deskclass1.java

我在学习JAVA的讲义

import java.awt.Graphics;
//定义一个Desk1类
class Desk1
{
    private String Color;
    private int Length;
    private int Width;
    private int Height;

    Desk1(String C,int L,int W,int H)
    {
        Color=C;
        Length=L;
        Width=W;
        Height=H;
    }
    Desk1(int L,int W,int H)
    {
        Color="Yellow";
        Length=L;
        Width=W;
        Height=H;
    }

    //计算桌子的体积
    int Volume( )
    {
        return Length*Width*Height;
    }
    void DeskMessage(Graphics g,int x,int y)
    {
        g.drawString("桌子的颜色："+Color,x,y);
        g.drawString("桌子的长度："+Length,x,y+10);
        g.drawString("桌子的宽度："+Width,x,y+20);
        g.drawString("桌子的高度："+Height,x,y+30);
    }
}
//该类声明一个Desk1对象
public class DeskClass1 extends java.applet.Applet
{
    public void paint(Graphics g)
    {
        Desk1 MyDesk1=new Desk1("red",23,34,25);
        Desk1 MyDesk2=new Desk1(20,30,40);
        int MyDesk1Volume,MyDesk2Volume;
        //计算桌子的体积
        MyDesk1Volume=MyDesk1.Volume();
        MyDesk2Volume=MyDesk2.Volume();
        g.drawString("体积是："+MyDesk1Volume,20,20);
        MyDesk1.DeskMessage(g,160,20);
        g.drawString("体积是："+MyDesk2Volume,20,100);
        MyDesk2.DeskMessage(g,160,100);
    }
}