Question { Merrill Lynch, 38616 }

What is the difference between pageContext and page
implicit objects in jsp?

Answer

PageContext: This is used to access page attributes and
also to access all the namespaces associated with a JSP
page. It provides a single API to manage the various scoped
attributes.
PageContext also provides access to several page attributes
like including some static or dynamic resource.
The object PageContext is written:
Javax.servlet.jsp.pagecontext

Page: The Page object denotes the JSP page, used for calling
any instance of a Page's servlet. It has page scope. First
type cast the servlet before accessing any method of the
servlet through the page.

The Page object is written: Java.lang.Object

Question { Oracle, 10075 }

What are the Abstract Classes provided by Java?

Answer

java.lang.Number
java.awt.PrintGraphics
java.awt.Graphics

Question { 5721 }

what r callable statement and give their proper use

Answer

Callable statement (java.sql.CallableStatement) are used for
calling a Stored Procedure.

Syntax is as below-
//prepare a procedure call
String procedureCall="call testProcedure(:1,:2,:3)";
//prepare a callable statement

CallableStatement
cStmt=connectionObject.prepareCall(procedureCall);

// Set the Input Parameters to the procedure
cStmt.setInt(1, testID);
cStmt.setInt(2, testNumber);

// Register Output Parameters
cStmt.registerOutParameter(3, Types.VARCHAR);

// Execute the Callable Statement
cStmt.execute();

// Resulting Values from the Callable Statement is assigned
to the Message variable
String message = cStmt.getString(3);