Pass a method to another method at run time. JAVA

Question

several functions want to pass each one to another method without recoding the method. OOP is confusing describing this.

Answer 1

This will not confusing for programmers because this is a feature it's Java not a disadvantage

Answer 2

That's what lambdas are for.

Answer 3

I have read a lot on lambdas. Will read more. Thanks.