The PreparedStatement interface is a subinterface of Statement. It is used to execute parameterized query.
Let's see the example of parameterized query:
As you can see, we are passing parameter (?) for the values. Its value will be set by calling the setter methods of PreparedStatement.
Why use PreparedStatement?
Improves performance: The performance of the application will be faster if you use PreparedStatement interface because query is compiled only once.
How to get the instance of PreparedStatement?
The prepareStatement() method of Connection interface is used to return the object of PreparedStatement. Syntax:
Methods of PreparedStatement interface
The important methods of PreparedStatement interface are given below:
Example of PreparedStatement interface that inserts the record
First of all create table as given below:
Now insert records in this table by the code given below:
Example of PreparedStatement interface that updates the record
Example of PreparedStatement interface that deletes the record
Example of PreparedStatement interface that retrieve the records of a table
Example of PreparedStatement to insert records until user press n