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Java ArrayList Clear or Remove All Elements

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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