Java Classes for reuse or ideas

//the main vector controlling class that can be very useful
import java.awt.Shape;

/**
 * Write a description of class BaseVectorShape here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
//base vector shape class for polygonal shapes
public class BaseVectorShape
{
    //variables
    private Shape shape;
    private boolean alive;
    private double x,y;
    private double velX,velY;
    private double moveAngle, faceAngle;

    //accessor methods
    public Shape getShape() { return shape; }
    public boolean isAlive() { return alive; }
    public double getX() { return x; }
    public double getY() { return y; }
    public double getVelX() { return velX; }
    public double getVelY() { return velY; }
    public double getMoveAngle() { return moveAngle; }
    public double getFaceAngle() { return faceAngle; }

    //mutator and helper methods
    public void setShape(Shape shape) { this.shape = shape; }
    public void setAlive(boolean alive) { this.alive = alive; }
    public void setX(double x) { this.x = x; }
    public void incX(double i) { this.x += i; }
    public void setY(double y) { this.y = y; }
    public void incY(double i) { this.y += i; }
    public void setVelX(double velX) { this.velX = velX; }
    public void incVelX(double i) { this.velX += i; }
    public void decVelX(double i) { this.velX -= i; }
    public void setVelY(double velY) { this.velY = velY; }
    public void incVelY(double i) { this.velY += i; }
    public void decVelY(double i) { this.velY -= i; }
    public void setFaceAngle(double angle) { this.faceAngle = angle;}
    public void incFaceAngle(double i) { this.faceAngle += i; }
    public void setMoveAngle(double angle) { this.moveAngle = angle; }
    public void incMoveAngle(double i) { this.moveAngle += i; }

    //default constructor
    BaseVectorShape()
    {
        setShape(null);
        setAlive(false);
        setX(0.0);
        setY(0.0);
        setVelX(0.0);
        setVelY(0.0);
        setMoveAngle(0.0);
        setFaceAngle(0.0);

    }

}


//Remember the these are separate classes and not to have the code in the same class
//Player's ship class I'll let you figure out the other two sprite classes
import java.awt.Polygon;
import java.awt.Rectangle;

/**
 * Write a description of class ShipClass here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
//Ship class - polygonal shape of the player's ship
public class ShipClass extends BaseVectorShape
{
    //define the ship polygon
    private int[] shipx = { -6, -3 , 0, 3, 6, 0 };
    private int[] shipy = { 6, 7, 7, 7, 6, -7 };

    //bounding rectangle
    public Rectangle getBounds()
    {
        Rectangle r;
        r = new Rectangle( (int)getX() - 6, (int)getY() - 6, 12, 12);
        return r;
    }

    ShipClass()
    {
        setShape(new Polygon(shipx, shipy, shipx.length));
        setAlive(true);
    }
}


//Java Applet this thing runs on
//Will be posted in another file