[spreiti]

In Intellij you can add breakpoints to when lambdas are executed [0]. You can also print logs instead of suspending the threads [1].

[0] https://www.jetbrains.com/help/idea/using-breakpoints.html#s...

[1] https://www.jetbrains.com/help/idea/using-breakpoints.html#l...

[eitland]

You can also visualize streams.

I do not prefer IntelliJ (I want a Hilux as my car and NetBeans for IDE) but credit where credit is due.