mysql database in java code example
Example 1: java connect to mysql
import java.sql.*;
class MySqlConn{
public static void main(String args[]){
try{
Class.forName("com.mysql.cj.jdbc.Driver");
Connection conn = DriverManager.getConnection("jdbc:mysql://
localhost:3306/databasename","username","password");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select * from emp");
con.close();
}catch(Exception ex){
System.out.println(ex);
}
}
}
Example 2: mysqli database
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "test");
if (mysqli_connect_errno()) {
printf("Échec de la connexion : %s\n", mysqli_connect_error());
exit();
}
if ($result = $mysqli->query("SELECT DATABASE()")) {
$row = $result->fetch_row();
printf("La base de données courante est %s.\n", $row[0]);
$result->close();
}
$mysqli->select_db("world");
if ($result = $mysqli->query("SELECT DATABASE()")) {
$row = $result->fetch_row();
printf("La base de données courante est %s.\n", $row[0]);
$result->close();
}
$mysqli->close();
?>