AbstractList clear() method in Java with Examples

The clear() method of java.util.AbstractList class is used to remove all of the elements from this list. The list will be empty after this call returns.

Syntax:

public void clear()

Returns Value: This method does not return anything.

Below are the examples to illustrate the clear() method.

Example 1:



filter_none

edit
close

play_arrow

link
brightness_4
code

// Java program to demonstrate
// clear() method
// for String value
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {
  
        try {
  
            // Creating object of AbstractList<String>
            AbstractList<String>
                arrlist1 = new ArrayList<String>();
  
            // Populating arrlist1
            arrlist1.add("A");
            arrlist1.add("B");
            arrlist1.add("C");
            arrlist1.add("D");
            arrlist1.add("E");
  
            // print the ArrayList
            System.out.println("Orignal ArrayListlist : "
                               + arrlist1);
  
            // Removing all the elements
            // using clear() method
            arrlist1.clear();
  
            // print the new ArrayList
            System.out.println("New ArrayList : "
                               + arrlist1);
        }
  
        catch (NullPointerException e) {
            System.out.println("Exception thrown : "
                               + e);
        }
    }
}

chevron_right


Output:

Orignal ArrayListlist : [A, B, C, D, E]
New ArrayList : []

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Java program to demonstrate
// clear() method
// for Integer value
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {
  
        try {
  
            // Creating object of AbstractList<Integer>
            AbstractList<Integer>
                arrlist1 = new ArrayList<Integer>();
  
            // Populating arrlist1
            arrlist1.add(10);
            arrlist1.add(20);
            arrlist1.add(30);
            arrlist1.add(40);
            arrlist1.add(50);
  
            // print the ArrayList
            System.out.println("Orignal ArrayListlist : "
                               + arrlist1);
  
            // Removing all the elements
            // using clear() method
            arrlist1.clear();
  
            // print the new ArrayList
            System.out.println("New ArrayList : "
                               + arrlist1);
        }
  
        catch (NullPointerException e) {
            System.out.println("Exception thrown : " + e);
        }
    }
}

chevron_right


Output:

Orignal ArrayListlist : [10, 20, 30, 40, 50]
New ArrayList : []


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.