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Java Convert Collection to ArrayList

Submitted by Deepthi on Sat, 11/13/2010 - 18:38

This Java convert Collection to ArrayList example shows how to convert any collection to ArrayList.

import java.util.ArrayList;
import java.util.HashSet;
 
//Java Convert Collection to ArrayList
 
public class ConverCollectionToArrayList {
    
    public static void main(String args[]){
       
        //Create new HashSet
        HashSet<String> hashSetColors = new HashSet<String>();
        hashSetColors.add("White");
        hashSetColors.add("Black");
        hashSetColors.add("Blue");
       
        /*
         * To convert any Collection to ArrayList use,
         * ArrayList(Collection collection) constructor of Java
         * ArrayList class.
         */
        ArrayList<String> aListColors = new ArrayList<String>(hashSetColors);
       
        //print values of an ArrayList created from Collection
        for(String color: aListColors){
            System.out.println(color);
        }
    }
}
 
/*
Output of above given Java Collection to ArrayList example would be
Black
Blue
White
*/