Setting Source Breakpoints

A source breakpoint is a breakpoint set in the source code and is the default type of breakpoint.

You can set a source breakpoint in any of the following ways:

In the source editor, click in the left margin next to a line of executable code.
In the source editor, click in a line of code then right-click and choose Toggle Breakpoint (F5).
Choose View Debug Windows Breakpoints to display the Breakpoints window. Then, right-click anywhere in this window and choose New Breakpoint from the context menu. In the New Breakpoint window, select Source for the breakpoint type, then complete the package, source file name, and line number information. The source filename should not include any directory information, but must include the extension of the file. For example:
Application1.java or MyWebApp.jsp

Setting breakpoints after starting a program

You'll probably want to set a least one breakpoint before you start debugging, but it is not necessary. While your program is running in the debugger, you can set a breakpoint. The program pauses when it reaches the breakpoint.