The Prepared statement interface extends from statement. An statement specify a precompiled SQL Statement. This specify a same object, that execute multiple times.
Understand with Example
The code illustrates you an example from JDBC Prepared Statement Close. In this program, the code describe how the Jdbc Prepared statement is closed. For this we have a class Jdbc Prepared statement, that include the main method and the list of steps to be carried out are as follow-
Before implementing class, import a Java.sql package, that contains a set of classes defining network interface for interaction between java front-end application and database.
Inside the main( ) method, we have a try block includes the loading a driver by calling a class.forName( ) and accept driver class as argument.
The DriverManager.getConnection ( ) return you a connection object. This object return you a built in connection between url and database.
prepareStatement ( ) :This method is used to execute the same statement object many times, This reduces the execution time for statement.
executeQuery( ): This method is used to retrieve the record set from a table. The select statement return you a result set .
next ( ) : This method return you the next elements in the series.
getString ( ):The Result Set call a getString ( ),returns you a string object representation
close ( ) :The prepared statement object call close ( ),that close the connection between url and database.
Finally the print ln print the Id,Name respectively from the result set as output.
In case there is an exception in try block, The catch block caught and handle the exception.JdbcPreparedstatementClose.java
Id Name Class 1 komal 11 2 santosh 11 3 rakesh 9 4 ajay 11 5 bhanu 10