標題:
建構子 (二)
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作者:
tonyh
時間:
2015-1-24 17:03
標題:
建構子 (二)
本帖最後由 tonyh 於 2015-1-24 17:04 編輯
定義帶不同參數數量的建構子
public class ch58 //主類別
{
public static void main(String args[]) //主方法
{
Car bus=new Car("公車",6,40); //在Car類別下,生成一個名為bus的實體物件
//Car truck=new Car("卡車");
Car truck=new Car(8,3);
//Car truck=new Car();
truck.name="卡車";
Car taxi=new Car("計程車",4,5);
System.out.println(bus.name+"有"+bus.wheel+"個輪子,可載"+bus.carry+"人.");
System.out.println(truck.name+"有"+truck.wheel+"個輪子,可載"+truck.carry+"人.");
System.out.println(taxi.name+"有"+taxi.wheel+"個輪子,可載"+taxi.carry+"人.");
}
}
class Car //定義Car類別
{
String name;
int wheel;
int carry;
Car() //定義不帶任何參數的建構子
{
}
Car(String name) //定義只帶一個參數的建構子
{
this.name=name;
}
Car(int wheel, int carry) //定義只帶二個參數的建構子
{
this.wheel=wheel;
this.carry=carry;
}
Car(String name, int wheel, int carry) //定義帶三個參數的建構子
{
this.name=name;
this.wheel=wheel;
this.carry=carry;
}
}
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作者:
周雍程
時間:
2015-1-24 17:04
public class ch57
{
public static void main(String args[])
{
Car bus=new Car("公車",6,40);
Car truck=new Car(8,3);
truck.name="卡車";
Car taxi=new Car("計程車",4,5);
System.out.println(bus.name+"有"+bus.wheel+"個輪子,可載"+bus.carry+"人.");
System.out.println(truck.name+"有"+truck.wheel+"個輪子,可載"+truck.carry+"人.");
System.out.println(taxi.name+"有"+taxi.wheel+"個輪子,可載"+taxi.carry+"人.");
}
}
class Car
{
String name;
int wheel;
int carry;
Car()
{
}
Car(String name)
{
this.name=name;
}
Car(int wheel,int carry)
{
this.wheel=wheel;
this.carry=carry;
}
Car(String name,int wheel,int carry)
{
this.name=name;
this.wheel=wheel;
this.carry=carry;
}
}
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作者:
張峻瑋
時間:
2015-1-24 17:05
public class ch58
{
public static void main(String args[])
{
Car bus=new Car("公車",6,40);
Car truck=new Car(8,3);
truck.name="卡車";
Car taxi=new Car("計程車",4,5);
System.out.println(bus.name+"有"+bus.wheel+"個輪子,可載"+bus.carry+"人.");
System.out.println(truck.name+"有"+truck.wheel+"個輪子,可載"+truck.carry+"人.");
System.out.println(taxi.name+"有"+taxi.wheel+"個輪子,可載"+taxi.carry+"人.");
}
}
class Car
{
String name;
int wheel;
int carry;
Car()
{
}
Car(String name)
{
this.name=name;
}
Car(int wheel,int carry)
{
this.wheel=wheel;
this.carry=carry;
}
Car(String name,int wheel,int carry)
{
this.name=name;
this.wheel=wheel;
this.carry=carry;
}
}
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作者:
劉得恩
時間:
2015-1-24 17:05
public class ch58
{
public static void main(String args[])
{
Car x[]={new Car("公車"),new Car(8,3),new Car("計程車",4,5)};
x[0].wheel=6;
x[0].carry=40;
x[1].name="卡車";
for(int i=0;i<3;i++)
System.out.println(x[i].name+"有"+x[i].wheel+"個輪子,可載"+x[i].carry+"人.");
}
}
class Car
{
String name;
int wheel;
int carry;
Car()
{
}
Car(String n)
{
name=n;
}
Car(int w,int c)
{
wheel=w;
carry=c;
}
Car(String n,int w,int c)
{
name=n;
wheel=w;
carry=c;
}
}
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作者:
張郁庭
時間:
2015-1-24 17:06
public class ch58
{
public static void main(String args[])
{
Car bus=new Car("公車",6,40);
Car truck=new Car(8,3);
truck.name="卡車";
Car taxi=new Car("計程車",4,5);
System.out.println(bus.name+"有"+bus.wheel+"個輪子,可載"+bus.carry+"人.");
System.out.println(truck.name+"有"+truck.wheel+"個輪子,可載"+truck.carry+"人.");
System.out.println(taxi.name+"有"+taxi.wheel+"個輪子,可載"+taxi.carry+"人.");
}
}
class Car
{
String name;
int wheel;
int carry;
Car()
{
}
Car(String name)
{
this.name=name;
}
Car(int wheel, int carry)
{
this.wheel=wheel;
this.carry=carry;
}
Car(String name, int wheel, int carry)
{
this.name=name;
this.wheel=wheel;
this.carry=carry;
}
}
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作者:
林宇翔
時間:
2015-1-24 17:07
public class ch58
{
public static void main(String args[])
{
Car bus=new Car("公車",6,40);
Car truck=new Car(8,3);
truck.name="卡車";
Car taxi=new Car("計程車",4,5);
System.out.println(bus.name+"有"+bus.wheel+"個輪子,可載"+bus.carry+"人.");
System.out.println(truck.name+"有"+truck.wheel+"個輪子,可載"+truck.carry+"人.");
System.out.println(taxi.name+"有"+taxi.wheel+"個輪子,可載"+taxi.carry+"人.");
}
}
class Car
{
String name;
int wheel;
int carry;
Car()
{
}
Car(String name)
{
this.name=name;
}
Car(int wheel, int carry)
{
this.wheel=wheel;
this.carry=carry;
}
Car(String name, int wheel, int carry)
{
this.name=name;
this.wheel=wheel;
this.carry=carry;
}
}
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作者:
李允軒
時間:
2015-1-24 17:14
public class ch58
{
public static void main(String args[])
{
Car bus=new Car("公車",6,40);
Car truck=new Car(8,3);
truck.name="卡車";
Car taxi=new Car("計程車",4,5);
System.out.println(bus.name+"有"+bus.wheel+"個輪子,可載"+bus.carry+"人.");
System.out.println(truck.name+"有"+truck.wheel+"個輪子,可載"+truck.carry+"人.");
System.out.println(taxi.name+"有"+taxi.wheel+"個輪子,可載"+taxi.carry+"人.");
}
}
class Car
{
String name;
int wheel;
int carry;
Car()
{
}
Car(String name)
{
this.name=name;
}
Car(int wheel, int carry)
{
this.wheel=wheel;
this.carry=carry;
}
Car(String name, int wheel, int carry)
{
this.name=name;
this.wheel=wheel;
this.carry=carry;
}
}
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作者:
張彥承
時間:
2015-2-7 16:45
public class ch58
{
public static void main(String args[])
{
Car bus=new Car("公車",6,40);
//Car truck=new Car("卡車");
Car truck=new Car(8,3);
//Car truck=new Car();
truck.name="卡車";
Car taxi=new Car("計程車",4,5);
System.out.println(bus.name+"有"+bus.wheel+"個輪子,可載"+bus.carry+"人.");
System.out.println(truck.name+"有"+truck.wheel+"個輪子,可載"+truck.carry+"人.");
System.out.println(taxi.name+"有"+taxi.wheel+"個輪子,可載"+taxi.carry+"人.");
}
}
class Car
{
String name;
int wheel;
int carry;
Car()
{
}
Car(String name)
{
this.name=name;
}
Car(int wheel, int carry)
{
this.wheel=wheel;
this.carry=carry;
}
Car(String name, int wheel, int carry)
{
this.name=name;
this.wheel=wheel;
this.carry=carry;
}
}
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