Class类的创建有哪些？

1.5、Class类的创建有哪些？

public class Test03 {
    public static void main(String[] args) throws ClassNotFoundException {
        Person person = new Student();
        System.out.println("这个人是：" + person.name);

        //1.通过对象获得
        Class c1 = person.getClass();
        System.out.println(c1.hashCode());

        //2.Class.forName
        Class c2 = Class.forName("com.xu.reflection.Student");
        System.out.println(c2.hashCode());

        //3.通过类名.class获得
        Class c3 = Student.class;
        System.out.println(c3.hashCode());

        //4.基本类型的包装类都有一个TYPE
        Class<Integer> c4 = Integer.TYPE;
        System.out.println(c4);

        //5.获得父类类型
        Class c5 = c1.getSuperclass();
        System.out.println(c5);
    }
}
class Person{
    public String name;

    public Person() {
    }

    public Person(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

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

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                '}';
    }
}

class Student extends Person{
    public Student() {
        this.name = "学生";
    }
}
class Teacher extends Person{
    public Teacher() {
        this.name = "老师";
    }
}

总结：

1. 通过对象获得
2. Class.forName
3. 通过类名.class获得
4. 基本类型的包装类都有一个TYPE
5. 获得父类类型