Hi,

I have the following error when compiling my java code

Shape.java:45: error: non-static variable this cannot be referenced from a static context

Circle circle = new Circle();

^

Shape.java:46: error: non-static variable this cannot be referenced from a static context

Ambiguous ambiguous = new Ambiguous();

^

Shape.java:42: error: Illegal static declaration in inner class JavaShape.IntroductionOverriding

public static void main(String[] args)

^

modifier 'static' is only allowed in constant variable declarations

3 errors

Can you fix my error?

import java.awt.*;

import java.util.*;

class JavaShape

{

public abstract class Shape

{

public void printMe()

{

System.out.println("I'm a shape.");

}

public abstract double computeArea();

}

public class Circle extends Shape

{

private double rad = 5;

public void printMe()

{

System.out.println("I'm a circle.");

}

public double computeArea()

{

return rad * rad * 3.15;

}

}

public class Ambiguous extends Shape{

private double area = 10;

public double computeArea()

{

return area;

}

}

public class IntroductionOverriding

{

public static void main(String[] args)

{

Shape[] shapes = new Shape[2];

Circle circle = new Circle();

Ambiguous ambiguous = new Ambiguous();

shapes[0] = circle;

shapes[1] = ambiguous;

for (Shape s: shapes)

{

s.printMe();

System.out.println(s.computeArea());

}

}

}

}