IntelliJ IDEA Tips & Tricks #38: Auto-refactor imperative for loops to functional streams
We tend to extensively use for loops for programming - that is old-school and so boooring.
Fortunately, IntelliJ IDEA supports automatic refactoring of for loops to streams. For loops can get automatically converted to range and rangeClosed functions. Depending on integer, long etc for looping, it automatically converts to corresponding IntStream, LongStream, etc. If there are if conditions, they become filter conditions or relevant methods like noneMatch or allMatch. Finally, if you are collecting some data into a variable or a collection, the stream equivalent terminal operations like collect(), count(), sum(), etc are called.
Pretty powerful it is - try it out!