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JDBC CallableStatement Interface

The CallableStatement interface is used to execute the SQL statement to invoke the stored procedure or function.

The java.sql.CallableStatement interface is a part of JDBC API that describes a standard abstraction for the CallableStatement object.

The java.sql.CallableStatement extends the java.sql.PreparedStatement interface.

The CallableStatement object provides support for both input and output parameters.

We can have business logic on the database by the use of stored procedures and functions that will make the performance better because these are precompiled.

The prepareCall() method of Connection interface returns the instance of CallableStatement. The general form is:

CallableStatement prepareCall("{ call procedurename(?,?...?)}");
CallableStatement stmt=con.prepareCall("{call proceduredemo(?,?)}");
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