class Car{
String band;
float price;
public Car(String a,float b){
band = a;
price = b;
System.out.println("car的构造函数被调用");
}
public Car(String a){
this(a,10000);
}
public Car(){
this("本田",500000);
} public void print(){
System.out.println("本车是"+ band+",价钱:"+price);
}
}
public class ConstrctionDemo{
public static void main(String arg[]){
Person 张三= new Person();
Car 吉普车 = new Car("北京吉普",65555.5f);
Car abc = new Car();
abc.print();
Car def = new Car("法比亚");
def.print();
吉普车.print();
}
}
请问结果为什么有三次输出"car的构造函数被调用"
当中是如何实现的,谢谢!!!
String band;
float price;
public Car(String a,float b){
band = a;
price = b;
System.out.println("car的构造函数被调用");
}
public Car(String a){
this(a,10000);
}
public Car(){
this("本田",500000);
} public void print(){
System.out.println("本车是"+ band+",价钱:"+price);
}
}
public class ConstrctionDemo{
public static void main(String arg[]){
Person 张三= new Person();
Car 吉普车 = new Car("北京吉普",65555.5f);
Car abc = new Car();
abc.print();
Car def = new Car("法比亚");
def.print();
吉普车.print();
}
}
请问结果为什么有三次输出"car的构造函数被调用"
当中是如何实现的,谢谢!!!
this(a,10000);
}
public Car(){
this("本田",500000);
}它们的时候执行了this(...,...)就是 public Car(String a,float b)构造函数。