In my Java Swing project I have a button and I added an ActionListener to this button. When click it ;to do something. However when I put a breakpoint in this anonymous inner class and debug it;the breakpoint doesn't been noticed by program. It is running without stop and doing nothing. I wrote for example
>> System.out.println("Hello_Jacks");
in this anonymous inner class and I see
>> Hello_Jacks
on the console. I didn't understand the working principle. What should I do for break point?
I'm not sure that I fully understand your question. If I'm right, your code must be something like this:
1. JButton myButton = new JButton("My button");
2. myButton.addActionListener(new ActionListener() {
3. public void actionPerformed(ActionEvent e) {
4. System.out.println("Action performed on my button");
5. }
6. });
You have to put your breakpoint on line 4. If you put it on line 2, it will be triggered when the action listener is initialized. If you put it on line 3, it will never be triggered. At line 4, it will be triggered when you press the button.
I've tested this a few minutes ago using Eclipse debugger.
Did you put your breakpoint at your "System.out.println" line? It should work.
I put it like you say. İt doesn't work. Even output is Action performed on my button ; but it doesn't stop at that break point.
fireButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("hops1");
SpotTradeInstrument sti = (SpotTradeInstrument) parityForMarket.getSelectedItem();
System.out.println("hops2");
fireSpot("Spot 2", bid.getDecimal(),
null, null,
offer.getDecimal(),
null, null,
new BigDecimal(0),
new BigDecimal(100000),
EsseClock.getCalendar());
System.out.println("hops3");
}
});
This is my code. I put break points from first System.out.println to end of the method. but it never stop. The output is
hops1
hops2
hops3
. What is the problem. How can I solve it. Thanks Sir.
Strange... Which tool do you use ? I use the latest Eclipse Mars.1 EDI...
Which version of java do you use. JDK 1.6 update 14 is known to have a bug for debugging.
I suppose you are not using remote debugging ?
Are you sure Run -> Skip all breakpoints is not checked ? (or that the "skip all breakpoints button is not pushed in the breakpoint vue)
The problem can also occur when the code being executed is different from the code in the editor. That can happen from time to time in Eclipse that the compiled classes and the code in editor are out of sync. Clean All and rebuild can be an option.
You could also have a look to the several discussions on this topic on "stackoverflow.com"
Thanks B. Jourquin . I use Netbeans IDE and JDK 1.6
I put the break point on different point,it works but when I try to use it on actionlistener for my buttons,it doesn't work. It's too strange for me too.
Thanks again for your understanding and trying to help. Best Regards.
Be sure to use the latest update of JDK 1.6. Update 14 is known to have problems
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