ArrayList: toArray(T[] a) : ArrayList « java.util « Java by API






  1. Java by API
  2. java.util
  3. ArrayList

ArrayList: toArray(T[] a)

  
/**
 *Output: 
Contents of al: [1, 2, 3, 4]
Sum is: 10 */

import java.util.ArrayList;

public class MainClass {
  public static void main(String args[]) {

    ArrayList<Integer> al = new ArrayList<Integer>();


    al.add(1);
    al.add(2);
    al.add(3);
    al.add(4);

    System.out.println("Contents of al: " + al);

    Integer ia[] = new Integer[al.size()];
    ia = al.toArray(ia);

    int sum = 0;

    for (int i : ia)
      sum += i;

    System.out.println("Sum is: " + sum);
  }
}








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