java JDBC数据库连接操作

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

public class JDBCDatabaseConnection {
    private static final String DBDRIVER = "org.gjt.mm.mysql.Driver";
    private static final String DBURL = "jdbc:mysql://localhost:3306/test";
    private static final String DBUSER = "root";     // root账号
    private static final String PASSWORD = "admin";  // 数据库密码

    public static void main(String[] args) throws Exception {
        Class.forName(DBDRIVER) ;
        Connection conn = DriverManager.getConnection(DBURL, DBUSER, PASSWORD) ;
        System.out.println(conn);
        conn.close() ;
    }
}