mycircle.java

来自「java课程的资料以及实验的代码」· Java 代码 · 共 19 行

public class MyCircle implements Area
{
double radius;
MyCircle(double r)
{
	this.radius=r;
}
public double calculateArea()
{
	return 3.14159*radius*radius;
}
public static void main(String args[])
{
	MyCircle mc=new MyCircle(15);
	System.out.println("The area of circle is:"+mc.calculateArea());
}
 

}