How to use the same function in several java classes? -


i can not understand how use same function in several java classes. example, have following function:

public int plus(int one, int two) {   return 1 + two; }

how can use in several other files (classes)? should create in separate class?

if implementation going same (one+two), instead turn static method, this:

class util{     public static int plus(int one, int two) {         return 1 + two;     } }

then can call function 

int result = util.plus(1,1)

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