which of the following methods eliminates the need to call wasNull() method to handle null database fields?a)getObject()b)getInt()c)getString()d)getFloat()e)getNull()

vinaymudgil007

 Profile Answers by vinaymudgil007 Questions by vinaymudgil007

• Jun 8th, 2010

To my understanding, the question  isn't framed properly. The answers given by two fellows above are ways to go around this situation but none eliminates the need to call wasNull().Other views are appreciated !!!

kittupeddi

 Profile Answers by kittupeddi Questions by kittupeddi

• Apr 10th, 2008

Two Ways:1> Use the wasNull() method on the ResultSet.2> Use the getObject() method on the ResultSet and do the Comparision.

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A user leaves an online shopping cart without checking out.Which of the following interfaces will notify to rollback the transaction?a)HttpSessionb)HttpSessionBindingListenerc)HttpServletd)SingleThreadModele)FtpSession

vinaymudgil007

 Profile Answers by vinaymudgil007 Questions by vinaymudgil007

• Jun 8th, 2010

(b)HttpSessionBindingListener is the correct answervalueBound() and valueUnbound() are the methods that should be over-ridden to get this implemented.Thanks.Vinay

phanikhk

 Profile Answers by phanikhk Questions by phanikhk

• Apr 9th, 2008

Any class can implement HttpSessionBindingListener interface. This interface includes two methods, valueBound() and valueUnbound(), that are called whenever the object that implements the interfa...

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What is the purpose of creating ODBC data source in establishing a connection between Java application & database?

sindhumsc

 Profile Answers by sindhumsc Questions by sindhumsc

• Aug 24th, 2010

ODBC stands for open database connectivity which helps us to connect then link from Java to database..so if we want to connect from Java to any database one way is to use ODBC which helps to connect Java to any database (like Oracle, MySQL..).

vana_mlk

 Profile Answers by vana_mlk Questions by vana_mlk

• Jul 2nd, 2010

Shine pattern has JConnection for connecting to any database.

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Answered by Jey on 2005-05-10 06:01:10: Here are the steps.  Using DriverManager: 1. Load the driver class using class.forName(driverclass) and class.forName() loads the driver class and passes the control to DriverManager class 2.DriverManager.getConnection() creates the connection to the databse  Using DataSource. DataSource is used instead of DriverManager in Distributed...

safiya

• Oct 18th, 2005

First we register the connection and after that we connect the database, in that we give to which database is connecting giving that  ipaddress ,port number,username and password .

sudhakar

• Oct 15th, 2005

it has two steps:1.load the class by using class.forName2.register the driver by using DriverManager class

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tgnanakumar

 Profile Answers by tgnanakumar Questions by tgnanakumar

• Apr 23rd, 2010

By using the J2EE servers like WebLogic, WebSphere, jBoss, Tomcat.  We have to configure the data source object and connection pool object and supply the values as part of connection pool configu...

G.kirankumar

• Oct 6th, 2005

code for connecting the connection poolingInitalContext ic=new InitialContext();Hashtable ht=new Hashtable();ht.put("Context.INITIAL_PROVIDER",weblogic.jndi.InitialCla) //u have to set weblogic proper...

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A Statement object is what sends your SQL statement to the DBMS. You simply create a Statement object and then execute it, supplying the appropriate execute method with the SQL statement you want to send. For a SELECT statement, the method to use is executeQuery. For statements that create or modify tables, the method to use is executeUpdate. E.g. It takes an instance of an active connection to create...

trinadh gantla

• May 3rd, 2007

Using Statement interface we can create JDBC statements as follows  Statement stmt=con.createStatement();here con is the connection object reference Different types of statements are Prepa...

rameshvdnv

 Profile Answers by rameshvdnv Questions by rameshvdnv

• Apr 25th, 2007

Class.forName("oracle.jdbc.driver.OracleDriver");Connection con;con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","scott","tiger");Statement stmt=con.createStatement();

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Naim Kazi

• Feb 14th, 2006

But guys prepared statement has one disadvantage that it holds the data in the database. So when you execute a prepared statement for the first time, it will save the data in the database so that for ...

Anurjay Pradhan

• Nov 22nd, 2005

Prepared Statement is Pre-compiled class , but Statement is not.So in PreparedStatement the execution will be faster.

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pavani

• Nov 14th, 2005

A single application can have one or more connections with a single database, or it can have connections with many different databases.A user can get information about a Connection object's datab...

Mamatha

• Oct 23rd, 2005

Meta Data- is information that describes about structure and properties of our data. When we define a table we specify each columns name, type of data it holds and restrictions imposed (Constraints) ...

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A) Type - 1B) Type - 2C) Type - 3D) Type – 4

Hema chandra Reddy

• May 15th, 2006

Hi Type -4  is the best use

ak40732

 Profile Answers by ak40732 Questions by ak40732

• Mar 21st, 2006

As we know that applets has many restrictions on the remote machine on which they are executed.But they can make connections to the server from which they have been originated.As the database obviousl...

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vinaymudgil007

 Profile Answers by vinaymudgil007 Questions by vinaymudgil007

• Jun 8th, 2010

These are used to store large amount of data into database like images, movie etc which are extremly large in size.Thanks,Vinay

madhuhari

 Profile Answers by madhuhari Questions by madhuhari

• Apr 16th, 2007

BLOB(Binary Large Object) and CLOB(CharacterLargeObject) are SQL2 datatypes, which are introduced in JDBC 2.0 version. Suppose you have a requirement like, you want to store your content of resume(la...

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vinaymudgil007

 Profile Answers by vinaymudgil007 Questions by vinaymudgil007

• Jun 8th, 2010

The connection object is still open after the excecution unless explicitly closed by Connection.close() method.

venu

• Apr 10th, 2007

The connection object is still active, meaning it is ready to execute another statement.

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kecai

 Profile Answers by kecai Questions by kecai

• Oct 26th, 2005

AND, The DriverManager attempts to select an appropriate driver from the set of registered JDBC drivers

kecai

 Profile Answers by kecai Questions by kecai

• Oct 26th, 2005

One more ways is :DriverManager.getDriver(DB.URL)

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karthik

• Jun 12th, 2006

Plz supraja tell me the coding without having the method Class.forname. send it to my mail id kkk_252003@yahoo.com

Rajesh

• Dec 6th, 2005

You can connect database using DAO(Data Access Object).If u need clear info mail me to: rokkam_rajesh@rediffmail.com

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A) TrueB) FalseExplanation: This is the new feature in the JDBC 2.0 API usage is Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);

anitpatel

 Profile Answers by anitpatel Questions by anitpatel

• Nov 6th, 2009

True. One has to call insertRow() programmatically to get the resultset data changes reflected in database. The CONCUR_UPDATABLE implementation can be driver specific. If driver does not support this mode of update, it will not allow the resultset update.

jitender kumar

 Profile Answers by jitender kumar Questions by jitender kumar

• May 6th, 2006

False because it only update in resultset

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A) This problem can be caused by running a JDBC applet in a browser that supports the JDK 1.0.2, such as Netscape Navigator 3.0. The JDK 1.0.2 does not contain the JDBC API, so the DriverManager class typically isn't found by the Java virtual machine runningB) Most of the browsers cannot download java.* because of security reasons. Hence many vendors of all-Java JDBC drivers supply versions of the...

ajay

• Nov 21st, 2014

A

vinaymudgil007

 Profile Answers by vinaymudgil007 Questions by vinaymudgil007

• Jun 8th, 2010

My understanding says that it should be ==> ( c )

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A) Open DataBase connectivity

sandeep

• Feb 16th, 2015

Open database connectivity

atulsonkar

• Jun 5th, 2006

Open Database Connectivity

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A) Type 4 driver, or, "native protocol, pure Java" driver converts JDBC calls into the network protocol used by the database directly.B) A Type 4 driver requires no client software, so it's ideal for deployment to browsers at runtime.C) As Type 4 drivers are 100% Java, use Java sockets to connect to the database, and require no client-side data access code, they are ideal for applets or other download...

Vicky Mehra

• Apr 1st, 2014

A

Farkalit Usman

• Mar 20th, 2006

D is false, since driver is independent of browsers.

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A) java.sql.DatabaseMetaData.B) java.sql.resultsetmetadata

Chaithanya

• Oct 27th, 2014

DatabaseMetaData

ruchiverma

 Profile Answers by ruchiverma Questions by ruchiverma

• Oct 11th, 2008

Answer is java.sql.resultsetmetadata

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Gandharv

• May 1st, 2006

ResultSetMetaData interface is used to find out the types and properties of the column in the ResultSet whereas DatabaseMetaData interface provides comprehensive information about the database as a whole.

ashok

• Mar 21st, 2006

If u want to make ur application as idenpendent of the database tables,thenu can dynamically retreive the information about the database using the DatabaseMetaData and can retrieve information about the tables in the database using the ResultSetMetaData 

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bharaniprasanth

 Profile Answers by bharaniprasanth Questions by bharaniprasanth

• Mar 14th, 2008

Again there is soft deployment and hard deployment..

Abdul Gafoor

• Feb 12th, 2006

My name is Abdul Gafoor, I am a sun certified J2EE Developer.I am using Weblogic 8.1 server.Compile bean and interface program.create jar file.Before the deploy jar file.You must create connection poo...

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