Java Collection Tutorial - Java List.removeAll(Collection <?> c)

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Syntax

List.removeAll(Collection <?> c) has the following syntax.

boolean removeAll(Collection <?> c)

Example

In the following code shows how to use List.removeAll(Collection <?> c) method.

// w  w w . ja  v  a2  s .  com
import java.util.ArrayList;
import java.util.List;

public class Main {
  public static void main(String args[]) throws Exception {

    List<String> list = new ArrayList<String>();
    list.add("A");
    list.add("A");
    list.add("B");
    list.add("B");
    list.add("C");
    list.add("C");

    List<String> list2 = new ArrayList<String>();
    list2.add("A");
    list2.add("B");
    list2.add("C");
    list.removeAll(list2);

    System.out.println(list);
  }
}

The code above generates the following result.

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