Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

public class Main {
    public static Connection getConnection() throws Exception {
        String driver = "org.gjt.mm.mysql.Driver";
        String url = "jdbc:mysql://localhost/databaseName";
        String username = "root";
        String password = "root";
        Class.forName(driver);
        Connection conn = DriverManager.getConnection(url, username, password);
        return conn;
    }

    public static void main(String[] args) throws Exception {
        String id = "0001";
        Connection conn = null;
        PreparedStatement pstmt = null;
        try {
            conn = getConnection();
            String query = "insert into nullable_table(id,string_column, int_column) values(?, ?, ?)";

            // create PrepareStatement object
            pstmt = conn.prepareStatement(query);
            pstmt.setString(1, id);
            pstmt.setNull(2, java.sql.Types.VARCHAR);
            pstmt.setNull(3, java.sql.Types.INTEGER);

            // execute query, and return number of rows created
            int rowCount = pstmt.executeUpdate();
            System.out.println("rowCount=" + rowCount);
        } finally {
            pstmt.close();
            conn.close();
        }
    }
}