rectangle.java

Java做的时钟

import java.awt.*;
import java.applet.Applet;
public class Rectangle extends Applet
{
	//定义类成员变量
	private double width;
	private double height;
	private double rectangleLength;
	private double rectangleArea;
	
	//初始化类成员变量
	public Rectangle()
	{
		this.width = 0;
		this.height = 0;
		this.rectangleArea = 0;
		this.rectangleLength = 0;	
	}
	
	//设置类成员变量width的值
	public void setWidth(double d)
	{
		this.width = d;	
	}
	
	//返回类成员变量width的值
	public double getWidth()
	{
		return this.width;	
	}
	
	//设置类成员变量height的值
	public void setHeight(double d)
	{
		this.height = d;	
	}
	
	//返回类成员变量height的值
	public double getHeight()
	{
		return this.height;	
	}
	
	//获取类成员变量rectangleLength的值
	public double getRectangleLength()
	{
		this.rectangleLength = this.height * 2 + this.width * 2;
		return this.rectangleLength;	
	}
	
	//获取类成员变量rectangleArea的值
	public double getRectangleArea()
	{
		this.rectangleArea = this.height * this.width;
		return this.rectangleArea;	
	}	
}