What happens if connection is not closed in jdbc?

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How does jdbc connect to database?

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Can resultset be null in java?

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Does multiple concurrent open statements per connection are supported by the JDBC-ODBC Bridge?

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What is odbc and jdbc drivers?

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Hi my doubt is that preparedStatement is a interface means which has no implemenation.plz go thru the code below String sql = "SELECT * FROM movies WHERE year_made = ?"; prest = con.prepareStatement(sql); prest.setInt(1,2002); ResultSet rs1 = prest.executeQuery(); Now setInt and executeQuery how it works since it is interface it does not have implementation how it works, how executeQuery returns result from database as executequery method has no implementation even in Statement interface.

4 Answers   Cybermate, Hexaware,

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code to insert values/rows into oracle database from a java swing textfield when a button is pressed(using preparedstatements)

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How can you make the connection using jdbc?

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What does the jdbc resultsetmetadata interface?

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How a driver can be loaded?

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What are the types of jdbc drivers that exist?

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What are the higher level apis under development on top of jdbc currently?

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