JDBC PreparedStatement example

Here’s an example to show you how to update a record in table via JDBC PreparedStatement. To issue a update statement, calls the PreparedStatement.executeUpdate() method like this :

String updateTableSQL = "UPDATE DBUSER SET USERNAME = ? WHERE USER_ID = ?";
PreparedStatement preparedStatement = dbConnection.prepareStatement(updateTableSQL);
preparedStatement.setString(1, "mkyong_new_value");
preparedStatement.setInt(2, 1001);
// execute insert SQL stetement
preparedStatement .executeUpdate();

Full example…

package com.mkyong.jdbc;
 
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
 
public class JDBCPreparedStatementUpdateExample {
 
	private static final String DB_DRIVER = "oracle.jdbc.driver.OracleDriver";
	private static final String DB_CONNECTION = "jdbc:oracle:thin:@localhost:1521:MKYONG";
	private static final String DB_USER = "user";
	private static final String DB_PASSWORD = "password";
 
	public static void main(String[] argv) {
 
		try {
 
			updateRecordToTable();
 
		} catch (SQLException e) {
 
			System.out.println(e.getMessage());
 
		}
 
	}
 
	private static void updateRecordToTable() throws SQLException {
 
		Connection dbConnection = null;
		PreparedStatement preparedStatement = null;
 
		String updateTableSQL = "UPDATE DBUSER SET USERNAME = ? "
				                  + " WHERE USER_ID = ?";
 
		try {
			dbConnection = getDBConnection();
			preparedStatement = dbConnection.prepareStatement(updateTableSQL);
 
			preparedStatement.setString(1, "mkyong_new_value");
			preparedStatement.setInt(2, 1001);
 
			// execute update SQL stetement
			preparedStatement.executeUpdate();
 
			System.out.println("Record is updated to DBUSER table!");
 
		} catch (SQLException e) {
 
			System.out.println(e.getMessage());
 
		} finally {
 
			if (preparedStatement != null) {
				preparedStatement.close();
			}
 
			if (dbConnection != null) {
				dbConnection.close();
			}
 
		}
 
	}
 
	private static Connection getDBConnection() {
 
		Connection dbConnection = null;
 
		try {
 
			Class.forName(DB_DRIVER);
 
		} catch (ClassNotFoundException e) {
 
			System.out.println(e.getMessage());
 
		}
 
		try {
 
			dbConnection = DriverManager.getConnection(
                            DB_CONNECTION, DB_USER,DB_PASSWORD);
			return dbConnection;
 
		} catch (SQLException e) {
 
			System.out.println(e.getMessage());
 
		}
 
		return dbConnection;
 
	}
 
}