circlearea.java

来自「JAVA编程思想源代码 值得一下 很难找的」· Java 代码 · 共 17 行

package chapter7;

public class CircleArea implements Circle {

	double radius = 1.5;

	public double area() {
		return PI_VALUE * radius * radius;
	}

	public static void main(String[] args) {

		CircleArea c = new CircleArea();
		System.out.println("The area of the circle is" + c.area());
	}
}