java:4413) at java.awt.Container.dispatchEventImpl(Container.java:2116) at java.awt.Component.dispatchEvent(Component.java:4243) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916) at java.awt.Container.dispatchEventImpl(Container.java:2102) at java.awt.Window.dispatchEventImpl(Window.java:2440) at java.awt.Component.dispatchEvent(Component.java:4243) …  |
| | Hi, I am using the OR operator in my while loop and its not very responsive: [CODE]while (transaction != 'Q' || transaction != 'q' ){}[/CODE] The user previously entered a character for the variable transaction, however when the user enters 'Q' or 'q', the while loop is not skipped. Can … |
| | [code] import java.util.*; import java.lang.*; class sub { public static void main(String[] args) { String a = "1"; String b = "2"; String c = "3"; String d = "4"; String e = "5"; String f = "6"; String g = "7"; Scanner sa1 = new Scanner(System.in); System.out.println("1) Encrypt"); System.out.println("2) … |
| | Can u plz help me..how to re-boot my pc after installing java |
| | im working on this program and im getting really stuck. i was hoping to get it done soon, but it is dragging out. i have completed the first half of the instructions, i believe. [CODE]2. Create an abstract class called Student. a. Student will need instance variables name , qz1, … |
| | i want to create Java program that accepts 3 numbers (num1, num2, num3) and sort them in ascending and descending order. Example: Enter num1: 8 Enter num2: 3 Enter num3: 9 Ascending: 3, 8, 9 Descending: 9,8,3 can anyone help me for this (sorry for my bad English) |
| | i was trying to run a program on RMI i did the following [code] import java.rmi.*; public interface HelloInterface extends Remote { public int add() throws RemoteException; } [/code] [code] import java.rmi.*; import java.rmi.server.*; public class Hello extends UnicastRemoteObject implements HelloInterface { private int m,n,message, k,l; public Hello (int m,int … |
| | Can someone please explaon the difference of the above action listeners?? it seems like they both do the same thing - that is close a frame/window. big help thank you |
| | Hello guys.. i need a help.. m new in java swings.. m using netbeans to create one application.. here i have to insert a new jtable at runtime.. like when a click on a button jtable should be inserted.. how can i do that in netbeans.? please help.. |
| | Hello. i wish to create a jsp page which will accept username and password from list and display a page showing the selected details when clicked on submit [code]<html> <head><title>course information form </title></head> <body> <form action="course_details.jsp" method="post"> username: <select name="username"> <option>nikhil</option> <option>avdhut</option> <option>gauri</option> </select> <select name="course"> <option>MCA</option> <option>MBA</option> <option>MCM</option> <input …  |
| | I have to write a program that creates a GUI that prompts a user to enter a query, then return the result to the same screen. All the examples I've found in my text book and other course material only shows how to account for a predetermined query. How do … |
| | Hi, I have some vertices and edges and i have to create an adjacency list. I have taken an array and stored all vertices in the array. Now i need to add the edges to the graph. The input is given as a text file. When i read "a b … |
| | Hi i am trying to create a JSP class which will redirct but for some reason i keep getting an error when eneterning the correct info. i think [CODE] System.err.println("DEBUG: Query: " + selectSQL); Statement stmt = conn.createStatement(); ResultSet rs1 = stmt.executeQuery(selectSQL); while(rs1.next()) { u += rs1.getString("U"); p += rs1.getString("P"); … |
| | [B]Background:[/B] Hey guys I'm making the first part of a greater program. We are instructed to create a program that stores a list of all our CD's. It has to be created in 3 different classes... that obviously link together. [B]My Question[/B] How do I create an array that is … |
| | I am creating a game like the text-based game Zorg using a console program. However, I don't know how to create a save file. How can I do this using the player's name to restore the variables I need? |
| | hi guys .........help me ... how to accses shared file from lan by java proggram (tell me by code). plz help |
| | Hey, I'm working on a problem and what I need the program to do is to add up the numbers in the array NOT add up how many numbers there are. There are 5 total numbers that a user will input. The counting of the numbers will be in a … |
| | How do we connect forms in java swing? |
| | Hi guys, I have this project question that is just REALLY boggling me and I am getting nowhere :( The project description is really large and I can't post all of it hear but I'd just like to post the part I'm on and how far I've gotten with the … |
| | So the program I have is supposed to read from a file take that data (which is split into three parts divided by a space). These Strings need to be read and stored in an appropriate field. Now i dont know how to do this, I've tried with an array … |
| | I have run avast in safe mode as well as spybot S&D and ccleaner. Avast found a virus "virtumonde" in system32 and the system restore registry and deleted it. Spybot also found it and deleted it. I have been unable to install malwarebytes. I downloaded it but installation fails. Here … |
| | Hi again, I have a small application that calculates time left over in a day after events. The problem I have is that if either the starting time or ending time is 4.10 or 5.10 I get slightly incorrect answer. Eg. if the only event starts at 4 and ends … |
| | Hello pplz I’m just starting to play around with the arraylists and GUI a bit and I’m having trouble figuring out how to access the arraylist and display it. This is what I got so far for when the add to arraylist button is clicked I’m not shore if it’s … |
| | I need to write a program that takes in an input using JOptionPane and make sure it is more than 15 characters, then count the number of uppercases in the phrase. Please help desperate student. |
| | Hi all Plz help me about media streaming.I want to play files that transmit from 'rtmp' link at my java application program.I have a program that play from 'http' link.Code is here [code] import java.awt.*; import java.awt.event.*; import java.io.*; import javax.swing.*; import javax.media.*; //import com.sun.media.protocol.rtsp.DataSource; import java.net.*; public class MediaPlayerTest … |
| | Hello! There is possible to download automatic speech recognition engine Sphinx4 in two versions, one is bin, the other is src. It is explained how to build Sphinx4 engine with Ant here: [url]http://cmusphinx.sourceforge.net/sphinx4/#how_build[/url] . However there are many applications which use this Sphinx4, e.g. HelloDigits. I'd like to create my … |
| | Here i mad panel and i put two Boxes in it , then i tried to make a background color for box by useing ([B]background(color.blue)[/B] method) but it never has the color . Then i try to resize its height by useing [B]Box.createRigidArea(new Dimension(10, 50))[/B] but the titleBoard take all … |
| | Hi guys, Is there any javaFX code generator other than [ICODE]jfxbuilder[/ICODE]??? And Is someone here knows any news about [ICODE]javaFx authoring tool[/ICODE], like the release time, cause I got nothing from [ICODE]google[/ICODE]. Thanks [EL-Prince] |
| | Hi guys, I am trying to create an application to serve on the web which is an integration of a java application and some php for mostly presentation functionality. Has anybody here successfully done anything like this before, and if so how? Please help. In dire need here. Thanks in …  |
| | Hey, I have been using youtube to learn how to use the JPanel, as the prof has not given a lesson regarding that… The project was a game, which I have finished, but for bonus I can do some sweet sweet graphics. Anyhow the game saves the data in arraylists …  |
 | Hello, I build my java desktop application using NetBeans 6.7, visually. So I click on the Frame -> Events -> KeyTyped and I add a new handler. The problem is the key events are not detected! My components are Swing components. Why is this happening?? :( [CODE] private void formKeyTyped(java.awt.event.KeyEvent … |
| | I finally got it in order for smooth compilation, but nothing gets converted [CODE] import java.util.Scanner; public class nizadi_Lab8 { public static void main(String[] args) { if(args.length > 0) { try { Integer.parseInt(args[0]); } catch(NumberFormatException f) { System.out.println("wrong format"); } } else { System.out.println("no arg"); } } public int printBin(int …  |
| | Hi, Could someone please tell me how to read from a CSV file? Also, how to update (write) to a CSV file? Thanks, -Ashton. |
| | Hi, I was wondering how developers have stable backgrounds, with scrollable foregrounds. i.e. [URL="http://forums.devx.com/"]http://forums.devx.com/[/URL] Please could someone give a basic piece of sample code to demonstrate this. Thanks, -Ashton. |
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