package?text;
public?class?Vehicle?{	
public?String?name;	
public?String?tWay;	
public?int?tNum;	
public?void?show()?{		
System.out.println("父類方法不會執行！");	
}
}

package?text;
public?class?Steamship?extends?Vehicle?{	
public?Streamship(){
name?=?"輪船";		
tNum?=?400;		
tWay?=?"海上";
}
public?void?show()?{				
System.out.println(name?+?"在"?+?tWay?+?",可以運輸"?+?tNum?+?"人。");	
}
}

package?text;
public?class?InitialVehicle?{	
public?static?void?main(String[]?args)?{		
Vehicle?s=new?Steamship();		
s.show();				
}
}

另外兩個飛機和公車的子類是一樣的就不貼上來了。