Java Reference
In-Depth Information
setDate(
int
,
Date
)
—Inserts a
Date
object (from the
java.sql
package) at the
indicated position.
n
setDouble(
int
,
double
)
—Inserts a
double
value at the indicated position.
n
setFloat(
int
,
float
)
—Inserts a
float
value at the indicated position.
n
setInt(
int
,
int
)
—Inserts an
int
value at the indicated position.
n
setLong(
int
,
long
)
—Inserts a
long
value at the indicated position.
n
setShort(
int
,
short
)
—Inserts a
short
value at the indicated position.
n
setString(
int
,
String
)
—Inserts a
String
value at the indicated position.
n
There's also a
setNull(
int
,
int
)
method that stores SQL's version of a null (empty)
value at the position indicated by the first argument.
The second argument to
setNull()
should be a class variable from the
Types
class in
java.sql
to indicate what kind of SQL value belongs in that position.
There are class variables for each of the SQL data types. This list, which is not complete,
includes some of the most commonly used variables:
BIGINT
,
BIT
,
CHAR
,
DATE
,
DECIMAL
,
DOUBLE
,
FLOAT
,
INTEGER
,
SMALLINT
,
TINYINT
, and
VARCHAR
.
The following code puts a null
CHAR
value at the fifth position in a prepared statement
called
ps
:
18
ps.setNull(5, Types.CHAR);
The next project demonstrates the use of a prepared statement to add stock quote data to
a database. Quotes are collected from the Yahoo! website.
As a service to people who follow the stock market, Yahoo! offers a Download
Spreadsheet link on its main stock quote page for each ticker symbol.
To see this link, look up a stock quote on Yahoo! or go directly to a page such as
this one:
Below the price chart, you can find a Download Data link. Here's what the link looks
like for Sun Microsystems:
