JDBC Statement example – Update a record

Statement statement = dbConnection.createStatement();
// execute the update SQL stetement
statement.executeUpdate(updateTableSQL);

package com.mkyong.jdbc;
 
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
 
public class JDBCStatementUpdateExample {
 
	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 {
 
			updateRecordIntoDbUserTable();
 
		} catch (SQLException e) {
 
			System.out.println(e.getMessage());
 
		}
 
	}
 
	private static void updateRecordIntoDbUserTable() throws SQLException {
 
		Connection dbConnection = null;
		Statement statement = null;
 
		String updateTableSQL = "UPDATE DBUSER"
				+ " SET USERNAME = 'mkyong_new' "
				+ " WHERE USER_ID = 1";
 
		try {
			dbConnection = getDBConnection();
			statement = dbConnection.createStatement();
 
			System.out.println(updateTableSQL);
 
			// execute update SQL stetement
			statement.execute(updateTableSQL);
 
			System.out.println("Record is updated to DBUSER table!");
 
		} catch (SQLException e) {
 
			System.out.println(e.getMessage());
 
		} finally {
 
			if (statement != null) {
				statement.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;
 
	}
 
}

UPDATE DBUSER SET USERNAME = 'mkyong_new'  WHERE USER_ID = 1
Record IS updated INTO DBUSER TABLE!