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JDBC ODBC.. (Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException)


JDBC ODBC.. (Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException)

By : ashraf
Date : November 20 2020, 07:00 PM
fixed the issue. Will look into that further EDIT: You still haven't indicated which is line 197 in the question, but I'll assume it's
code :


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Matlab reports "Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException"

Matlab reports "Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException"


By : user2177627
Date : March 29 2020, 07:55 AM
To fix this issue Well based on your stack trace probably there's no a definitive answer to your question, as you have already seen in Matlabs forum, but given this line I think there's a possible explanation:
code :
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    ...
    at javax.swing.undo.UndoManager.redoTo(Unknown Source) // <-- here!   
    at javax.swing.undo.UndoManager.redo(Unknown Source)
    at com.mathworks.mwswing.undo.MUndoManager.redo(MUndoManager.java:255)
    ...
public class UndoManager extends CompoundEdit implements UndoableEditListener {
    ...
    public synchronized void redo() throws CannotRedoException {
        if (inProgress) {
            UndoableEdit edit = editToBeRedone();
            if (edit == null) {
                throw new CannotRedoException();
            }
            redoTo(edit);
        } else {
            super.redo();
        }
    }
    ...
    protected void redoTo(UndoableEdit edit) throws CannotRedoException {
        boolean done = false;
        while (!done) {
            UndoableEdit next = edits.elementAt(indexOfNextAdd++);
            next.redo(); // NPE here?
            done = next == edit;
        }
    }
    ...
}
at com.mathworks.mwswing.undo.MUndoManager.redo(MUndoManager.java:255)
"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException" on button press

"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException" on button press


By : Chris Egbert
Date : March 29 2020, 07:55 AM
will be helpful for those in need myOutputStream is never initialized. You commented the part where it is supposed to happen.
Reason for"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException"

Reason for"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException"


By : Tyagi
Date : March 29 2020, 07:55 AM
will be helpful for those in need i am creating to create a hotel reservation system ,but evey time i run my project i recieve "Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException" and i have not been able to find why . here is the error report i recieve , This line
code :
 at hotelreservation.Reservation.fill(Reservation.java:389)
jTable1.setModel(dtm); 
"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException". I have no clue what I'm doi

"Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException". I have no clue what I'm doi


By : user4285592
Date : March 29 2020, 07:55 AM
like below fixes the issue You button variables aren't assigned until you call initGUI(), which is at the bottom of your constructor. So, when you do this:
How to solve error " Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException:"?

How to solve error " Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException:"?


By : AtariPixel
Date : March 29 2020, 07:55 AM
around this issue Removed OpenJdk-7 version and install Oracle Jdk for ARM processor and Hard Float Os Image. Here is link for that.Oracle JDK for ARM processor
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