import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) /** * Write a description of class StartWorld here. * * @author (your name) * @version (a version number or a date) */ public class StartWorld extends World { /** * Constructor for objects of class StartWorld. * */ public StartWorld() { // Create a new world with 600x400 cells with a cell size of 1x1 pixels. super(400, 600, 1); prepare(); } /** * Prepare the world for the start of the program. * That is: create the initial objects and add them to the world. */ private void prepare() { Button button = new Button(); addObject(button,200,350); button.setImage("Start.png"); } }