我是使用eclipse寫的代碼主程序：public class Test { public static void main(String[] args) { try { //動態加載類，在運行時加載 Class<?> c = Class.forName(args[0]); //通過類類型，創建該類對象 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!"); }}