Convert Collection into Array

package example.array;
 
import java.util.ArrayList;
import java.util.Collection;
 
public class PlanetSet {
    public static void main(String args[]) {
	String names[] = { "Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune", "Pluto" };
	Collection planets = new ArrayList();
	for (int i = 0, n = names.length; i < n; i++) {
	    planets.add(names[i]);
	}
	String s[] = (String[]) planets.toArray(new String[0]);
	for (int i = 0, n = s.length; i < n; i++) {
 
	    System.out.println(s[i]);
	}
	planets.remove(names[3]);
	System.out.println(names[1] + " " + planets.contains(names[1]));
	System.out.println(names[3] + " " + planets.contains(names[3]));
    }
}