Java 设计模式之 命令模式（Command Pattern） 代码实现

     <pre class="brush:java; toolbar: true; auto-links: false;">public interface Command {  public void execute(); }</pre>    <pre class="brush:java; toolbar: true; auto-links: false;">public class Student implements Command {   @Override  public void execute() {   System.out.println("学生执行。。。。");  }  }</pre>    <pre class="brush:java; toolbar: true; auto-links: false;">public class Teacher implements Command{   @Override  public void execute() {   System.out.println("老师执行");  }  }</pre>    <pre class="brush:java; toolbar: true; auto-links: false;">public class Test {  public static void main(String[] args) {   List<Command> list=new ArrayList<Command>();   list.add(new Student());   list.add(new Teacher());   for (Command commond : list) {    commond.execute();   }  } }</pre>    <br />