The document discusses recommendations for computer science students before graduating, including taking programming courses focused on object-oriented principles and design patterns, finding internships that involve programming work, learning English, studying microeconomics, completing sample applications to demonstrate skills, and being active in online communities. It also emphasizes the importance of documentation, graduating quickly, avoiding dismissing non-IT courses, and focusing on skills rather than specific future jobs.

1. Seminar Pengantar PKL D III Ilkom
@ifnubima
ifnubima@gmail.com
ifnubim.org

2. What You Need from a Platform?
 Open Technology: Open Source, Free Software, Open
Standard
 Good Language Structure
 Ecosystem
 Platform Range
 Industry Acceptance
 Proven, widely used, lots of options
 Complement and Substitute Solution
 Continues Development
 Popularity

3. Why Java is a Better Technology?
 WORA, Write Once Run Anywhere.
 One language for all platform: Desktop, Mobile, Web/Enterprise
 Portable
 OOP
 JDK, JVM and Garbage Collector
 Logistics
 Library
 Framework
 Servers
 Resource : tutorial, white paper, case study
 Precision
 Mathematic calculation
 Number handling
 Security Model

4. Why Java is a Better Technology?
 Bleeding Edge Technology Run on Java
 Hadoop – Map Reduce and Distributed File System
 Lucene – Full Text search and Information Retrieval
 Apache Cassandra – NoSQL Database
 Support from big software vendor
 Oracle
 IBM
 Spring Source / VMWare
 JBoss / Red Hat

5. Why Java Good For Us?
 High Paid Developer
 Great Career Path
 Working Overseas (Singapore, Malaysia, US, Europe)
 Big Company Using Java
 Banking, Insurance, Financial institution : BCA, Mandiri,
Permata, Asuransi Wahana Tata, ACC, etc.
 Telco : Telkomsel, XL, Axis, Indosat, etc
 Manufacture: Astra
 Startup : rakuten, blibli
 Zero investment to start learning Java
 Zero investment to start Java Company
 Tons of documents, books, tutorials and forums

6. How To Start?
 Read Books
 Java Desktop - Ifnu Bima
 JENI - http://space.meruvian.org/jtechnopreneur/jeni
 Java Tutorial - http://docs.oracle.com/javase/tutorial/
 Java EE - http://download.oracle.com/javaee/6/tutorial/doc/javaeetutorial6.pdf
 Baca, Tahu, Paham, Hafal
 Use Java in Your Project
 http://code.google.com/p/project-template/
 https://github.com/endymuhardin
 Lihat, Amati, Tiru, Modifikasi
 Internship
 Certification OJCP (SCJP), SCWCD, SCBD, SCEA – $130. Inixindo
or MII

7. What Java Looks Like?

8. Typical Java Web Application
Load UI
Browser
Webserver
(apache httpd)
Get/Post data
using JSON REST Service
Cache Server App Server
(memcache) (tomcat)
Database
(MySQL)

9. Important Things To Learn
 Framework
 Spring – Dependency Injection, MVC
 Hibernate – Object Relational Mapping
 JSP – Java Server Pages
 UI
 HTML, CSS
 JavaScript, jQuery, JSON
 Server
 Tomcat – Application Server
 MySQL – Database Server
 Linux – OS Server
 Apache httpd - Webserver
 Build Tools and Test
 Maven – Build tools
 Junit – Unit Testing
 DB Unit – Unit testing for database application

10. Java Love Patterns
 MVC
 Model
 View
 Controller
 Façade – Also known as Service Pattern
 DAO – Data Access Object

11. MVC
http://www.skywayperspectives.org/docum
entation/6.3/images/recipes/mvc_whole.jpg

12. Model / Entity
@Entity
@Table(name = "T_USER")
public class User implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "USER_ID")
private Integer userId;
@Column(name = "BIRTHDATE")
@Temporal(TemporalType.DATE)
private Date birthdate;
@Column(name = "PASSWORD")
private String password;
@Column(name = "USERNAME")
private String username;
}

13. Controller
@Controller
public class UserController {
@Autowired private UserService userService;
@RequestMapping(value="/user/list",method= RequestMethod.GET)
public ModelAndView userList(){
ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("/userList");
modelAndView.addObject("users", userService.getUsers());
return modelAndView;
}
}

14. Façade / Service Pattern
public interface UserService { @Service
@Transactional(readOnly=true)
List<User> getUsers(); public class UserServiceImpl implements
UserService{
}
@Autowired
private UserDao userDao;
@Override
public List<User> getUsers() {
return userDao.getUsers();
}
}

15. DAO
@Repository
public class UserDao {
@Autowired
private SessionFactory sessionFactory;
public List<User> getUsers() {
return sessionFactory.getCurrentSession().createQuery("from User u")
.list();
}
}

16. View
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>User Data</title>
</head>
<body>
<h1>User List</h1>
<table style="border: 1px">
<tr>
<td>User Id</td>
<td>User Name</td>
<td>Birth Date</td>
</tr>
<c:forEach var="user" items="${users}">
<tr>
<td>${user.userId}</td>
<td>${user.username}</td>
<td>${user.birthdate}</td>
</tr>
</c:forEach>
</table>
</body>
</html>

17. Typical Java Web Application

18. 10 Things You Need to Do Before
Graduated
 Belajar menulis - “A software doesn’t exist, if it doesn’t have
documentation!”
 Kuliah yang bener dan Lulus Cepat– Konsep Ilmu Komputer yang
kuat akan sangat membantumu di sesi wawancara kerja
 Ambil kursus pemrograman, terutama OOP – Belajar
programming dengan jalur yang tepat dan metode penulisan kode
program yang mengikuti design pattern dan code convention yang
baik.
 Cari tempat magang yang bagus – Setiap universitas pasti
mengadakan program magang, manfaatkan dengan baik dan carilah
tempat magang yang memberi pekerjaan programming, jangan ambil
tugas magang yang hanya memberi tugas input data.
 Belajar bahasa inggris – Surfing di internet tanpa bisa bahasa inggris
sama saja seperti nyetir ga bisa baca rambu lalu lintas.

19. 10 Things to Do Before You
Graduate!
 Belajar mikro-ekonomi – Belajar ekonomi dan bayangkan dirimu
menjadi enterprenur nantinya, jgn mau jadi bawahan terus.
 Jangan meremehkan mata kuliah non IT hanya karena
membosankan – IP jelek hanya akan menimbulkan banyak keraguan
dan impresi yang tidak bagus pada waktu mencari kerja nanti.
 Berhentilah mengkhawatirkan nanti akan kerja di mana – Do it
the best you can do, and it will bring you to the best workplace
available.
 Buatlah sebuah aplikasi sederhana sampai selesai – Aplikasi ini
nantinya bisa digunakan pada waktu wawancara, untuk membuktikan
bahwa kita bisa menerapkan prinsip “get things done!” tidak cuma
coding kesana kemari tapi tidak menyelesaikan pekerjaan.
 Aktif di komunitas – Dengan sering memposting ke forum/milis kita
akan tahu apakah pemahaman dan penguasaan terhadap suatu konsep
benar atau salah, cukup atau kurang. Ini penting sekali untuk
mengetahui sebenarnya kita siap atau tidak terjun di dunia kerja.