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Java arraylist to array

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This section demonstrates how to use Java ArrayList that can be converted into array

  • Java arrayList has method toArray()
  • It converts the given list into the array of Object.
  • It needs to be casted to the required data type.
  • Then it can be used properly.


Example of Java Arraylist to Array

import java.util.ArrayList;

public class List1 {
    public static void main(String[] args) {
     int ar[]={444,222,333,111};
     ArrayList list=new ArrayList();
     list.add(ar[0]);
     list.add(ar[1]);
     list.add(ar[2]);
     list.add(ar[3]);
     Object obj[]=list.toArray();
     for(Object  x:obj)
     {
         System.out.println((Integer)x-1);
     }
  }
}

Output

443
221
332
110

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Posted on: October 23, 2009 If you enjoyed this post then why not add us on Google+? Add us to your Circles

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