weird syntax error

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * 
 * 
 * @author Michionlion 
 * @version 5/13/2012
 */
public class Basic extends Enemy {

    private int xSpeed;
    private int ySpeed;
    private boolean fire;
    private boolean popUp;
    private PopUp Pop;
    protected static int number;

    public Basic() {
        Pop = new PopUp("Enemy " + number, this);
        number++;
    }

    public void act() {
        popUp = getWorld().getPlayer().getPopUp();
        moves();
        end();
    }

    private void end() {
        if (popUp) getWorld().addObject(Pop, getX() + Pop.getImgWidth()/2, getY() - Pop.getImgHeight()/2);
        else if (!popUp) getWorld().removeObject(Pop);
        fire = false;
        xSpeed = 0;
        ySpeed = 0;
    }

    private void moves() {
            turnTowards(getWorld().getPlayer().getX(), getWorld().getPlayer().getY());
            move(1);
    }
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class RWorld here.
 * 
 * @author Michionlion 
 * @version 5/12/2012
 */
public class RWorld extends World {

    public int height = 400;
    public int width = 600;
    private Player player;

    public RWorld() {
        super(600, 400, 1);
        Greenfoot.setSpeed(55);
        player = new Player();
        addObject(player, width/2, height/2);
    }

    public void act() {

        
    }
    
    public Player getPlayer() {
        return player;
    }
}