.equal and ==

private Actor ShadowPoseChoice;

public Minigame3()
{ 
    //world size and back ground set up
    super(600, 400, 1);
    ArrayList<String> imageNums = new ArrayList<String>();
    for (int i=1; i<6; i++) imageNums.add(""+i); // lists numbers of images
    ArrayList<String> shadowNums = new ArrayList<String>(); // for numbers of 3 picked images
    for (int i=0; i<3; i++) // loop to choose and list 3 different random image numbers
    {
        int rand = Greenfoot.getRandomNumber(imageNums.size());
        shadowNums.add(imageNums.remove(rand)); // transfer one random image number between lists
    }
    int rand = Greenfoot.getRandomNumber(shadowNums.size()); // randomly select a choice pose image number
    for (int i=0; i<3; i++)
    {
        Actor actor = new SimpleActor();
        actor.setImage("UmarunShadowPose"+shadowNums.get(i)+".png");
        actor.getImage().scale(100, 100);
        addObject(actor, 120+180*i, 133);
        if (rand == i)
        {
            ShadowPoseChoice = actor;
            Actor poseChoice = new SimpleActor();
            poseChoice.setImage("UmarunPose"+shadowNums.get(i)+".png");
            addObject(poseChoice, 300, 266);
        }
    }
}

public void act()
{
    if (Greenfoot.mouseClicked(ShadowPoseChoice))
    {
        removeObjects(getObjects(Actor.class));
        // add yen here
    }
    else if (Greenfoot.mouseClicked(null) && Greenfoot.getMouseInfo.getActor() != null)
    {
        removeObject(getObjects(Actor.class));
    }
}

[code]else if (Greenfoot.mouseClicked(null) && Greenfoot.getMouseInfo().getActor() != null)
    {
        removeObjects(getObjects(Actor.class));
    }
}