Reflection + annotation + generics

public static void main(String[] args) {
    // Reflection  Class  Bytecode   establish Class object 
    //Class Three ways to create objects  1. Class name .class 2. Object name .getClass() 3.Class.forName(" Fully qualified class name ")
    //1. establish Class object 
    Class clz=Teacher.class;
    //2. Get the public properties in the class 
    Field[] fields1=clz.getFields();// Get the properties of the public access modifier in the class , Include inheritance 
    for(Field f:fields1){
        System.out.println(f.getName());
    }
    System.out.println("---------");
    //3. Get all the properties in the class , Does not contain inherited 
    Field[] fields2=clz.getDeclaredFields();// Get all the properties in the class , Does not contain in the parent class 
    for(Field f:fields2){
        System.out.println(f.getName());
    }
    System.out.println("---------");
    //4. Get public methods 
    Method[] methods1=clz.getMethods();// Methods to get public access modifiers in classes , Include inheritance 
    for(Method m:methods1){
        System.out.println(m.getName());
    }
    System.out.println("**********");
    //5. Get all methods , Without the parent class 
    Method[] methods2=clz.getDeclaredMethods();// Get all the methods in the class , Does not contain in the parent class 
    for(Method m:methods2){
        System.out.println(m.getName());
    }
    }

public static void main(String[] args) throws InstantiationException, IllegalAccessException, NoSuchFieldException {

        String str="name= Bei Bei &sex= Woman &info= narcissism ！";

        // Please convert the string to Teacher object 

        //1. Parse string 

        //2. objects creating   Attribute assignment 

        // establish Class object  - Reflection 

        Class clz=Teacher.class;

        // Create object of class 

        Teacher teacher= (Teacher) clz.newInstance();

        // String common methods   Parse string   cutting &  Array of strings 

        String[] strs1=str.split("&");

​

        System.out.println(Arrays.toString(strs1));

        // Loop traversal   Key value pair 

        for(String s1:strs1){

            // cutting =

            String[] strs2=s1.split("=");

            System.out.println(Arrays.toString(strs2));

            // Reflection   Get the specified attribute object 

            Field field=clz.getDeclaredField(strs2[0]);

            if(field!=null){

                // Set ignore access modifier 

                field.setAccessible(true);

                // assignment 

                field.set(teacher,strs2[1]);

            }

        }

        System.out.println(teacher);

    }