Java值传递和引用传递

package oop;

public class Demo04 {

    public static void main(String[] args) {
        int a=1;
        System.out.println(a);    //1

        Demo04.change(a);
        System.out.println(a);    //1
    }

    public static void change(int a){
        a=10;
    }
}

package oop;

public class Demo05 {
    public static void main(String[] args) {
        Person person = new Person();
        System.out.println(person.name);    //null

        Demo05.change((person));
        System.out.println(person.name);    //clin

    }
    public static void change(Person person){
        person.name="clin";

    }
}

class Person{
    String name;

}