Java学习的第五十一天

1.例9.3

析构函数

public class Cjava {
public static void main(String[]args) {
Student s1=new Student(10010,"qi xi",'f');
s1.display();
Student s2=new Student(10011,"mi xi",'m');
s2.display();
s1.finalize();
s2.finalize();
}
}
class Student{
    int num;char sex;String name;
    Student(int n,String na,char s){
        num=n;name=na;sex=s;
        System.out.println("Constructor called");
    }
    protected void finalize() {
        System.out.println("Dextructor called");
    }
    void display() {
        System.out.println("num"+num+"name:"+name+"sex:"+sex);
    }
}

 

 2.没问题

3.明天继续写例题