IBM DB2 - JDBC interfaces for executing SQL; Creating and modifying database objects using the Statement.executeUpdate method

try
{
// Load the driver
Class.forName("com.ibm.db2.jcc.DB2Driver"); 3a
System.out.println("**** Loaded the JDBC driver");
// Create the connection using the IBM Data Server Driver for JDBC and SQLJ
con = DriverManager.getConnection (url); 3b
// Commit changes manually
con.setAutoCommit(false);
System.out.println("**** Created a JDBC connection to the data source");
// Create the Statement
stmt = con.createStatement(); 4a
System.out.println("**** Created JDBC Statement object");
// Execute a query and generate a ResultSet instance
rs = stmt.executeQuery("SELECT EMPNO FROM EMPLOYEE"); 4b
System.out.println("**** Created JDBC ResultSet object");
// Print all of the employee numbers to standard output device
while (rs.next()) {
empNo = rs.getString(1);
System.out.println("Employee number="+empNo);
}
System.out.println("**** Fetched all rows from JDBC ResultSet");
// Close the ResultSet
rs.close();
System.out.println("**** Closed JDBC ResultSet");
// Close the Statement
stmt.close();
System.out.println("**** Closed JDBC Statement");
// Connection must be on a unit-of-work boundary to allow close
con.commit();
System.out.println ( "**** Transaction committed" );
// Close the connection
con.close(); 6
System.out.println("**** Disconnected from data source");
System.out.println("**** JDBC Exit from class EzJava - no errors");
}
catch (ClassNotFoundException e)
{
System.err.println("Could not load JDBC driver");
System.out.println("Exception:"+e);
e.printStackTrace();
}
catch(SQLException ex) 5
{
System.err.println("SQLException information");
while(ex!=null) {
System.err.println ("Error msg: " + ex.getMessage());
System.err.println ("SQLSTATE: " + ex.getSQLState());
System.err.println ("Error code: " + ex.getErrorCode());
ex.printStackTrace();
ex = ex.getNextException(); // For drivers that support chained exceptions
}
}
} // End main
} // End EzJava
8 Application Programming Guide and Reference for Java
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