for循环里new对象

今天遇到一个小bug

public class Demo extends Base{
    public static void main(String[] args) throws ClassNotFoundException {
//        InheritedExtend extend = Demo.class.getAnnotation(InheritedExtend.class);
//        System.out.println(extend.comment());
//        System.out.println(extend.order());
//        System.out.println(Demo.class.isAnnotationPresent(InheritedExtend.class));

//        Class clazz = Class.forName("annotationTest/person.java");


        List<Person> test = new ArrayList<>();

        Person person = new Person();

        person.name = "我试试";
        for (int i = 1;i<10;i++){
            test.add(person);
            person.name = person.name+i;
        }

        System.out.println(test.size());

        for (Person person1 : test) {
            System.out.println(person1.name+"    "+"hashcode:" +person1.hashCode());
        }

    }
}


for循环外面new 对象  for循环里面设置对象的值   然后把对象添加到list里面，实在太抽象了

结果是这样的



list里面存的是对象的地址，这样子搞list里面的东西全都是一个对象

本意是把对象new在for外面，节省点内存，结果整了个花活

string就可以这样子搞  还有一些包装类之类的可以这样子搞

public class Demo extends Base{
    public static void main(String[] args) throws ClassNotFoundException {
//        InheritedExtend extend = Demo.class.getAnnotation(InheritedExtend.class);
//        System.out.println(extend.comment());
//        System.out.println(extend.order());
//        System.out.println(Demo.class.isAnnotationPresent(InheritedExtend.class));

//        Class clazz = Class.forName("annotationTest/person.java");


        List<String> test = new ArrayList<>();

        String zifu = "我试试";

        for (int i = 1;i<10;i++){
            test.add(zifu);
            zifu = zifu+i;
        }

        System.out.println(test.size());

        for (String s : test) {
            System.out.println(s+"  "+"hashcode:"+s.hashCode());
        }

    }
}