java反射属性访问权限

class Teacher {
    private int height;
    String name;
    protected int age;
    public String sex;
}

public class InvokeTest {
    public static void main(String[] args) {
        Teacher teacher = new Teacher();
        Field[] fields = Teacher.class.getFields();
        try {
            Field name = Teacher.class.getDeclaredField("name");
            Field height = Teacher.class.getDeclaredField("height");
            Field age = Teacher.class.getDeclaredField("age");
            Field sex = Teacher.class.getDeclaredField("sex");

            try {
                height.setAccessible(true);
                height.set(teacher, 180);
                name.set(teacher, "tom");
                age.set(teacher, 11);
                sex.set(teacher, "男");
                System.out.println("11111");
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        }
    }

}