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;

	}

}

Result

The username of “user_id = 1001” is updated to a new value ‘mkyong_new_value’.