startcommand.java

利用JAVA开发的简单考试系统

package controller.command;
import model.persistency.*;
import java.util.*;
import controller.state.*;
import controller.exception.*;
import viewer.UserFrame;
import javax.swing.JOptionPane;
/**
 *
 * <p>Title: </p>
 * 开始命令
 * <p>Description: </p>
 * 通过此类调用中介类，显示相应题目的框架
 */
public class StartCommand{
   PersistentItem item;
   ArrayList test;
   public StartCommand(ArrayList t){
	   test = new ArrayList();
	   test = t;
   }
   public void excute(){
         // JOptionPane.showMessageDialog(null,"start");
        //  JOptionPane.showMessageDialog(null,test.toString());
	  if(test != null){
          //得到试卷的第一个题目
          item = (PersistentItem)test.get(0);
	  Mediator m = new Mediator();
	  m.reponse(item).setVisible(true);//显示不同题目页面
	  }
	  else {
              new NullItemException("no item, please select the open patten.");
              UserFrame uframe = new UserFrame();
              uframe.setVisible(true);
             // uframe.test = new ArrayList();
              }
   }
}