扩展可序列化的类行为

Question

I have a class Foo which implements Serializable and I wanted to serialize name . Now I want to serialize mobile number . Does my extended class Moo need to implement Serializable ? Does my extended class Moo need its own serialVersionUID ?

Class Foo implements Serializable{
private static final long serialVersionUID = -5073774854914426595L;

    String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return ClassUtils.toString(this);
    }

}

I am extending this class

Class Moo extends Foo{
  String mobileNumber;

 public String getMobileNumber() {
        return mobileNumber;
    }

    public void setMobileNumber(String mobileNumber) {
        this.mobileNumber = mobileNumber;
    }

    @Override
    public String toString() {
        return ClassUtils.toString(this);
    }
}

Answer 1

1. Moo class doesn't need to implement Serializable
2. Yes, it has to have it own serialVersionUID