1).Statement
2).PreparedStatement
3).CallableStatement
Once a connection is obtained we can interact with the database.These three are Interfaces.By using these three statements we can do the operations on Databases using the methods provided in Interfaces.
Statement: Use for general-purpose access to your database. Useful when you are using static SQL statements at runtime. The Statement interface cannot accept parameters.
PreparedStatement : Use when you plan to use the SQL statements many times. The PreparedStatement interface accepts input parameters at runtime.
CallableStatement : Use when you want to access database stored procedures. The CallableStatement interface can also accept runtime input parameters.