CopyOnWriteArrayList - remove, get, contains and set methods program







CopyOnWriteArrayList - remove, get, contains and set methods program.



import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* Copyright (c), AnkitMittal JavaMadeSoEasy.com
*/
public class CopyOnWriteArrayListTest {
   public static void main(String args[]) {
          // creates array with initial capacity of 10.
          List<String> copyOnWriteArrayList = new CopyOnWriteArrayList<String>();
          copyOnWriteArrayList.add("ankit");
          copyOnWriteArrayList.add("mittal");
          copyOnWriteArrayList.add("javaMadeSoEasy");
          System.out.println("copyOnWriteArrayList = "+copyOnWriteArrayList);
         
          System.out.println("\n--------get element at 1st index i.e. mittal");
          System.out.println("element at 1st index = "+copyOnWriteArrayList.get(1));
         
          System.out.println("\n--------contains element  ");
          System.out.println("copyOnWriteArrayList.contains = "+copyOnWriteArrayList.contains("mittal"));
         
          System.out.println("\n--------Remove element at 1st index i.e. mittal");
          copyOnWriteArrayList.remove(1);  
          System.out.println("copyOnWriteArrayList = "+copyOnWriteArrayList);
          System.out.println("\n---------Remove ankit from list");
          copyOnWriteArrayList.remove("ankit");
          System.out.println("copyOnWriteArrayList = "+copyOnWriteArrayList);
          System.out.println("\n---------Set newVal at 0th index");
          copyOnWriteArrayList.set(0,"newVal"); //javaMadeSoEasy will be replace by newVal
          System.out.println("copyOnWriteArrayList = "+copyOnWriteArrayList);
         
         
         
         
         
   }
}
/*OUTPUT
copyOnWriteArrayList = [ankit, mittal, javaMadeSoEasy]
--------get element at 1st index i.e. mittal
element at 1st index = mittal
--------contains element
copyOnWriteArrayList.contains = true
--------Remove element at 1st index i.e. mittal
copyOnWriteArrayList = [ankit, javaMadeSoEasy]
---------Remove ankit from list
copyOnWriteArrayList = [javaMadeSoEasy]
---------Set newVal at 0th index
copyOnWriteArrayList = [newVal]
*/



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CopyOnWriteArrayList - iterate using iterator, listIterator, Enumeration and enhanced for loop


CopyOnWriteArrayList - fail-safe or fail-fast iteration using iterator, listIterator, Enumeration and enhanced for loop


CopyOnWriteArrayList - isEmpty, size and clear methods program



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