Skip to main content

How I teach Java in 1hr 5 sessions

I know a lot of people can disagree with this but I am trying to keep it simple and as only my own opinion.

It took me more than 5 yrs to design this syllabus to help beginners learn and get motivated to program in Java. When I started teaching I use to take 10-15 days to teach java and I can clearly see on participants faces that they were not confident even after spending so much time with them. However recently I was able to successfully use a shorter And I am sure this won't be the final one and it will change a lot after few more batches. And the only way I do this is by
focusing on important concepts and cutting dumb one's in a language to accomplish my objectives.

Session 1
  1.   Data Types (int, double, String )  Class Notes
  2.   Operators (Arithmatic - +,-,*,/ )
  3.   Functions
  Homework -

  •  Write 50 functions and execute them from main method            
  •  Write functions with 0 or more input parameters
  •  Write functions that returns a value

Session 2 (Point here is to introduce Objects early and not to bullshit with amazing powers of Object, keep it simple)
  1.   Introduce Class and Objects 
  2.   Introduce Java Beans Classes (i.e. Objects with only Data) 
  3.   Introduce Classes with only functions (i.e. Service Layer or Business Logic Classes)
  4.   Introduce ArrayList (i.e. Object with data and logic to operate on it)
  5.   Summary - We mostly use Object in the above three ways.
  Homework -

  •  Write 20 Java Beans classes              
  •  Write some classes which operates on the above classes as Service Layer or Business Logic

 Session 3 (Write Simple Applications)
  1.  ContactApp - Contact Java Bean class and ContactService with ArrayList to add and getAll functions
  2.   FeedbackApp - bean and FeedbackService for add and getAll
  3.  RegistrationApp
 Session 4 (Try writing more simple applications, introduce interface)
  1.   Introduce Interfaces
  2.   Introduce Map, HashMap, List, ArrayList, Set, HashSet
  3.   Start writing interfaces for Service classes introduced in Session-2 & Session-3

  •    Exception handling              
  •    Write 5 small two class apps

 Session 5 (Write more small apps and introduce control and loop statements)
  1.    Introduce Control and Loop statements
  2.    Build 3 small apps with 2 Java Beans, Interface and Implementation
    Homework - Learn from the book (Arrays, Generics, Annotations)



Anonymous said…
could you post pdf's of the courses or make future posts were you walk us through every sesion
Hi dude, I didn't see Thread part of your syllabus , am I missing something or its purposefully left out, In my opinion Thread is something you can not ignore if you are doing Java programming.

Why String is immutable in Java
afx_efx said…
+1 on the pdf's or possibly videos?
Intesar said…
Updated blog with Class notes
nofearinc said…
I'm also interested in the PDFs, however I didn't quite get is this 5x1h sessions or a total of 1 hour (which seems impossible to me)? We do trainings with 16h of lectures and 32h of exercises for beginners and it's been proved to work here for most people - the more intense, the higher the chance that people didn't get the basic concepts.
John Alert said…
I have read your blog its very attractive and impressive. I like it your blog.

Java Training in Chennai Core Java Training in Chennai Core Java Training in Chennai

Java Online Training Java Online Training Core Java 8 Training in Chennai java 8 online training JavaEE Training in Chennai Java EE Training in Chennai
John Alert said…
Java Training Institutes Java Training Institutes Java EE Training in Chennai Java EE Training in Chennai Java Spring Hibernate Training Institutes in Chennai J2EE Training Institutes in Chennai J2EE Training Institutes in Chennai Core Java Training Institutes in Chennai Core Java Training Institutes in Chennai

Popular posts from this blog

JPA 2 new feature @ElementCollection explained

@ElementCollection is new annotation introduced in JPA 2.0, This will help us get rid of One-Many and Many-One shitty syntax.

Example 1: Stores list of Strings in an Entity

public class Users implements Serializable {

    private static final long serialVersionUID = 1L;
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private List<String> certifications = new ArrayList<String>();

    public Long getId() {
        return id;

    public void setId(Long id) { = id;

    public List<String> getCertifications() {
        return certifications;

    public void setCertifications(List<String> certifications) {
        this.certifications = certifications;

        Users u = new Users();
        u.getCertifications().add("Sun Certified Java Programmer");

Generated Tables

Column --> ID
    Row             1


Validating CSV Files

What is CsvValidator ?
  A Java framework which validates any CSV files something similar to XML validation using XSD.

Why should I use this ?
  You don't have to use this and in fact its easy to write something your own and also checkout its source code for reference.

Why did I write this ?
  Some of our projects integrate with third party application which exchanges information in CSV files so I thought of writing a generic validator which can be hooked in multiple projects or can be used by QA for integration testing.

What is the license clause ?

Are there any JUnit test cases for me checkout ?
 Yes, source

How to integrate in my existing project ?

Just add the Jar which can be downloaded from here CsvValidator.jar and you are good.

Instantiate CsvValidator constructor which takes these 3 arguements

         // filename is the the file to be validated and here is a sample         // list - defines all the fields in the above csv file ( a field has index, type, isOptional, rege…