З основного меню, виберіть Run | Debugging Actions | Smart Step Into or press Shift+F7 . Click the method. Ви можете також вибрати його за допомогою кнопок arrow або tabs and press Enter / F7 .
Run the program in debug mode Click the Run icon in the gutter, then select Modify Run Configuration. Enter arguments in the Program arguments field. Click the Run button near the main method. Від menu, select Debug.
Якщо код is outdated, or the versions (source code and compiled class) mismatch in any way, it can happen that the debugged is giving the IDE information to show a certain line, but that information is not correct giving the current source code, which might cause what appears to be the debugged "jumping" …