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List removeAll() method in Java with Examples

Last Updated : 02 Jan, 2019
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This method is used to remove all the elements present in the collection from the specified list. Syntax:
boolean removeAll(Collection c)
Parameters: This method has only argument, collection of which elements are to be removed from the given list. Returns: This method returns True if elements are removed and list changes. Below programs show the implementation of this method. Program 1: Java
// Java code to show the implementation of // removeAll method in list interface import java.util.*; public class GfG {  // Driver code  public static void main(String[] args)  {  // Initializing a list of type Linkedlist  List<Integer> l = new LinkedList<>();  l.add(10);  l.add(30);  l.add(50);  l.add(70);  l.add(90);  System.out.println(l);  ArrayList<Integer> arr = new ArrayList<>();  arr.add(30);  arr.add(50);  l.removeAll(arr);  System.out.println(l);  } } 
Output:
 [10, 30, 50, 70, 90] [10, 70, 90] 
Program 2: Below is the code to show implementation of list.removeAll() using Linkedlist. Java
// Java code to show the implementation of // removeAll method in list interface import java.util.*; public class GfG {  // Driver code  public static void main(String[] args)  {  // Initializing a list of type Linkedlist  List<String> l = new LinkedList<>();  l.add("10");  l.add("30");  l.add("50");  l.add("70");  l.add("90");  System.out.println(l);  ArrayList<String> arr = new ArrayList<>();  arr.add("30");  arr.add("50");  l.removeAll(arr);  System.out.println(l);  } } 
Output:
 [10, 30, 50, 70, 90] [10, 70, 90] 
Reference: Oracle Docs

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