What does the syntax mean in Java: new Stream(){ … }?

Question

I have encountered the following Java syntax that I don\'t recognize.

This part is fine:

public abstract class Stream implements Iterator

        

Answer 1

ones = new Stream() {
public Integer next() {
return 1; }
};

Assigns a new instance of an anonymous implementation of Stream (that contains a virtually unlimited number of 1s. You may find more on anonymous classes in Java In A Nutshell