Spaceship simulator

Battle.java

package galaxy;

import java.util.ArrayList;


public class Battle {
	  public static void main(String[] args)
	  {
		  //Make an arraylist of ships!
		  ArrayList<Spaceship> ships = new ArrayList<Spaceship>();
		  
		  ships.add(new Kestrel());
		  ships.add(new Daliong());
		  ships.add(new Kestrel());
		  ships.add(new IMC());
		  
		  printHealth(ships);
		  
		  System.out.println("The Kestrel attacked the Daliong!");
		  ships.get(0).attack(ships.get(1));
		  
		  printHealth(ships);
		  
	  }
	  
	  public static void printHealth(ArrayList<Spaceship> ships){
		  System.out.println("\n<<<<<Health Report>>>>>>");
		  for(Spaceship s: ships){
			  System.out.println("Health of "+s.getName()+" is "+s.getHealth());
		  }
		  System.out.println("<<<<<END Health Report>>>>>>\n");

	  }
}

Cruiser.java

package galaxy;

import java.awt.Point;

public abstract class Cruiser implements Spaceship {

	private int attack;
	private int HP;
	private int speed;
	private Point position = new Point();
	
	public Cruiser (int givenAttack, int givenHP){
		attack = givenAttack;
		HP = givenHP;
		speed = 20;
		position.setLocation(0, 0);
	}
	
	public Cruiser (int givenAttack, int givenHP, int xPos, int yPos){
		attack = givenAttack;
		HP = givenHP;
		speed = 20;
		position.setLocation(xPos, yPos);
	}
	
	@Override
	public void fly(int x, int y) {
		position.setLocation(x,y);
	}
	
	public int getHealth(){
		return HP;
	}
	
	public void removeHealth(int attack){
		HP -= attack;
	}

	@Override
	public void attack(Spaceship target) {
		if(target.isDestroyed())
			System.out.println("That Ship is destroyed sir!!");
		else
			target.removeHealth(attack);
	}
	
	@Override
	public boolean isDestroyed(){
		if(HP < 0)
			return true;
		else
			return false;
	}

	@Override
	public abstract String getName();
	
}

Daliong.java

package galaxy;

public class Daliong extends Frigate {

	public Daliong() {
		super(5, 9);
	}

	public Daliong(int x, int y) {
		super(5,9,x,y);
	}
	
	@Override
	public String getName() {
		return "Daliong";
	}

}

Frigate.java

package galaxy;

import java.awt.Point;

public abstract class Frigate implements Spaceship {

	private int attack;
	private int HP;
	private int speed;
	private Point position = new Point();
	
	public Frigate (int givenAttack, int givenHP){
		attack = givenAttack;
		HP = givenHP;
		speed = 15;
		position.setLocation(0, 0);
	}
	
	public Frigate (int givenAttack, int givenHP, int xPos, int yPos){
		attack = givenAttack;
		HP = givenHP;
		speed = 15;
		position.setLocation(xPos, yPos);
	}
	
	@Override
	public void fly(int x, int y) {
		position.setLocation(x,y);
	}
	
	public int getHealth(){
		return HP;
	}
	
	public void removeHealth(int attack){
		HP -= attack;
	}

	@Override
	public void attack(Spaceship target) {
		if(target.isDestroyed())
			System.out.println("That Ship is destroyed sir!!");
		else
			target.removeHealth(attack);
	}
	
	@Override
	public boolean isDestroyed(){
		if(HP < 0)
			return true;
		else
			return false;
	}

	@Override
	public abstract String getName();
	
}

IMC.java

package galaxy;

public class IMC extends Cruiser {

	public IMC() {
		super(2, 13);
	}

	public IMC(int x, int y) {
		super(2,13,x,y);
	}
	
	@Override
	public String getName() {
		return "IMC";
	}

}

Kestrel.java

package galaxy;

public class Kestrel extends Frigate {

	public Kestrel() {
		super(2, 13);
	}

	public Kestrel(int x, int y) {
		super(2,13,x,y);
	}
	
	@Override
	public String getName() {
		return "Kestrel";
	}

}

Spaceship.java

package galaxy;

public interface Spaceship {
	
	public void fly(int x, int y);
	
	public void attack(Spaceship target);
	
	public int getHealth();
	
	public void removeHealth(int amt);
	
	public boolean isDestroyed();
	
	public String getName();
}