package cn.edu.bjut.chapter4;

interface Drawable {
	void draw(); 
	
	default void msg() {
		System.out.println("default method");
	}
	
	static int cube (int x) {
		return (x * x * x); 
	}
}

class Circle implements Drawable {
	@Override
	public void draw() {
		System.out.println("drawing circle");
	}
}

public class InterfaceNewFeatureTester {
	public static void main(String[] args) {
		Drawable d = new Circle(); 
		d.draw();
		d.msg(); 
		System.out.println(Drawable.cube(3));
	}
}