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:
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public void clear()
Returns Value: This method does not return anything.
Below are the examples to illustrate the clear() method.
Example 1:
// 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("Original 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); } }} |
Output:
Original ArrayListlist : [A, B, C, D, E] New ArrayList : []
Example 2:
// 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("Original 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); } }} |
Output:
Original ArrayListlist : [10, 20, 30, 40, 50] New ArrayList : []
