36,051 Topics
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 | 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. … |
| | I put a bunch of JButtons in a 2D array into a GridLayout. I want the user to be able to change the size of this grid at run time, but I tried resetting the row/cols, re-adding the buttons, remaking the panel that this grid is in - all to … |
| | I'm supposed to ask the user for a grade and store that grade for future use and add curves. How do I store the grade and send it to the different methods in the switch statement? Thank you for checking out my question! import java.util.Scanner; // Used for keyboard input … |
| | Hi all. I'm currently writing a pool game in java and I'm having trouble making the cue ball move by using the mousePressed(), mouseDragged and mouseReleased() methods of mouseEvents(). When the mouse is dragged a line should appear out of the ball in opposite directions one for the power and … |
| | Hi guys, I am toying around with ArrayLists and objects and I created a quick program to add some objects to an ArrayList and print the list afterwards. I ran into an issue, though. I am overriding the toString method in order to display the names of the objects I … |
| | This is the criteria i am required to get my program to do. I have looked on google for help but I can't find any. Enhance / modify the program you created in the previous assignment. Create a class ScanArray. This class should have two methods FindMax and FindMin. Class … |
| | hey there. (i first posted this question on the wrong forum... idiot.. i know) I want to change the looks of my buttons in netbeans (6.9.1) But when ever i try (when i go to the properties -> icon -> and try to select the images, ONLY a few of … |
| | Hey there i have a problem with a program that works on other pc's but not on my laptop. (it connects to access) When i try to run it it gives me the error "AAAjava.sql.SQLException:[Microsoft][ODBC Driver Manager] data source name not found and no default driver specified" I already reinstalled … |
| | Hey there I started coding again on my old project in netbeans but i have no idea what kind of a prject it is, for example, is it javaEE or whatever. like in the image attached. How can i find out what my current project type is? Thanx |
| | Hey there. Whyy is my netbeans so retarted?! is this a common problem? or is it just with me? Ive attatched two images to show you what it does to my buttons. image one is the actualy program running image two is in the design view Thanx |
| | hello everyone, I am recieving this compiler error stating that `else if(input%100 || input%10 == rndNum%100 || rndNum%10)` this line ^ gives me the error error: bad operand types for binary operator '||' was hoping someone could explain this error to me if possible, also any advice would be greatly … |
| | Hi everbody, in the server side of my project,when i close the socket then try to open it again the following exception is thrown java.net.SocketException: Unrecognized Windows Sockets error: 0: JVM_Bind how to solve this without close the whole pogram to enable a client to reconnect to the server? |
| | Hello guys, I'm fairly new to Java. I have been asked to create a simple GUI (JLabel, JTextField and 3 JButtons) I have managed to create the GUI but I'm having trouble with making the buttons work. Here is my actionPerformed method: public void actionPerformed(ActionEvent evt) { if(evt.getSource().equals(printButton)) // This …  |
| | Ok, so I'm writing a chat client/server and both the client and server are multithreaded to accept user input and read from the socket at the same time. Since it can do both at the same time, I'm trying to overcome the problem of the user typing in a message, … |
 | # 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 … |
| | Hi guys, Today I've passed the SCJA exam, but i was wondering if Oracle will send me a certificate to my address proving that i have passed the exam and i'm offically SCJA holder?? Thanks guys |
| | Hey guys, I recently had an assignment to write a sort algorithm we have not yet gone over in class. I had no problem getting my code written and to compile, but now that it compiles I keep getting an error that says "Exception in thread "main" java.lang.NoSuchMethodError: main" I …  |
| | 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.... |
| | Hi everyone, I'm trying to make a simple application displaying some amount of buttons which has added simmilar but different action. The amount of buttons is not known before compiling because it depends on external data. All the buttons are shown in some container. How did I get it: -creating … |
| | Can you help me with this code, I do not know what is wrong? Thread is stuck somewhere? import java.io.*; import java.util.*; import java.util.concurrent.locks.ReentrantLock; public class Pokemon { private static ArrayList<String> pokemonList = new ArrayList<String>(); private static ArrayList<Thread> threads = new ArrayList<Thread>(); private static ReentrantLock lock = new ReentrantLock(); public … |
| | **I am making an Email Parser program. The email should follow following rules: • The prefix or the user-id (i.e. the characters before @) should contain at least 6 and maximum of 15 characters. • The domain name (i.e. the characters after @ and before dot) should contain at least …  |
| | 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 … |
| | Hi, I have created the following code to get connection object to Database(MySql in my case) using a static method. I wanna know whether it is a good practice or not? Will there be any problem like concurrent access? Any information will be helpful. public static Connection connection(){ Connection conn …  |
| | I'm a 'JMenu Expert' or w/e, but I've used JMenus a few times before and have gotten them to do what I needed them to do... However, I am trying to do a new thing, and I'm not actually sure it's possible in java (maybe in Xcode) I am using … |
| | 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 … |
| | Hey guys, i need help with this assignment. I am a complete beginner in java programming so i don't know how to get started in this thing. For this project, i am suppose to search for a specified word within a block of text. The word, the size of the … |
| | hi! I am designing a 2d game, in my game i want to add a feature e.g. in my jframe i have three images if a user clicks on a image that image will automatically get set as a background throughout the three laves (in my game they are three … |
| | I need to input multiple files from directory but how to do it for any file name? If I do not know the file name So I can pass one by one file to thread? int 1 = 0; while(true) { String name = "Lab3File"+i+".dat"; File file = new File(name); … |
| | How to take any bumner of arguments form command line and to search in arraylist> I now do it in with defined number of arguments and take every argument and search, but this is unlcear to me? Thanks |
| | please tel me the logic behind the code for find the common aphabets between two words?? ex ... mine mind common letters are : m i n like |
| | Hello! I need some help dealing with this error: java.lang.ArrayIndexOutOfBoundsException: 16 at com.lameguard.crypt.LamePacket.writeB(LamePacket.java:40) at com.lameguard.LameGuard.assembleAnswer(LameGuard.java:445) at l2ft.gameserver.network.l2.c2s.ProtocolVersion.runImpl(ProtocolVersion.java:94) at l2ft.gameserver.network.l2.c2s.L2GameClientPacket.run(L2GameClientPacket.java:50) at l2ft.commons.net.nio.impl.MMOExecutableQueue.run(MMOExecutableQueue.java:38) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) What could be causing this? Any suggestions are welcome! Thanks |
| | 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 … |
| | while configuring workspace in Eclipse, applet is not loading i am using jdk1.5 and Tomcat 5.5 but when iam try to open same application in IT link applet is loading sucessuflly (i have used the same code to configure locally) can any one please let me know how to resolve … |
| | Hi! I'm working with a huge software system with a lot of people being involved in the coding through many years. I'm noticing more and more that there is a lot of bad code, especially get methods here and there with huge side effects, which you totally not expect. So … |
| | Hello! I'm trying to find the RPG color code of the default button? does anyone know? |
| | I created a function that saves a file with a custom extention ".nra" however each time that i enter a file name, it throws ArrayIndexOutOfBoundsException public static void SaveFileNra() throws Exception { if(gl.DataStack.isEmpty()) { System.out.println("There is nothing to save!\n"); Menu(); } else { System.out.print("Enter the directory you wish to save … |
| | ok, so if i want to increment soemthing to "2.4," how would i do that? This is what i have: While (something == D) { total+=2.4; } Would this be correct? |
| | 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 … |
| | Hello problem i am having is when trying to multiply polynomial 1 by polynomial 2 polynomial 1 gets mutliplied by the first term in polynomial 2 and not by each term in polynomial 2. Below is my code: ~~~~ /********************************************************************************************* * Multiplies Polynomial 1 to Polynomial 2 * The method … |
| | So the program I'm writing should count how many of each individual vowel is in the program and then print that. I'm basically stuck with while and conditional statements. I think my if statement is where I've gone wrong. I'm not sure how to have it read the letter properly … |
 | > 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 ... … |
| | hello every one i trying to display image in jsp by using following code <% System.out.println("from the view page"); String imagePath =(String) request.getAttribute("path"); System.out.println(imagePath); %> <img src="<%=imagePath %>"/> variable imagePath shows the correct path where imge is store but it doenot display any image please suggest me some way to … |
| | i have a single list program which i need to sort the nodes of int and String type unsing only one of these algorithms (insertion, selection, bubble and shell). no merge or quick or using collections and stuff. i'm having a difficulty here, i only know how to implement them …  |
| | To make it short and sweet, here it is. Looking to do a simple screenshot on the client-side (and if anyone would be so kind, point me in the direction to create an automated upload of the screen to a server. ++ if you can provide a tip on doing … |
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