Java 8 - For Each and removeIf

Question

I am trying to perform the operation using the ForEach in Java 8 by combining the removeIf method. But I am getting the Error.

I am not able to combine the forEach and removeIf in the following program:

public class ForEachIterator {

    public static void main(String[] args) {
        List<Integer> ints = new ArrayList<Integer>();
        for (int i = 0; i < 10; i++) {
            ints.add(i);
        }
        System.out.println(ints);
        // Getting the Error in next line
        ints.forEach(ints.removeIf(i -> i%2 ==0));
        System.out.println(ints);
    }
}

Answer 1

There's no need for the forEach, the Lambda expression will work on all elements of the set

ints.removeIf(i -> i%2==0)

removeIf: "Removes all of the elements of this collection that satisfy the given predicate"

Simply...

For each element (i) in the set (ints), remove it if (removeIf) the predicate (i%2==0) is true for this element (i). This will act on the original set and return true if any elements where removed.