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Java ArrayList contains

Submitted by Sameera on Fri, 11/12/2010 - 19:44

This Java ArrayList contains example shows how to check if particular object is in the ArrayList.

import java.util.ArrayList;
 
//Java ArrayList contains
 
/*
 * This Java ArrayList contains example shows how to check if particular
 * object is in the ArrayList.
 */
public class JavaArrayListContains {
    public static void main(String args[]){
       
        ArrayList<String> aListColors = new ArrayList<String>();
        aListColors.add("Red");
        aListColors.add("Green");
        aListColors.add("Blue");
       
        /*
         * To check if a particular element is present in ArrayList use,
         * boolean contains(Object element)
         * method of Java ArrayList class.
         */
       
        //check if ArrayList contains element "Red"
        boolean found = aListColors.contains("Red");
       
        if(found){
            System.out.println("Red color found in ArrayList");
        }else{
            System.out.println("Red color not found in ArrayList");
        }
    }
}
 
/*
Output of above Java ArrayList contains example would be
Red color found in ArrayList
*/