[DrJava] (debugger)

[Brian S. <bs...@bs...>]

If we can integrate a debugger, and then if we can make it so that you can
pop to the REPL at a breakpoint (in the scope you stopped in), we will
rule the world.

Imagine that: The ability to stop the program during execution and then to
be able to enter arbitrary statements/expressions! I don't think any
mainstream language has a debugger with such support. (I think some allow
interpretation of expressions w/o side effects.)

-brian