Java Examples - Collection to Array

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Problem Description:

How to change a collection to an array?

Solution:

Following example shows how to convert a collection to an array by using list.add() and list.toArray() method of Java Util class.

import java.util.*;

public class CollectionToArray{
   public static void main(String[] args){
      List<String> list = new ArrayList<String>();
      list.add("This "); 
      list.add("is "); 
      list.add("a ");
      list.add("good ");
      list.add("program.");
      String[] s1 = list.toArray(new String[0]); 
      for(int i = 0; i < s1.length; ++i){
         String contents = s1[i];
         System.out.print(contents);
     } 
   }
}

Result:

The above code sample will produce the following result.

This is a good program.


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