- Java Programming Examples
- Example - Home
- Example - Environment
- Example - Strings
- Example - Arrays
- Example - Date & Time
- Example - Methods
- Example - Files
- Example - Directories
- Example - Exceptions
- Example - Data Structure
- Example - Collections
- Example - Networking
- Example - Threading
- Example - Applets
- Example - Simple GUI
- Example - JDBC
- Example - Regular Exp
- Example - Apache PDF Box
- Example - Apache POI PPT
- Example - Apache POI Excel
- Example - Apache POI Word
- Example - OpenCV
- Example - Apache Tika
- Example - iText
- Java Tutorial
- Java - Tutorial
- Java Useful Resources
- Java - Quick Guide
- Java - Useful Resources
How to make a Savepoint & Rollback in Java
Problem Description
How to make a Savepoint & Rollback in Java?
Solution
Following example uses Rollback method of connection to Rollback to a previously saved SavePoint.
import java.sql.*; public class jdbcConn { public static void main(String[] args) throws Exception { Class.forName("org.apache.derby.jdbc.ClientDriver"); Connection con = DriverManager.getConnection( "jdbc:derby://localhost:1527/testDb","name","pass"); Statement stmt = con.createStatement(); String query1 = "insert into emp values(5,'name','job')"; String query2 = "select * from emp"; con.setAutoCommit(false); Savepoint spt1 = con.setSavepoint("svpt1"); stmt.execute(query1); ResultSet rs = stmt.executeQuery(query2); int no_of_rows = 0; while (rs.next()) { no_of_rows++; } System.out.println("rows before rollback statement = " + no_of_rows); con.rollback(spt1); con.commit(); no_of_rows = 0; rs = stmt.executeQuery(query2); while (rs.next()) { no_of_rows++; } System.out.println("rows after rollback statement = " + no_of_rows); } }
Result
The above code sample will produce the following result. The result may vary.
rows before rollback statement = 4 rows after rollback statement = 3
java_jdbc.htm
Advertisements