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Java ArrayList Clear or Remove All Elements
Submitted by Deepthi on Sat, 11/13/2010 - 18:46
This Java ArrayList Clear or Remove all elements example shows how to remove all elements from an ArrayList using clear method.
  1. import java.util.ArrayList;
  2.  
  3. //Java ArrayList Clear or Remove All Elements
  4.  
  5. public class JavaClearArrayList {
  6.     public static void main(String args[]){
  7.        
  8.         //create new ArrayList
  9.         ArrayList<String> alistNumbers = new ArrayList<String>();
  10.         alistNumbers.add("1");
  11.         alistNumbers.add("2");
  12.         alistNumbers.add("3");
  13.        
  14.         System.out.println("ArrayList before clear or remove all: " + alistNumbers);
  15.        
  16.         /*
  17.          * To clear or remove all elements of Java ArrayList use,
  18.          * void clear() method of Java ArrayList class.
  19.          */
  20.        
  21.         //remove all elements of ArrayList
  22.         alistNumbers.clear();
  23.        
  24.         System.out.println("ArrayList after clear or remove all: " + alistNumbers);
  25.     }
  26. }
  27.  
  28. /*
  29. Output of above given Java ArrayList clear or Remove all example would be
  30. ArrayList before clear or remove all: [1, 2, 3]
  31. ArrayList after clear or remove all: []
  32. */
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