removeIf()

Example

Remove all even numbers from a list:

import java.util.ArrayList;

public class Main { 
  public static void main(String[] args) { 
    ArrayList<Integer> list = new ArrayList<Integer>();
numbers.add(5);
    numbers.add(9);
    numbers.add(8);
    numbers.add(6);
    numbers.add(1);
    numbers.removeIf( n -> n % 2 == 0 );
    System.out.println(numbers);
  }
}

Definition and Usage

The removeIf() method eliminates all elements from the list for which a condition holds true. This condition is determined by the return value of a lambda expression that aligns with the test() method of Java’s Predicate interface.

Refer to our Java Lambda Expression tutorial for insights into lambda expressions.

Syntax

public boolean removeIf(Predicate condition)

Parameter Values

Technical Details