Stepping in source code executes just one instruction or line of code in the debuggee at a time. This is useful for finding exactly where a particular condition occurs in the code. The actions described below are accessible via the named commands as well as through the "Step" menu items.
There are several commands for stepping through source code. They are described as follows.
step
next
stepi
nexti
step out|up
At some point or another you will single-step into the Java core
classes. This will happen often enough that you wish you could
avoid stepping into such classes. Fortunately, JSwat provides the
exclude
command for just this purpose. You can add
individual classes and entire packages to the list of class
filters. During single-stepping, the debugger will not step into
these classes. See the exclude command help for more
information.