[PeeMcGee]

Conditional breakpoints exist in Intellij and work well with Java in my experience. You craft a little boolean expression on the breakpoint that references variables in-scope, and the debugger skips the breakpoint unless the expression evaluates to true. Every time I've used this feature has been one of the darkest times of my life.

[renewiltord]

It also slows down execution so much. Agreed that it is a dark day if I'm forced to use that. If it's not in library code I just put the condition in an if and put the breakpoint inside it.