Java运行时动态加载类之Class.forName

需求场景：通过Class.forName加载类并创建实例。

1、接口类：

package cn.fjs;

public interface IC {
public void action();
}


2、实例类：
package cn.fjs;

public class C implements IC{
public void action(){
System.out.println("Hi i am A class.");
}
}


3、测试类：
package cn.fjs;

import java.util.Scanner;

public class demo {
public static void main(String[] args){
System.out.print("\nPls enter the class name:like cn.fjs.C \n");
Scanner sc = new Scanner(System.in);
String cname = sc.next();
try{
Class aClass = Class.forName(cname);
IC ic = (IC)aClass.newInstance();
ic.action();
}catch (Exception e){
e.printStackTrace();
}
}
}