?? deskclass2.java
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import java.awt.Graphics;
class Desk2
{
private String Color;
private int Length;
private int Width;
private int Height;
Desk2( )
{
Color="";
Length=0;
Width=0;
Height=0;
}
Desk2(String C,int L,int W,int H)
{
Color=C;
Length=L;
Width=W;
Height=H;
}
Desk2(int L,int W,int H)
{
Color="Red";
Length=L;
Width=W;
Height=H;
}
String getColor( ) {return Color;}
int getLength( ) {return Length;}
int getWidth( ) {return Width;}
int getHeight( ) {return Height;}
void setColor(String C){Color=C;}
void setDimension(int L,int W,int H)
{
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+15);
g.drawString("桌子的寬度:"+Width,x,y+30);
g.drawString("桌子的高度:"+Height,x,y+45);
}
}
//該類聲明了一個Desk2對象
public class DeskClass2 extends java.applet.Applet
{
public void paint(Graphics g)
{
Desk2 MyDesk=new Desk2("Red",23,34,25);
int vol;
vol=MyDesk.getLength( )*MyDesk.getWidth( )*MyDesk.getHeight( );
g.drawString("體積是:"+MyDesk.Volume( ),25,20);
g.drawString("體積是:"+vol,25,40);
MyDesk.DeskMessage(g,160,20);
MyDesk.setColor("Yellow");
MyDesk.setDimension(10,11,12);
g.drawString("體積是:"+MyDesk.Volume( ),25,100);
MyDesk.DeskMessage(g,160,100);
Desk2 Desk=new Desk2( );
Desk.DeskMessage(g,300,20);
}
}
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