Debugging is slow under JDK 1.3.0

Abstract: Debugging is slow under JDK 1.3.0

Question:

Debugging is slow and seems to pause for a long time when moving between breakpoints. Is there a way to workaround this issue?

Answer:

If you are using JDK 1.3.0, debugging using the classic VM is much faster than debugging with HotSpot. If you see a noticeable slowdown in your program when you debug it, try adding the -classic option in the VM parameters field before you debug.