1. Turn on debug mode
Click on the green bug to turn on the debug mode, if there is not in the top bar, then select Run-Debug
2. Detailed explanation of several buttons
1 jump to the next step
2 Enter the method body
3 Force into the method body
4 jump out of the method body
5 Run to the cursor
6 Calculate the result of running the code
7 Jump to the next breakpoint
8 stop code running
9 view all breakpoints