package hello; 
import javax.microedition.midlet.*; 
import javax.microedition.lcdui.*; 
import javax.microedition.io.*; 
import java.io.*; 

//CommandListener, 

public class HelloMIDlet extends MIDlet implements ItemStateListener{ 
   
private boolean midletPaused = false; 
  private Display display; 
  private Form form; 
  private Command exitCommand; 
  private Command okCommand; 
private Command a; 
private Command b; 
private Command c; 
private Command d; 
private StringItem stringItem; 
private ChoiceGroup group; 
private TextField textfield; 
private TextField infor; 
private TextField name; 
private TextField book; 
private TextField in; 

public Form getForm() {   
   Image[] imageArray=null; 
try { 
Image duke=Image.createImage("/Icon.png"); 
imageArray=new Image[]{ duke,duke,duke,duke}; 
}catch(java.io.IOException err){} 
if(form==null){   
    exitCommand = new Command("Exit", Command.EXIT, 1); 
okCommand=new Command("send",Command.ITEM,1); 
a=new Command("",Command.ITEM,1); 
b=new Command("",Command.ITEM,1); 
c=new Command("",Command.ITEM,1); 
d=new Command("",Command.ITEM,1); 
infor=new TextField("infor","text",18,TextField.ANY); 
form.append(infor); 
name=new TextField("name","text",18,TextField.ANY); 
form.append(name); 
book=new TextField("book","text",18,TextField.ANY); 
form.append(book); 
in=new TextField("in","text",18,TextField.ANY); 
form.append(in); 
textfield = new TextField("confirm item:","auto confirm",20,TextField.ANY); 

form = new Form("Welcome", new Item[] {getStringItem()}); 
String[] stringArray={"a","b","query","continue out book" }; 
group =new ChoiceGroup("select item press enter",ChoiceGroup.POPUP,stringArray,imageArray); 
form.append(group); 
form.append(textfield); 
form.addCommand(okCommand); 
   form.addCommand(exitCommand); 
   form.addCommand; 
   form.addCommand; 
   form.addCommand; 
   form.addCommand; 
   // form.setCommandListener(this); 
form.setItemStateListener(this); 
} 
return form; 
  } 
   
  public void startApp() { 
if (midletPaused) { 
resumeMIDlet (); 
} else { 
initialize (); 
startMIDlet (); 
} 
midletPaused = false; 
  } 

  public void pauseApp() { 
  } 

  public void destroyApp(boolean unconditional) { 

  } 
   
   
     public void callServlet() throws IOException { 
    HttpConnection http = null; 
    InputStream iStrm = null; 
String infor1=infor.getString().trim(); 
String book2=book.getString().trim(); 
String name3=name.getString().trim(); 
String in4=in.getString().trim(); 

     
    String url = "http://127.0.0.1/cellphone/servlet/SearchReaderInfo2" + "?" + "infor1=" 
        + infor1+"book2=" 
        +book2+"name3=" 
        +name3+"in4=" 
        +in4; 

    try { 
      http = (HttpConnection) Connector.open(url);   
      http.setRequestMethod(HttpConnection.GET); 
      if (http.getResponseCode() == HttpConnection.HTTP_OK) { 
        iStrm = http.openInputStream();         
        int length = (int) http.getLength(); 
        if (length > 0) { 
          byte servletData[] = new byte[length]; 
          iStrm.read(servletData);           
          form.append("confirm ok : \n" 
              + new String(servletData)); 
        } else 
          form.append("no data"); 
      } 
    } catch (Exception e) { 
      form.append("network error"); 
      System.out.println(e.toString()); 
    } finally { 
       
      if (iStrm != null) 
        iStrm.close(); 
      if (http != null) 
        http.close(); 
    } 
  } 
   
  public void updateServlet() throws IOException { 

    HttpConnection http = null; 
    InputStream iStrm = null; 
String infor1=infor.getString().trim(); 
String book2=book.getString().trim(); 
String name3=name.getString().trim(); 
String in4=in.getString().trim(); 
     
    String url = "http://127.0.0.1/cellphone/servlet/SearchReaderInfo2" + "?" + "infor1=" 
        + infor1+"book2=" 
        +book2+"name3=" 
        +name3+"in4=" 
        +in4; 

    try { 
      http = (HttpConnection) Connector.open(url);   
      http.setRequestMethod(HttpConnection.GET); 
      if (http.getResponseCode() == HttpConnection.HTTP_OK) { 
        iStrm = http.openInputStream();         
        int length = (int) http.getLength(); 
        if (length > 0) { 
          byte servletData[] = new byte[length]; 
          iStrm.read(servletData);           
          form.append("confirm ok : \n" 
              + new String(servletData)); 
        } else 
          form.append("no data"); 
      } 
    } catch (Exception e) { 
      form.append("network error"); 
      System.out.println(e.toString()); 
    } finally { 
       
      if (iStrm != null) 
        iStrm.close(); 
      if (http != null) 
        http.close(); 
    } 
  } 

  public void commandAction(Command a,Command b,Command c, Displayable s) { 
if (form==s){ 
    if (a == exitCommand) { 
     exitMIDlet();    
    } 
if (a == okCommand ) { 
   System.out.println("123"); 
} 
if (b == okCommand ) { 
   System.out.println("123"); 
} 
if (c == okCommand ) { 
   System.out.println("123"); 
} 

try{ 
   System.out.println("error"); 
   } 
   catch(Exception e ){ 
     System.out.println("231"); 
   } 
   } 
   } 
   
   
   
   
       
       
       
       
public StringItem getStringItem() { 
if (stringItem == null) { 
// write pre-init user code here 
stringItem = new StringItem("ksu libary", "please login:"); 
// write post-init user code here 
} 
return stringItem; 
} 

public void resumeMIDlet() { 
} 
private void initialize() { 
} 
public void startMIDlet() { 
// write pre-action user code here 
switchDisplayable(null, getForm()); 
// write post-action user code here 
//   try { 
  //    callServlet(); 
  //  } catch (Exception e) { 
  //    System.out.println(e.toString()); 
  //  } 
} 
public void switchDisplayable(Alert alert, Displayable nextDisplayable) { 

Display display = getDisplay(); 
if (alert == null) { 
display.setCurrent(nextDisplayable); 
} else { 
display.setCurrent(alert, nextDisplayable); 
} 

} 
public Display getDisplay () { 
return Display.getDisplay(this); 
} 
public void exitMIDlet() { 
switchDisplayable (null, null); 
destroyApp(true); 
notifyDestroyed(); 
} 
public void itemStateChanged(Item item) { 
    if( item instanceof ChoiceGroup) 
{ 
      textfield.setString( group.getString(group.getSelectedIndex())); 
} 
     
  } 
}