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ConnectionObject.java
public class ConnectionObject { static String DB_DRIVER = "com.MysqL.jdbc.Driver"; static String DB_CONNECTION = "jdbc:MysqL://localhost:3306/test"; static String DB_USER = "userName"; static String DB_PASSWORD = "password"; public static Connection getConnection() { Connection connection = null; Class.forName(DB_DRIVER); connection = DriverManager.getConnection(DB_CONNECTION,DB_USER,DB_PASSWORD); return connection; } }
public void batchUpdateUsingPreparedStatement() throws sqlException { int[] result = null; String sql = "update person set firstName=?,lastName=? where id=?"; // '?' is the placeholder for the parameter try { PreparedStatement stmt = connection.prepareStatement(sql); connection.setAutoCommit(false); stmt.setString(1,"Abc"); // Value for the first parameter,namely 'firstName' stmt.setString(2,"Def"); // Value for the second parameter,namely 'lastName' stmt.setInt(3,1); // Value for the third parameter,namely 'id' stmt.addBatch(); // Add to Batch stmt.setString(1,"Xyz"); stmt.setString(2,"Uvw"); stmt.setInt(3,2); stmt.addBatch(); // Add second query to the Batch result = stmt.executeBatch(); // execute the Batch and commit connection.commit(); } catch (sqlException e) { connection.rollback(); e.printstacktrace(); } finally { if (connection != null) connection.close(); } System.out.println("Number of rows affected: " + result.length); }
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