Public class Person {

Public T age; 

Public Person (T age) {this. Age=age; } 
} 

 
Public class Student extends Person {

Public Student (Integer age) {super (age); } 
} 

 
Public class ReflectDemo {

Public static void main (String [] args) throws the Exception {
List Stu=fun (a Student in the class, "1, 2"); 
System. The out. Println (stu); 
} 

Public static & lt; T> List Fun (Class Clazz, String seriable) throws the Exception {
//try to create two student object through reflection 
List Stus=new ArrayList<> (a); 
String [] which=seriable. Split (", "); 

For (String age: which) {
//the following if you can not write an Integer. The class, but through the clazz reflection, but I can't get is the Object type 
T stu=clazz. GetDeclaredConstructor (Integer. The class). NewInstance (Integer. The valueOf (age)); 
Stus. Add (stu); 
} 

Return stus; 
} 
}