Somewhere in my program is a infinit loop. I start the programm and it does not stop. Since I have no idea where the issue is, I can not use breakpoints.
Is there a way to start debugging manually after a given time in Netbeans? Then the curser should be inside the invalid while loop.
When you start your program in debugging mode you can hit any time "Debug/Pause" and see under "Window/Debugging/Call Stack" where your program currently is.
Another idea would be to use the profiler to see which method uses more time than expected.
Related
I am currently developing a java application, I am trying to use the builtin debugger in Netbeans. I wanted to know how to trace back in the debugger.
Assuming I am executing the instructions line by line, if the program is currently executing 105th line of code and if i would want the program to go back and execute the 103rd line of code, how do i do it? Is this even possible ?
Please read the below link. There is a concept of Pop Topmost Call which might help you.
http://wiki.netbeans.org/FaqDebugBackup
You can do that by setting a break point on 103 line. Then go the call trace and then on the call before to the current right click and do drop to frame. It will re execute that part. Then it will hit you break point on line 103.
I suggest you don't dot it multiple times in the same run. the state of the system becomes unstable for the run by doing this over and over again.
Ive been debugging a project in eclipse. I inserted a breakpoint on a while statement. All was working fine, I was monitoring the variable increments. I tried to change the test class, but forgot I was still running the program, a message popped up and asked a question (I can't remember the exact phrasing) and I clicked terminate. But now when I run the debugger, it runs through the program and gives me the following
<terminated, exit value: 0>
But it doesn't allow me to step through the program. I tried "skip all breakpoints" but that isn't the answer.. It has something to do with the pop up message I'm pretty sure.
Many Thanks for your help
Probably the debugger skips all breakpoints.
Hit the search button in the top right corner
Type skip all breakpoints
Click the result.
Debugger shall be working from now on.
I had the same issue earlier, I have found the answer on youtube :)
I'm currently writing a pretty large program that calls the same methods from different places.
Now I would really like to see how the program goes from one method to another as it is running. Like a live view that shows when what method is opened (and why?). Call Hierarchy doesn't suit my needs at this point. Is there a way?
One way to follow the logic of your application is by placing breakpoints at the line of code you want your application to stop at but, to do this you'll have to setup it up in debug mode.
Every major IDE will let you do this, including Eclipse.
Have a look at this tutorial:
Java Debugging with Eclipse
Once you setup your program in debug mode you can add a breakpoint in the gutter next to the line numbers.
I'm using Eclipse Juno to debug a java class while testing with junit, but the debugger has been acting flakey. I will reach the breakpoint I want and all seems well with the variable values, but in my console, all of the print statements I set up later in the code are popping out as if I were stepping through it!
(note: they aren't printing as fast as they normally would if I had simply run it, and the output itself is a bit garbled compared to normal output).
Somehow, the code is executing through without me pressing a button. If I try to step through, my view of the code and variables is correct, but debugging stops once Eclipse thinks the program has finished.
Something I should probably mention is that I recently put Fedora on my laptop, so I haven't been running eclipse on it for very long and this is my first time trying junit. Is is possible that I need to download something for my debugger?
Is there a way how to stop debugging when program hits the breakpoint (i.e. I don't want to execute the code after it) without stopping entire application server (I am programming apps in Java, server is JBoss)?
I know only one way how to stop debug - red button with title Terminate which shuts down the server. So is there anything else?
While debugging, context menu offers you to force a return. This instantly leaves the method and will take you back to the caller. One can also use Alt+Shift+F.
If you mean "I do not want the code after my breakpoint to execute", then you could use a conditional breakpoint to execute a return from that method.
(Note that you can execute any code you like in a conditional breakpoint. It does not have to be just a condition.)
You can hit the disconnect button. See the attached image. This will continue execution and stopping debugging without stopping the server.