?? deskclass1.java
字號:
import java.awt.Graphics;
//定義一個Desk1類
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;
}
//計算桌子的體積
int Volume( )
{
return Length*Width*Height;
}
void DeskMessage(Graphics g,int x,int y)
{
g.drawString("桌子的顏色:"+Color,x,y);
g.drawString("桌子的長度:"+Length,x,y+10);
g.drawString("桌子的寬度:"+Width,x,y+20);
g.drawString("桌子的高度:"+Height,x,y+30);
}
}
//該類聲明一個Desk1對象
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;
//計算桌子的體積
MyDesk1Volume=MyDesk1.Volume();
MyDesk2Volume=MyDesk2.Volume();
g.drawString("體積是:"+MyDesk1Volume,20,20);
MyDesk1.DeskMessage(g,160,20);
g.drawString("體積是:"+MyDesk2Volume,20,100);
MyDesk2.DeskMessage(g,160,100);
}
}
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