circletest.java

来自「这套JSP学习资料」· Java 代码 · 共 17 行

import java.io.*;

public class CircleTest
{
	int radius;

	public CircleTest(){radius=6500;}

	public int getRadius(){return radius;}

	public void setRadius(int newRadius){radius=newRadius;}

	public double circleArea(){return Math.PI*radius*radius;}

	public double circlLength(){return 2.0*Math.PI*radius;}
}