MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class MainClass {
    public static void main(String[] args) {
        Connection connection = null;
        Statement statement = null;
        try {
            Class.forName("org.gjt.mm.mysql.Driver").newInstance();
            String url = "jdbc:mysql://localhost/hrapp";
            connection = DriverManager.getConnection(url, "username", "password");

            statement = connection.createStatement();
            String employees1SQL = "UPDATE employees SET " + "num_dependants = 4 " + "WHERE employee_id = 123456";
            statement.executeUpdate(employees1SQL);
            String employees2SQL = "UPDATE employees SET " + "num_dependants = 4 " + "WHERE employee_id = 123457";
            statement.executeUpdate(employees2SQL);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (statement != null) {
                try {
                    statement.close();
                } catch (SQLException e) {
                }
            }
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                }
            }
        }
    }

}