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Java Synchronized ArrayList

Submitted by Deepthi on Sat, 11/13/2010 - 18:29

By default, ArrayList object is not synchronized. This Java example shows how to get Synchronized ArrayList.

import java.util.ArrayList;
import java.util.Collections;
 
//Java Synchronized ArrayList
 
public class JavaSynchronizedArrayList {
    
    public static void main(String args[]){
       
        /*
         * By default, ArrayList object is not synchronized. That means it is not
         * thread safe. We need synchronized ArrayList if it is being modified
         * by multiple threads at a time.
         *
         * To get synchronized ArrayList, use
         * Collections.synchronizedList(List list) method.
         */
       
        //this will give us synchronized ArrayList object
        ArrayList aListCounter = (ArrayList) Collections.synchronizedList(new ArrayList());
    }
}