英文:
Can a java class object be a state variable in another class?
问题
让我们假设我在Java中有一个Car类，然后我创建另一个名为ElectricCar的类。在我的ElectricCar类中，可以将Car对象作为状态变量吗？
英文:
Let's say I have a Car class in Java and then I make another class called ElectricCar. Can a Car object be a state variable in my ElectricCar class?
答案1
得分: 2
简而言之：是的。试试看：
class Car {
}
class ElectricCar {
Car myCar = new Car();
}
英文:
Simply put: yes. Try it:
class Car {
}
class ElectricCar {
Car myCar = new Car();
}
答案2
得分: 1
是的，这很常见：
class Car {
}
class ElectricCar {
private final Car car;
ElectricCar(Car car) {
this.car = car;
}
}
英文:
Yes; and it's quite common:
class Car {
}
class ElectricCar {
private final Car car;
ElectricCar(Car car) {
this.car = car;
}
}
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