Java Reference
In-Depth Information
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// Fig. 24.29: JdbcRowSetTest.java
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// Displaying the contents of the Authors table using JdbcRowSet.
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import
java.sql.ResultSetMetaData;
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import
java.sql.SQLException;
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6
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import
javax.sql.rowset.JdbcRowSet;
import
javax.sql.rowset.RowSetProvider;
public class
JdbcRowSetTest
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{
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// JDBC driver name and database URL
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private static final
String
DATABASE_URL
=
"jdbc:derby:books"
;
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private static final
String
USERNAME
=
"deitel"
;
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private static final
String
PASSWORD
=
"deitel"
;
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public static void
main(String args[])
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{
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// connect to database books and query database
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try
(JdbcRowSet rowSet =
RowSetProvider.newFactory().createJdbcRowSet())
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{
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// specify JdbcRowSet properties
rowSet.setUrl(
DATABASE_URL
);
rowSet.setUsername(
USERNAME
);
rowSet.setPassword(
PASSWORD
);
rowSet.setCommand(
"SELECT * FROM Authors")
;
// set query
rowSet.execute();
// execute query
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// process query results
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ResultSetMetaData metaData = rowSet.getMetaData();
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int
numberOfColumns = metaData.getColumnCount();
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System.out.printf(
"Authors Table of Books Database:%n%n"
);
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// display rowset header
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for
(
int
i =
1
; i <= numberOfColumns; i++)
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System.out.printf(
"%-8s\t"
, metaData.getColumnName(i));
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System.out.println();
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// display each row
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while
(
rowSet.next()
)
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{
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for
(
int
i =
1
; i <= numberOfColumns; i++)
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rowSet.getObject(i)
System.out.printf(
"%-8s\t"
,
);
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System.out.println();
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}
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}
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catch
(SQLException sqlException)
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{
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sqlException.printStackTrace();
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System.exit(
1
);
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}
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}
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}
// end class JdbcRowSetTest
Fig. 24.29
|
Displaying the contents of the
Authors
table using
JdbcRowSet
. (Part 1 of 2.)
