Java

CodeScribbler wrote:

Am I using the substring method incorrectly?

DOB.substring(3,5) == "01"

String s1 = new String("01");
String s2 = new String("01");
if (s1 == s2) // returns false
if (s1.equals(s2)) // returns true

Member 2119945 wrote:

Why does the calendar object need a seed value...???

Member 2119945 wrote:

What do you mean to "check the value returned from System.currentTimeMillis()"...???

ca.setTime(new Date(System.currentTimeMillis()));

private String getTimestamp() {
    try {
        // get the calendar instance for current time    
        Calendar ca = Calendar.getInstance();
        SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
        String stime = df.format(ca.getTime());
        System.out.printf("%s\n", stime);   // DEBUG
    } catch (Exception e) {
        // nothing
    }
    return stime;
}

David Skelly wrote:

Is SimpleDateFormat supported in J2ME?

David Skelly wrote:

So much for WORA

URL myurl = Thread.currentThread().getContextClassLoader().getResource("Images/Logo.jpg");
ImageIcon im = new ImageIcon(myurl);

pohcb_sonic wrote:

How do I verify the data?

pohcb_sonic wrote:

I've tried to output the sent data in String format in Java.
This is what I get:

public void Display_Msg(int SIZE){
       String S;
          int DisplayLen = 0;


          if (SIZE > txtSpd.getColumns()-1){

              for(int i = 0; i< txtSpd.getColumns(); i++){
                    //Convert converted arrayMsg to Hex in string (16 hexa), since Java's is 32Bits in byte
                   S = Integer.toString(ByteConversion(byteTxtMsg[i]), 16) + " ";
                   txtSpd.append(S);
               }
               txtSpd.append("\n");


               for(int j = txtSpd.getColumns()-1; j< SIZE; j++){
                //Convert converted arrayMsg to Hex in string (16 hexa), since Java's is 32Bits in byte

                   S = Integer.toString(ByteConversion(byteTxtMsg[j]), 16) + " ";
                   txtSpd.append(S);
                  DisplayLen = txtSpd.getLineCount();
                 }
                  txtSpd.append("\n");



               }




          if (SIZE <= txtSpd.getColumns()-1){


                   for(int i = 0; i< SIZE; i++){
                    //Convert converted int arrayMsg to Hex in string (16 hexa), since Java's is 32Bits in byte
                   S = Integer.toString(ByteConversion(byteTxtMsg[i]), 16) + " ";

                   txtSpd.append(S);
                   DisplayLen = txtSpd.getLineCount();
                }
                  txtSpd.append("\n");

           }




           if (DisplayLen > 18){
               txtSpd.setText("");
           }


            String dat1="";
             byte Msg[] = new byte[50];

           for (int k = 0; k<SIZE; k++){
             dat1 = Integer.toString(ByteConversion(byteTxtMsg[k]), 16) + " ";


           }

          Msg = dat1.getBytes();

          try{
            udpC.send(Msg);
          }

          catch (IOException w){
            System.out.println("Error: " + w);

           }

   }

public void send(byte[] data) throws IOException {

    if (data.length > 8192) throw new IOException("Too much data");
    
    DatagramPacket dp = new DatagramPacket(data, data.length, remote, port);
   
    ds.send(dp);
    

  }

pohcb_sonic wrote:

Could it be that sending portion of the messages in bytes in Java has something to do with this, as it is known that the bytes in Java has some restrictions?

/* handled in paintComponent() */

Draws as much of the specified image as has already been scaled to fit inside the
specified rectangle.

Draws as much of the specified area of the specified image as is currently available,
scaling it on the fly to fit inside the specified area of the destination drawable 
surface.