APPEARING OBJECT

import greenfoot.*;

public class A extends Actor
{
    private int timer = Greenfoot.getRandomNumber(100)+100; // value to be maintained throughout the life of the actor
    
    public A() // constructor for class objects
    { // stuff that only needs done once while actor is not yet in world
        GreenfootImage image = getImage();
        image.scale(330, 150);
    }
    
    public void act()
    { // actions performed while in world
        setLocation (getX(), getY()+7); // moving
        timer--; // running timer
        if (timer == 0) // spawning C.java object
        {
            addObject(new C.java(), Greenfoot.getRandomNumber(getWidth()), Greenfoot.getRandomNumber(getHeight())); // adds a C.java object
            timer = Greenfoot.getRandomNumber(100)+100; // resets timer
        }
        if (Greenfoot.isKeyDown("a")) getWorld().removeObject(this); // removing this actor on 'a' press
    }
}

 import greenfoot.*;
 
      public class A extends Actor

getWorld().addObject(new C.java(), Greenfoot.getRandomNumber(getWorld().getWidth()), Greenfoot.getRandomNumber(getWorld().getHeight()));

/**
 * Write a description of class A here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class A extends Actor
{
    /**
     * Act - do whatever the A wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        
      public class A extends Actor
   {
    private int timer = Greenfoot.getRandomNumber(100)+100; // value to be maintained throughout the life of the actor
     
    public A() // constructor for class objects
    { // stuff that only needs done once while actor is not yet in world
        GreenfootImage image = getImage();
        image.scale(330, 150);
    }
     
    public void act()
    { // actions performed while in world
        setLocation (getX(), getY()+7); // moving
        timer--; // running timer
        if (timer == 0) // spawning C.java object
        {
            addObject(new C.java(), Greenfoot.getRandomNumber(getWidth()), Greenfoot.getRandomNumber(getHeight())); // adds a C.java object
            timer = Greenfoot.getRandomNumber(100)+100; // resets timer
        }
        if (Greenfoot.isKeyDown("a")) getWorld().removeObject(this); // removing this actor on 'a' press
    }
   }
  }
}

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

/**
 * Write a description of class A here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class A extends Actor
{
    private int timer = Greenfoot.getRandomNumber(100)+100; // value to be maintained throughout the life of the actor
      
    public A() // constructor for class objects
    { // stuff that only needs done once while actor is not yet in world
        GreenfootImage image = getImage();
        image.scale(330, 150);
    }
      
    public void act()
    { // actions performed while in world
        setLocation (getX(), getY()+7); // moving
        timer--; // running timer
        if (timer == 0) // spawning C.java object
        {
            addObject(new C (), Greenfoot.getRandomNumber(getWidth()), Greenfoot.getRandomNumber(getHeight())); // adds a C object
            timer = Greenfoot.getRandomNumber(100)+100; // resets timer 
        }
        if (Greenfoot.isKeyDown("a")) getWorld().removeObject(this); // removing this actor on 'a' press
    }
  }
  

 

getWorld().addObject(new C(), Greenfoot.getRandomNumber(getWorld().getWidth()), Greenfoot.getRandomNumber(getWorld().getHeight()));