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]