package generics;

import java.util.*;

/**

* RUN:

* javac generics/InstantiateGenericType.java && java generics.InstantiateGenericType

* OUTPUT:

* ClassAsFactory<Employee> success!

* ClassAsFactory<Integer> failure!

*/

// COMPILETIME ERROR !!!

public class InstantiateGenericType {

public static void main(String[] args) {

ClassAsFactory<Employee> fe = new ClassAsFactory<Employee>(Employee.class);

System.out.println("ClassAsFactory<Employee> success!");

try {

//

// Fire exception here cause Integer class have not constructor w/o args !

//

ClassAsFactory<Integer> fi = new ClassAsFactory<Integer>(Integer.class);

}

catch(Exception e) {

System.out.println("ClassAsFactory<Integer> failure!");

}

}

}

class ClassAsFactory<T> {

T x;

public ClassAsFactory(Class<T> kind) {

try {

x = kind.newInstance();

}

catch(Exception e) {

throw new RuntimeException(e);

}

}

}

class Employee {}