Errors

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

/**
 * Write a description of class world here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class world extends World
{
BazookaMan bazookaman;
boolean x = bazookaman.x;

    /**
     * Constructor for objects of class world.
     * 
     */
    public world()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(600, 500, 1); 

        prepare();
        CheckAlive(x);
       }
    
       
    /**
     * Prepare the world for the start of the program. That is: create the initial
     * objects and add them to the world.
     */
    private void prepare()
    {
        BazookaMan bazookaman = new BazookaMan();
        addObject(bazookaman, 40, 35);
        bazookaman.setLocation(41, 35);
        bazookaman.setLocation(57, 32);
        bazookaman.setLocation(44, 34);
    }
   void CheckAlive(boolean x){
       if(x = true){
    removeObject(bazookaman);}
}
}

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

/**
 * Write a description of class BazookaMan here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class BazookaMan extends Mover
{
Bazooka bazooka;
 public boolean x;
 
    
    public void act() 
    {
        if (Greenfoot.isKeyDown("left")){
            setRotation(getRotation()- 5);
            
        }
        if (Greenfoot.isKeyDown("right")){
            setRotation(getRotation()+ 5);
            
        }
        if (Greenfoot.isKeyDown("z")){
            move(1);
            
        }
         if ("space".equals(Greenfoot.getKey())){
            fire();
            
        }
    }    
    private void fire(){
        
        bazooka = new Bazooka();
        getWorld().addObject(bazooka,getX(),getY());
        bazooka.setRotation(getRotation());
        
            
        
    }
   
    
}

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

/**
 * Write a description of class Bazooka here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Bazooka extends Mover
{
    /**
     * Act - do whatever the Bazooka wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        move(10.0);
    }    
}