Necessary for beginners: debug breakpoint debugging skills in idea and common breakpoint skills

IDEA Medium debug Breakpoint debugging techniques

1. How to break points and cancel breakpoints

Click the position of the red arrow to interrupt Cancel twice

2. Execution Breakpoints

3. Enter the breakpoint

1. Horizontal button

1. Return to the interface where the current breakpoint is located

2. Execute down line by line according to the current breakpoint – Will not enter the method

3. Executing down line by line according to the current breakpoint will enter the method -- But we can only enter the method written by ourselves --java Methods in class libraries cannot enter

4. Executing down line by line according to the current breakpoint will enter the method -- But we can enter our own method -- You can also enter java Methods in class libraries – Any way

5. Directly execute the current method , Go back to the end of the calling method

6. Directly execute the current method , Go back to the calling method

7. Return to the interface where the current breakpoint is located and perform the next step

8. Calculator – You can check the later running results during the program running

2. Vertical button

1. Rerun program

2. Enter the next breakpoint to execute

3.debug Mode paused — Generally do not use

4. To terminate the program

5. View all current breakpoints

6. Invalidate the current breakpoint – Double click restore

Common techniques for breakpoints

1. Set conditions for breakpoints

2. Values can be dynamically modified – But only once

3. Use breakpoints to regulate threads – Set to thread mode

   1. First open thread The breakpoint thread is starting debug

2. When executing a thread, select the thread you want to execute

matters needing attention

1.debug It is best to enable the main program when debugging breakpoints

2. If you need to output the value, you'd better output the value in advance , For the convenience of the back debug Debugging and going to the next step

Enter this cycle