I'm a strong believer in whitespaces instead of tab characters, so I want to avoid these.
My previous Java IDE was able to understand that 4 space characters should roughly represent a tab character. This involves NOT being able to jump directly into the middle of such 4 spaces, and that deleting the start of a 4-space-block deletes the whole 4 space characters. Moving with the arrow keys will thus jump between the 4 spaces blocks.
Is it possible to achieve this behavior in IntelliJ IDEA? So far I've been extremely happy with this IDE.