Intellij idea tests compilation takes too long (compared with Eclipse)

Question

When I "junit" some class, compilation in Idea takes about 4-5 sec. In Eclipse it takes milliseconds.

What should I do to speed up Intellij Idea compilation for tests?

Answer 1

Eclipse compiles on the fly (on save), so it does not have to do anything but to start the tests. Idea does not. Before starting the tests it has to make (compile all changed classes of the whole project). It is also not possible to start a test in idea when there is any compile error elsewhere in the project.

Answer 2

There is plugin in Idea plugin repository which solve exactly this problem!