Netbeans：如何逐步运行项目，以便查看逻辑错误在哪里？

Question

I remember one of my tutors in University, running a project in Netbeans step by step, manually going through each step of the run time. Anyone have any idea how to do this? I can't seem to figure it out.

Answer 1

First you need to add breakpoints to your code by clicking on the line number like shown on the image below:

Once you do that you can start you application in debug mode. You do this by clicking the debug button. And the your program will stop at specified debug points. Here is the image of the debug button:

You can get more information here: https://netbeans.org/features/java/debugger.html

Answer 2

Once you place a breakpoint you can continue from there either step by step or even using commands to get into a function and move to the code executed by it. You can see a list of your options in the Debug menu:

F8 - Step Over

F7 - Step Into

Ctrl + F7 - Step out

And so forth. This way you can navigate step by step without the need to have a breakpoint at each step.