import greenfoot.*; // imports Actor, World, Greenfoot, GreenfootImage
import java.util.Random;
public class JumpNRun extends World
{
GreenfootSound backgroundMusic = new GreenfootSound("Backsound.mp3");
public MyWorld(); // This part error it say "invalid method declaration; return type required"
{
super(600, 400, 1);
backgroundMusic.playLoop();
}
