Netbeans用Java如何找到错误的来源？

Question

I use Netbeans for my Java IDE. I am building off a 3rd party API. I have built quite a bit on top of it. I try to leave good debugging messages around my code, but I am getting a very basic error message, then my program is closing. I get this Error - java.io.EOFException and then shortly after the program closes. I think it is just a system output printed line showing the error coming from the API.

Does anyone know of a technique in Netbeans of Java in general where I could identify where the error is coming from?

Answer 1

One can put a break point on the constructor for EOFException().

To do so:

1. From the menu select Window -> Debugging -> Breakpoints or (Alt+Shift+5)
2. In the Breakpoints window, right click for pop-up and choose New Breakpoint ...
3. Set Breakpoint Type to Method
4. Set classname to java.io.EOFException, for convenience click the All Methods for given class checkbox. (otherwise you would have to set different breakpoints for the different constructors)
5. Choose Run -> Debug Project (Ctrl+F5) to debug your program. It should stop when the EOFException is created.
6. Go to Window -> Debugging -> Call Stack to see where it was called from.