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Questions tagged [awt-eventqueue]

68 questions
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Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1 error

So I'm having trouble with an application I've been working on and I only saw one other post with the -1 error and doesn't seem to help me with what is going on. We have an items tab that when you click on a consignor, it should display the items…
Sheddy
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Read Textfile to jTable

I'm tryin' to import some data from a textfile to my JTable.. I wrote some code to do this: JMenuItem Open = new JMenuItem("Open gegevens"); Open.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { …
VanpeltJ
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AWT-EventQueue-0 Error, cannot call method from mouse click

I'm getting an error when trying to use a method from within another class when the mouse clicks a button. I can call this method from anywhere else fine just when called from here it gives me this error: Exception in thread "AWT-EventQueue-0"…
user202051
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AWT-EventQueue-0 NullPointerException

I'm pretty new to Java, and I'm trying to populate my JList with data from a database. The data is retrieved from the database via the method visKunder() in the Database class. public ArrayList visKunder(){ String s1 = "select kundenavn,…
user3514879
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How to handle "AWT-EventQueue-0" java.lang.NullPointerException?

I am trying to delete a data from JTable and also from text file but got "AWT-EventQueue-0" java.lang.NullPointerException. Please help me, here is my code: private void btndeleteActionPerformed(java.awt.event.ActionEvent evt2){ deleteRow(); …
mayuresh
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"AWT-EventQueue-0" error on a game trial code

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at Snooker.paint(Snooker.java:34) this is error what I've got. Here is the code: Main Class: import java.awt.BorderLayout; import java.awt.Color; import java.awt.Graphics;…
A.D
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"AWT-EventQueue-0" java.lang.NullPointerException in java

I'm coding a program for a pizza restaurant and the code must calculate the total price according to what the customer wants on his pizza. Code import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.JOptionPane; import…
fatima.own93
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Slow work of EventQueue

I have a simple JAVA program with gui that just increments int variable and displays its value in JLabel. I create new thread for proper(thread-safe) updating JLabel by calling inside it EventQueue.invokeLater() with Runnable class which run method…
Artem Novikov
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Java: Exception in thread "AWT-EventQueue-0" java.util.ConcurrentModificationException

i am currently trying to code my own little 2D Game. It's a Helicopter dodging rockets. these rockets flighing from right to the left. If they are outside of the Panel they should be deleted. this is how it looks like: private void doLogic() { …
user2814223
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Trying to read from a text file in java getting error: Exception in thread "AWT-EventQueue-0" java.util.NoSuchElementException

Im getting an error and i have no idea where it is coming from? Heres where i think the problem lies: public boolean verifyLogin(String username, String password) { //method to check if the Login details math those in the text file …
user2654207
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Java: how to use JTableModel in eventQueue

I have a class extending AbstractTableModel and it pools Data from a Database, Since its a Swing Component I initialize it in EventQueue, the Problem is most of the operation such as getting Connection and Querying DB all runs in eventqueue hence it…
Alfa
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Update Thread in applet

In my application i have created multiple Threads, In that in each thread value has been changed. so every minute i want update all threads the same value from the list..In this coding, values are not updated. previous values only retained in every…
kanna
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java exception in thread "AWT-EventQueue-0"

I have recently installed JDK 1.6 update 43 on my machine .Since then, whenever I try to run the event handling programs, I encounter a problem, which says Exception in thread "AWT-EventQueue-0" Which thread does it points to?
user2331020
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Can't filter MouseEvent.MOUSE_CLICKED in AWT EventQueue

I need in my own AWT EventQueue filtering mouse double clicks, so I do: public class AppEventQueue extends EventQueue { @Override protected void dispatchEvent(AWTEvent event) { super.dispatchEvent(event); if(event instanceof MouseEvent) …
1ac0
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Can anyone help me identify the Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException on Line 65?

I keep getting a Run Time error that says I am having an Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException it is saying a [line 65] but to me it just looks like a basic if statement. I can give some background. this frame is call…
user1469139
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