import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;


public class WrapperExample {

	public static void main(String[] args) {
		int i = 10;
		Integer someInt = i; // boxing
		int j = someInt; // unboxing
		ArrayList list = new ArrayList();
		for (int k = 0; k < 10; k ++) {
			int rand = (int) (Math.random() * 1000);
			list.add(rand);  // rand is boxed into an Integer object
		}
		
		// print the list
		System.out.println("list = " + Arrays.toString(list.toArray()));
		
		// sort the list
		Collections.sort(list);
		
		// print the list
		System.out.println("list = " + Arrays.toString(list.toArray()));
	}

}