List removeAll() method in Java with Examples
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:
import java.util.*;
public class GfG {
public static void main(String[] args)
{
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.
import java.util.*;
public class GfG {
public static void main(String[] args)
{
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
Last Updated :
02 Jan, 2019
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