Decorator pattern implicit constructor undefined

I have a program that allows the user to select a type of shape, a color, and draw a filled shape of that type by clicking and dragging. I now want to apply the decorator pattern to my program, but I'm having trouble due to the constructor of the class that I want to apply the decorator to.

I have the following class that I am trying to apply the decorator pattern to AbstractShape.java

public abstract class AbstractShape implements Shape{

protected Point start;
protected Point end;
protected String name;
protected Color color;


public AbstractShape(String name, Color c, Point pt1, Point pt2){
    this.name = name;
    color = c;
    start = pt1;
    end = pt2;
}

It has two subclasses for the different type of shapes that you can make, and uses this interface: Shape.java

 import java.awt.Graphics;
import java.awt.Point;

public interface Shape {

/* Enumeration for the types of shapes */
public enum ShapeType{
    Ellipse,
    Rectangle
}
/* abstract methods */
public abstract void draw(Graphics g);
public abstract String getName();
public abstract Point getStart();
public abstract Point getEnd();
public abstract java.awt.Color getColor();
}

I was attempting to implement the decorator pattern by creating an abstract decorator like this: ShapeDecorator.java

public abstract class ShapeDecorator extends AbstractShape{

private AbstractShape wrappedShape;

public ShapeDecorator(AbstractShape w){
    wrappedShape = w;
}

public abstract void draw(Graphics g);
}

When I try to do this I get the error Implicit super constructor AbstractShape() is undefined. Must explicitly invoke another constructor. How can I fix this so that I can pass a shape to the decorator class?