Mapping JDBC Types to Java Types 

The conceptual mapping between JDBC types and Java types is shown in the following table. The Open SQL programmer should consider this mapping when writing code. For example, if a value in the database is SMALLINT, a short should be the data type used as output or input host variable of a SQL statement.

Mapping JDBC types to Java types

JDBC Type	Java Type
VARCHAR	String
LONGVARCHAR	String
CLOB	java.sql.Clob
VARBINARY	byte[]
LONGVARBINARY	byte[]
BLOB	java.sql.Blob
SMALLINT	Short
INTEGER	Integer
BIGINT	Long
REAL	Float
DOUBLE	Double
DECIMAL	java.math.BigDecimal
DATE	java.sql.Date
TIME	java.sql.Time
TIMESTAMP	java.sql.Timestamp