JDBC Tutorials - Herong's Tutorial Examples - v3.12, by Dr. Herong Yang
updateXXX() - Updating Column Values for Row Update or Insert
This section describes updateXXX() methods used to update column values for the current row for database update or the insert row for inserting a new row.
When a ResultSet object is created with update capability, you can call updateXXX() methods to update column values to prepare for calling updateRow() or insertRow() method store the updated row or a new row to the target table. All updateXXX() methods support two types of parameters to specify a column:
JDBC supports many updateXXX() methods, one for each Java data type, so that you can set column values directly with the desired Java data types without any conversion. Here is a list of updateXXX() methods:
Here is sample program that uses different updateXXX() methods to set column values with different data types:
/* DerbyUpdateMethods.java * Copyright (c) HerongYang.com. All Rights Reserved. */ import java.sql.*; public class DerbyUpdateMethods { public static void main(String [] args) { Connection con = null; try { con = DriverManager.getConnection("jdbc:derby://localhost/TestDB"); // Create a Statement for scrollable ResultSet Statement sta = con.createStatement( ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_UPDATABLE); // Catch the ResultSet object ResultSet res = sta.executeQuery( "SELECT * FROM Profile WHERE 1=2"); // Check ResultSet's updatability if (res.getConcurrency() == ResultSet.CONCUR_READ_ONLY) { System.out.println("ResultSet non-updatable."); } else { System.out.println("ResultSet updatable."); } // Move the cursor to the insert row res.moveToInsertRow(); // Prepare column values in different data types String firstName = "Alex"; String lastName = "King"; double points = 654.321; Date birthDate = Date.valueOf("1966-06-06"); Timestamp now = new Timestamp(System.currentTimeMillis()); // Set the new first name and last name res.updateString("FirstName", firstName); res.updateString("LastName", lastName); res.updateDouble("Point", points); res.updateDate("BirthDate", birthDate); res.updateTimestamp("ModTime", now); // Store the insert into database res.insertRow(); // Move the cursor back to the current row res.moveToCurrentRow(); System.out.println("Row inserted ok."); // Close ResultSet and Statement res.close(); sta.close(); con.close(); } catch (Exception e) { System.err.println("Exception: "+e.getMessage()); e.printStackTrace(); } } }
Note that the Date class used in this program is from the java.sql.* package, not from the java.util.* package. There is no problem with the execution:
ResultSet updatable. Row inserted ok.
Table of Contents
JDBC (Java Database Connectivity) Introduction
Installing and Running Java DB - Derby
Derby (Java DB) JDBC DataSource Objects
Java DB (Derby) - DML Statements
►Java DB (Derby) - ResultSet Objects of Queries
ResultSet Cursor and Scrollability
ResultSet Cursor Initial Position: Before First Row
Retrieving Column Values with getXXX() Methods
ResultSet Default Type: Forward-only
Scrollable ResultSet and Moving Cursor Backward
ResultSet Objects with Update Capability
insertRow() - Inserting New Rows through ResultSet Objects
►updateXXX() - Updating Column Values for Row Update or Insert
deleteRow() - Deleting Rows through ResultSet Objects
Java DB (Derby) - PreparedStatement
MySQL JDBC Driver (MySQL Connector/J)
MySQL - Reference Implementation of JdbcRowSet
MySQL - JBDC CallableStatement
MySQL CLOB (Character Large Object) - TEXT
MySQL BLOB (Binary Large Object) - BLOB
Oracle Express Edition Installation on Windows
Oracle - Reference Implementation of JdbcRowSet
Oracle - JBDC CallableStatement
Oracle CLOB (Character Large Object) - TEXT
Oracle BLOB (Binary Large Object) - BLOB
Microsoft SQL Server Express Edition
Microsoft JDBC Driver for SQL Server
Microsoft JDBC Driver - Query Statements and Result Sets
Microsoft JDBC Driver - DatabaseMetaData Object
Microsoft JDBC Driver - DDL Statements
Microsoft JDBC Driver - DML Statements
SQL Server - PreparedStatement
SQL Server CLOB (Character Large Object) - TEXT
SQL Server BLOB (Binary Large Object) - BLOB
JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver
JDBC-ODBC Bridge Driver - Flat Text Files
JDBC-ODBC Bridge Driver - MS Access
JDBC-ODBC Bridge Driver - MS SQL Server
Summary of JDBC Drivers and Database Servers