/* * To change this template, choose Tools | Templates * and open the template in the editor. */package client;/** * * @author Administrator */import java.awt.*;import javax.swing.*;import java.awt.event.*;import java.io.*;import java.net.*;public class ClientTestArea extends Panel implements ActionListener,Runnable{  Socket  socket=null;                                 DataInputStream in=null;                             DataOutputStream out=null;                           Thread threadMessage=null;                           TextArea 試題顯示區=null,答案顯示區=null;  Checkbox box[];                                     String answer="?";  long time=0;                                       Timer 計時器=null;                    Button  提交該題答案,讀取下一題,查看得分;  TextField 考試用時提示條=null;  public ClientTestArea()  {    threadMessage=new Thread(this);                    試題顯示區=new  TextArea("",16,5,TextArea.SCROLLBARS_BOTH);    答案顯示區=new  TextArea("",3,5,TextArea.SCROLLBARS_VERTICAL_ONLY);    答案顯示區.setFont(new Font("TimesRoman",Font.PLAIN,14));    試題顯示區.setFont(new Font("TimesRoman",Font.PLAIN,14));    試題顯示區.setForeground(Color.blue);         試題顯示區.setText(null);    答案顯示區.setForeground(new Color(255,100,100));         答案顯示區.setText("單擊查看得分按鈕,可以在這里看到得分和正確答案");     計時器=new Timer(1000,this);      String s[]={"A","B","C","D"};    box=new Checkbox[4];    for(int i=0;i<4;i++)      {        box[i]=new Checkbox(s[i]);      }    提交該題答案=new Button("提交該題答案");     讀取下一題=new Button("讀取下一題");    查看得分=new Button("查看得分");    考試用時提示條=new TextField("顯示考試用時(倒計時)",28);    考試用時提示條.setForeground(Color.red);    考試用時提示條.setEditable(false);    讀取下一題.setEnabled(true);    提交該題答案.setEnabled(false);    讀取下一題.setEnabled(false);    讀取下一題.addActionListener(this);    提交該題答案.addActionListener(this);    查看得分.addActionListener(this);       Panel pAddbox=new Panel();    for(int i=0;i<4;i++)      {        pAddbox.add(box[i]);      }    setLayout(new BorderLayout());    Panel pCenter=new Panel();    pCenter.setLayout(new BorderLayout());    pCenter.add(試題顯示區,BorderLayout.CENTER);    pCenter.add(答案顯示區,BorderLayout.NORTH);    add(pCenter,BorderLayout.CENTER);    Panel p1=new Panel();    p1.add(pAddbox);    p1.add(提交該題答案);    p1.add(讀取下一題);    p1.add(查看得分);    Panel p2=new Panel();    p2.add(考試用時提示條);    Panel  pSouth=new Panel();    pSouth.setLayout(new GridLayout(2,1));    pSouth.add(p1);    pSouth.add(p2);    add(pSouth,BorderLayout.SOUTH);     } public long getTime()    {      return time;    } public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)    {      this.socket=socket;      this.in=in;      this.out=out;      try{            threadMessage.start();         }      catch(Exception e)         {         }       if(this.socket!=null)       {         讀取下一題.setEnabled(true);         提交該題答案.setEnabled(false);         計時器.stop();         考試用時提示條.setText("顯示考試用時(倒計時)");       }     }public void set試題顯示區(String s)    {      試題顯示區.setText(s);    }public void actionPerformed(ActionEvent e)  {    if(e.getSource()==計時器)       {         time=time-1000;         if(time<=0)                                      {             計時器.stop();             讀取下一題.setEnabled(false);             提交該題答案.setEnabled(false);          }          long  leftTime=time/1000;                         long leftHour=leftTime/3600;                     long leftMinute=(leftTime-leftHour*3600)/60;          long leftSecond=leftTime%60;                     考試用時提示條.setText("剩余時間："+leftHour+"小時 "+leftMinute+"分 "+leftSecond+" 秒");        }    if(e.getSource()==讀取下一題)       {         讀取下一題.setLabel("讀取下一題");         提交該題答案.setEnabled(true);         讀取下一題.setEnabled(false);          try {                out.writeUTF("讀取下一題");              }          catch(Exception event)              {              }       }     if(e.getSource()==提交該題答案)       {          讀取下一題.setEnabled(true);          提交該題答案.setEnabled(false);          for(int i=0;i<4;i++)             {               if(box[i].getState()==true)                  {                    answer=box[i].getLabel();                    box[i].setState(false);                    break;                  }              }          try             {                        out.writeUTF("提交的答案:"+answer);             }          catch(IOException ee)             {             }       }   if(e.getSource()==查看得分)       {           try             {                   out.writeUTF("查看得分");             }           catch(IOException ee)             {             }       }    }public void run()                      {     while(true)        {           String s=null;            try               {                  s=in.readUTF();                                if(s.startsWith("試題內容:"))                     {                      String content=s.substring(s.indexOf(":")+1);                      試題顯示區.setText(s);                    }                 if(s.startsWith("分數"))                    {                      答案顯示區.setText("\n"+s);                     }                 if(s.startsWith("考試用時:"))                    {                      String str=s.substring(s.indexOf(":")+1);                      time=Long.parseLong(str);                      考試用時提示條.setText(""+time);                      計時器.start();                         }                  if(s.startsWith("考試結束:"))                    {                      計時器.stop();                         }                                   Thread.sleep(5);                }             catch(Exception e)               {                  試題顯示區.setText("和服務器的連接已中斷");               }        }  }}