Question

How to use Stream.iterate in Java

Answer 1

import java.util.stream.Stream;

public class MyClass {
    public static void main(String args[]) {
        Stream.iterate(0, n -> n + 1)
                .limit(4)
                .forEach(val -> System.out.println(val));
    }
}



/*
run:

0
1
2
3

*/

 

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Answer 2

import java.util.stream.Stream;
 
public class MyClass {
    public static void main(String args[]) {
        Stream.iterate(0, n -> n + 1)
                .filter(val -> val % 2 == 0) 
                .limit(7)
                .forEach(val -> System.out.println(val));
    }
}
 
 
 
/*
run:
 
0
2
4
6
8
10
12
 
*/

 

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