为何我不能实现动态加载类

Question

我是使用eclipse写的代码主程序：public class Test { public static void main(String[] args) { try { //动态加载类，在运行时加载 Class<?> c = Class.forName(args[0]); //通过类类型，创建该类对象 Office test = (Office) c.newInstance(); test.print(); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } }}package myclass;public interface Office { public void print();}package myclass;public class Word implements Office { @Override public void print() { System.out.println("Word Test!"); }}package myclass;public class Excel implements Office { @Override public void print() { System.out.println("Excel Test!"); }}

Answer 1

 public static void main(String[] args){

}

要传入参数给 args[0]