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exception in thread awt-eventqueue-0 java.lang.error Dickens, Texas

Henry Books: Java Threads, 3rd Edition, Jini in a Nutshell, and Java Gems (contributor) James Brandon Greenhorn Posts: 3 posted 7 years ago Thanks for that. You may choose to allow others to view your tags, and you can view or search others’ tags as well as those of the community at large. btw, 2 recommandations : Never name a variable with the name of one of your attributes. Campbell Ritchie Sheriff Posts: 50497 82 posted 2 years ago Went back to the record of the original state of the post and copied it onto the editor, unfortunately minus indentation:-

As your answer stands I have to do a fair bit of reading to understand your answer –Crowie Mar 1 '14 at 9:09 add a comment| Your Answer draft saved If Dumbledore is the most powerful wizard (allegedly), why would he work at a glorified boarding school? Source (Stackoverflow) http://stackoverflow.com/questions/25015983/why-do-i-get-the-exception-exception-in-thread-awt-eventqueue-0-java-lang-nul Comments Please enable JavaScript to view the comments powered by Disqus. × Email codedump link for Why do I get the exception "Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException" Let it propagate and then work out why it is occurring.

thanks, Nasser Subject: Exception in thread From: Stefan Stefan (view profile) 15 posts Date: 30 Jul, 2008 08:34:03 Message: 2 of 6 Reply to this message Add author to My Watch This will copy the MultiListener.java file into your project. current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. What sense of "hack" is involved in five hacks for using coffee filters?

Spam Control Most newsgroup spam is filtered out by the MATLAB Central Newsreader. Best regards, Stefan. "Nasser Abbasi" wrote in message ... > 2007a, student version on windoz XP SP2. > > I use GUIDE, and after sometime of using it, I notice ImageIcon icon = createImageIcon( "images/bear/bear-" + choices.toString() + ".gif"); pictureLabel.setIcon(icon); pictureLabel.setToolTipText(choices.toString()); if (icon == null) { pictureLabel.setText("Missing Image"); } else { pictureLabel.setText(null); } } /** Returns an ImageIcon, or null if Heres my code and errors: /** * @author j00000927 */ import java.util.Scanner; import java.awt.*; import javax.swing.*; public class ComplexNumberPlot{ //Num is static because I was having trouble calling num.

Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #4 lemayian New D.I.C Head Reputation: 0 Posts: 2 Joined: 21-May 13 Re: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerEx So consider whether you should delete the field. After the exception, the program state returns to what it was just before the beginning of the statement, so pattern reverts to being null. protected void redoTo(UndoableEdit edit) throws CannotRedoException { boolean done = false; while (!done) { UndoableEdit next = edits.elementAt(indexOfNextAdd++); next.redo(); // NPE here?

public Hangman(){ JButton n = new JButton("n"); //then here I put "JButton" again, and aparently didn't need that? There are thousands of newsgroups, each addressing a single topic or area of interest. Use the Email Address of Your Choice The MATLAB Central Newsreader allows you to define an alternative email address as your posting address, avoiding clutter in your primary mailbox and reducing So to fix the error, assign it a non-null value.

I never got a clear response on this topic. Because when I removed JButton from this line, everything went back to normal. } //then down here I had another method that was used to set a few properties of n. You can add tags, authors, threads, and even search results to your watch list. I want the user's complex number in there, I know, but I am no good at this language.

But I think there may be another solution. Here is my program: package components; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Workshop extends JPanel implements ItemListener { JCheckBox winterhatButton; JCheckBox sportshatButton; JCheckBox santahatButton; JCheckBox redshirtButton; JCheckBox brownshirtButton; JCheckBox Discover... Apply Today MATLAB Academy On-demand access to MATLAB training.

In the United States is racial, ethnic, or national preference an acceptable hiring practice for departments or companies in some situations? I found a small workaround to free some heap memory. java swing compiler-errors jpanel paintcomponent share|improve this question edited May 15 '13 at 10:50 mKorbel 99.8k1384201 asked Mar 29 '13 at 15:53 thehoule64 2833718 You are (some how ) Does declaring it within the method OVERRIDE the old variable?

Note: Recompile with -Xlint:deprecation for details. [[email protected] MATLAB Central is hosted by MathWorks. House of Santa Claus Appease Your Google Overlords: Draw the "G" Logo Why does the material for space elevators have to be really strong? I did by mistake erase the error message before I copied it but I think that I can pass the core of the problem any way.

Thanks in advance... Right click, select Run as, select Java Application. Your attributes should be private: private List path; share|improve this answer edited Mar 29 '13 at 16:05 answered Mar 29 '13 at 15:58 user2147970 33716 add a comment| up vote 1 i have been trying to fix it for hours and simply cant find the problem.

posted 7 years ago Thanks for that. They were both supposed to be 'a'. MATLAB Central You can use the integrated newsreader at the MATLAB Central website to read and post messages in this newsgroup. If you have Build Automatically turned on, it will also compile it. - Navigate to MultiListener.java in the Package Explorer.

share|improve this answer answered Mar 14 '14 at 17:19 chirality 31728 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Check your showUserDetails method for one of this cases. The default max allocatalbe memory for the java heap in Matlab is 128Mb i think. Anyway, you need to call connect() on DBMan before you can do anything useful with it Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #6 pbl

You should work out why there is a null and give it a real value, then all will be well.