Tips Cara Menciptakan Koneksi Ke Database Mysql Memakai Jdbc

// Langkah 1 : import package yang diperlukan import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException;  public class MySQLConnectionDemo {  public static void main(String[] args){   Connection conn = null;   try {        // Langkah 2:  mendaftarkan jdbc driver    Class.forName("com.mysql.jdbc.Driver");        // Langkah 3 : menciptakan database URL    String DB_URL = "jdbc:mysql://localhost/hris";    String DB_USERNAME = "root";    String DB_PASSWORD = "";        //Langkah 4 : menciptakan objek koneksi    conn = DriverManager.getConnection(DB_URL, DB_USERNAME, DB_PASSWORD);        System.out.println("Sukses menciptakan koneksi ke database MySQL");       } catch (ClassNotFoundException e) {    System.out.println("Tidak dapat meload driver database");    e.printStackTrace();   } catch (SQLException e) {    System.out.println("Tidak dapat menciptakan koneksi ke database");    e.printStackTrace();   } finally{    try {     // Langkah 5 : Selalu untuk menutup koneksi dikala sudah selesai     if(conn != null){      conn.close();     }         } catch (SQLException e) {     e.printStackTrace();    }   }   } } 

Output

Coba Anda jalankan kegiatan diatas, jikalau sukses menciptakan koneksi, maka akan menampilkan pesan ibarat berikut:

Sukses menciptakan koneksi ke database MySQL 

Sedangkan jikalau gagal, ibarat salah memasukkan user dan password database, maka akan menampilkan pesan error ibarat berikut ini:

Tidak dapat menciptakan koneksi ke databasejava.sql.SQLException: Access denied for user 'xxx'@'localhost' (using password: YES)  at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)  at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)  at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3515)  at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3447)  at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:911)   at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3953)  at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1276)  at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2048)  at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:723)  at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:46)  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)  at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)  at java.lang.reflect.Constructor.newInstance(Unknown Source)  at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)  at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)  at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)  at java.sql.DriverManager.getConnection(Unknown Source)  at java.sql.DriverManager.getConnection(Unknown Source)  at com.nursalim.twice.java.jdbc.MySQLConnectionDemo.main(MySQLConnectionDemo.java:21)