Java如何根据类名和方法名创建类的实例，并调用对应方法？

package interview;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Reflect {
public static void main(String []args) throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, ClassNotFoundException, InstantiationException{

Class c = Class.forName("interview.Singleton"); //包名为interview
Method m = c.getMethod("print"); //Sigleton有一个方法为print
m.invoke(c.newInstance()); //调用print方法
}
}

package interview;

public class Singleton {
private static Singleton inst = null;

public static Singleton getInstance(){
if(inst == null){
inst = new Singleton();
}
return inst;
}

public void print(){
System.out.println("i am singleton");
}
}