Debug (line by line) java programming

 - Bug icon on the top will take you to debug mode
- step into, step over and step return also exist in the eclipse, once you in debug mode.
Once you click Bug icon , you will see 3 icons on the top in the menu, which will help you to do the activities.

Procedure 2:

1. Add breakpoint

2. Select Debug As Java Application 

3. Eclipse ide will pop up a message that debug has been initiated

4. Script will be executing till the break point. It will come and stop at break point line.

5. Here you could use F5,F6,F7*  to take control of the movement of code. 

6. In debug section you will see outcome of each line of code starting from break point.

7. You have resume in menu bar just to come out of debug mode.