Huzefa Zohaib

Can Entity Class be mixed with Control Class ?

I have a ClassA which is changing the flow of control/event, Hence I identified it as Control Class, but, it this ClassA is identified as Entity Class also because information about it has to be maintained.

For Example:

In my scenario, "Sale Person do negotiation on price with customer, and if negotiation is successful item will be sold to customer and Sale Person will take its commission and if negotiation fails order will be canceled"

Now according to my understanding "Sale Person" is a Control Class and also a Entity Class.


Please correct my concept.

Thank You.

By observing the class hierarchy in API, you can get the information that class is of what type !!!

http://java.sun.com/j2se/1.4.2/docs/api/java/lang/NumberFormatException.html


However NumberFormatException in not subclass of FileNotFoundException !!!

java.lang.Object
java.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
java.lang.IllegalArgumentException
java.lang.NumberFormatException
[ March 12, 2008: Message edited by: Huzefa Zohaib ]

I signed my MIDlet App using the following steps !

I am just copying the commands,
keytool -genkey -alias Huzefa -keyalg RSA -validity 365 -keystore silentmmobile.sks

keytool -export -alias Huzefa -keystore silentmmobile.sks -file silentmmobile.crt

jarsigner -keystore silentmmobile.sks -storepass netpace SilentMMobile.jar Huzefa

java -jar D:\tools\wkt23\bin\JadTool.jar -addcert -alias Huzefa -storepass netpace -keystore silentmmobile.sks -inputjad SilentMMobile.jad -outputjad SilentMMobile.jad

java -jar D:\tools\wkt23\bin\JadTool.jar -addjarsig -alias Huzefa -jarfile D:\Huzefa\J2MEPractise\SilentMMobile\dist\SilentMMobile.jar -keystore silentmmobile.sks -storepass netpace -keypass netpace -inputjad SilentMMobile.jad -outputjad SilentMMobile.jad



After performing all the above process, I copied the SilentMMobile.jar, SilentMMobile.jad, and silentmmobile.crt in the Mobile Sony Ericcson P990i and also on N95.

Then add the cretificate by clicking on the silentmmobile.crt
Then click on the SilentMMobile.jar

Installation started and at the end of the installation,
Error Appeared: That is,
"
Security Information
Component failed security check
Cannot install.
"

Authentication Failed.


Please any one can tell me the reason
I will be thank full....

I run the program and it ran fine,

What the error are you facing, analyze the stack or post it.

Hello!

hsqldb_1_8_0_1
I have created table using runManager.bat via
"create cached table"
and tables are created successfully.

Now when I try to access the database via JDBC using the following code
Class.forName("org.hsqldb.jdbcDriver");
String url = "jdbc:hsqldb:mydb/mydb";
con= DriverManager.getConnection(url, usrName, pas);
System.out.println ("Connection is created successfully");

and try to insert the data it throwing an exception
java.sql.SQLException: Table not found in statement [SELECT * FROM Users]

After then i tried to recreate the using JDBC, even in that case tables being created successfully, but the error is there.

How to display a image in a JFrame
Please give me a simple code as an example.
Thank You

What is the meaning of this exception and why is it occurring
"org.apache.jasper.compiler.ParseException: C:\Back\tomcat3\webapps\ROOT\jsp\huzefa\Mb\MessageArchieve.jsp(2,16) Attribute import has no value"

ClassCastException is occuring during execution of the following code.
Please solve this RunTimeError.
FileInputStream fis= new FileInputStream ("C://abc.txt"); ObjectInputStream p = new ObjectInputStream (fis); User tempUser= (User)p.readObject ();
I am writing the object to the text file using the following code.
FileOutputStream ostream = new FileOutputStream ("C://abc.txt"); ObjectOutputStream p = new ObjectOutputStream (ostream); p.writeObject ("new User (" +name +", " +pass +")"); p.flush (); p.close (); ostream.close ();

" java.sql.SQLException: General error " is occuring on the following code.
Please explain why and does it mean.
I am using Microsoft Access 97
I am creating the table using the following method.
// I am creating the table using the following method. public void createTable () { Connection fConn= ConnForCont1.getInstance ().getConnection (); Statement stat= null; String SQL= null; SQL= "CREATE TABLE " +"NP" +" (Name CHAR(25), Password CHAR(25), Messages VARBINARY)"; try { stat= fConn.createStatement (); stat.execute (SQL); }catch (SQLException ee){ System.out.println (ee); } catch (Exception ee){ System.out.println (ee); } } // createTable ()
Exception is occuring in the following code.
// Exception is occuring in the following code. String name= "Huzefa"; String pass= "huzefa" User idUser= null; if (name != null) { if (pass != null) { try { // I want to write the object also in the database ByteArrayOutputStream bos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(bos); oos.writeObject("new User(" +name +"," +pass +")"); oos.flush(); oos.close(); byte[] ser= bos.toByteArray (); //----------------------------------------------------------------------------------------------------------------------- // Exception is occuring on following line PreparedStatement pstmt= fConn.prepareStatement ("INSERT INTO NP (Name, Password, Messages) VALUES (?,?,?)"); //----------------------------------------------------------------------------------------------------------------------- pstmt.setString (1, name); pstmt.setString (2, pass); pstmt.setBytes (3, ser); pstmt.executeUpdate ();

There is a text contaning the following data named "abc.txt".
a b c d e f g h i
j k l m n o p q r
s t u v w x y z
Now I want to change the "n" to "N" in the text file abc.text
I find the position of "n" using the following code.
try {
FileReader readIt = new FileReader("C://abc.txt");
BufferedReader collectData = null;
collectData = new BufferedReader (readIt);
String line= null;
while ((line= collectData.readLine ()) != null) {
if (line.indexOf ('n') > 0) {
/*
Over Here I want to write the code which can change
the letter "n" to letter "N"
*/
} // if
} // while
}catch (Exception ee) {System.out.println (ee);}

" java.sql.SQLException: General error " is occuring on the following code.
Please explain why and does it mean.

String name= req.getParameter ("name"); String pass= req.getParameter ("password"); User idUser= null; if (name != null) { if (pass != null) { try { // I want to write the object also in the database ByteArrayOutputStream bos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(bos); oos.writeObject("new User(" +name +"," +pass +")"); oos.flush(); oos.close(); byte[] ser= bos.toByteArray (); PreparedStatement pstmt= fConn.prepareStatement ("INSERT INTO NP (Name, Password, Messages) VALUES (?,?,?)"); // Exception is occuring on this line pstmt.setString (1, name); pstmt.setString (2, pass); pstmt.setBytes (3, ser); pstmt.execute ();

Please give me the code
which can call the image from the hard disk and transform the size and write it to the hard disk.

The following Exception
java.sql.SQLException: [Microsoft][ODBC Driver Manager] Function sequence error
is occuring on the following code.
What does this error means and why is occuring.
//package huzefa.Mb; import java.io.*; import java.sql.*; import java.util.*; public class FunctionSE { private static Hashtable idPass= new Hashtable (); public static void main (String[]args) { // createTable (); // insertIt ("abcde", "xyz"); Connection fConn= createConnection (); ResultSet rsAll= null; Statement stat= null; String All= "SELECT * FROM NP"; try { stat= fConn.createStatement (); rsAll= stat.executeQuery (All); stat.close (); } catch (SQLException s) { System.out.println ("ERROR: Could not update database"); System.out.print (s); } // catch () try { int i= 0; System.out.println ("in try "); while (rsAll.next ()) { idPass.put (rsAll.getString ("Name").trim (), rsAll.getString ("Password").trim ()); // function sequence error is occuring on this line } // while }catch (java.sql.SQLException e) { System.out.println ("java.sql.SQLException: " +e);} catch (Exception e) { System.out.println ("Exception: " +e); } } // main public static Connection createConnection () { Connection conn= null; try { // load JDBC-ODBC Bridge driver Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver"); // establish database connection to database using ODBC conn= DriverManager.getConnection ("jdbc :-o dbc:MB"); }catch (ClassNotFoundException ee) { System.out.println ("JDBC-ODBC bridge not found"); }catch (SQLException ee) { System.out.println ("SQL exception thrown in Connection"); } // catch () System.out.println ("Connection is created in connection"); return conn; } // createConnection () public static void createTable () { Connection fConn= createConnection (); Statement stat= null; String SQL= null; String url= null; SQL= "CREATE TABLE " +"NP" +" (Name CHAR(25), Password CHAR(25), Messages VARBINARY)"; try { stat= fConn.createStatement (); stat.execute (SQL); }catch (SQLException ee){ System.out.println (ee); } catch (Exception ee){ System.out.println (ee); } } // createTable public static void insertIt (String name, String pass) { Connection conn= createConnection (); String ah= new String ("Ahsan"); try { // I want to write the object also in the database ByteArrayOutputStream bos = new ByteArrayOutputStream (); ObjectOutputStream oos = new ObjectOutputStream (bos); oos.writeObject("new String(" +name +")"); oos.flush(); oos.close(); byte[] ser= bos.toByteArray (); System.out.println (name +" + " +pass); PreparedStatement pstmt= conn.prepareStatement ("INSERT INTO NP (Name, Password, Messages) VALUES (?,?,?)");//create a new one pstmt.setString (1, name); pstmt.setString (2, pass); pstmt.setBytes (3, ser); pstmt.execute (); System.out.println ("OK! Data is inserted"); }catch (SQLException ee) {System.out.println ("Data is not inserted, " +name +" due to " +ee);} catch (Exception ee) {System.out.println ("Data is not inserted, " +name +" due to " +ee);} } // insertIt } // Class FunctionSE

the following code is not giving the list of names in the form.
I am fad up by finding the problem
Please Click On the following link to have look on problem
http://www.geocities.com/huzefapk2000/Problem.htm
I was trying copy the code in field but it was giving the error so I uploaded on web.

the following java script should give the list of names in the form but is not doing so
<script language="JavaScript"> function sIt(e) { var ml = document.form1; var len = ml.elements.length; for (var i=0; i<len; i++) { var ee=ml.elements[i]; document.writeln (ee.name); }//for } </script>
the page is on Testing java script