為什么結果money是NULL啊 不是賦值了么
package project;
public class InitialCar {
public static void main(String[] args) {
// TODO Auto-generated method stub
Car car=new Car();
car.num="冀6666";
car.name="奔馳";
car.money=4000000;
car.drive();
}
}
?另一個代碼：
package project;
public class Car extends AutoMobile {
//double money=3000000;
?public void drive(){
System.out.println("奔馳代步");
?}
?public Car (){
?
?
System.out.println("name"+name+"money"+money+"Car類執行了");
?}
?public void qwe(){
System.out.println(super.money);
?
?}
}
2017-04-02
創建car對象時，執行car類的無參構造方法，此時name的值為空
2017-03-23
//double money=3000000;
把“//”注釋去掉