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Java Tutorial

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A structured handbook for learning Java from the ground up. This guide covers core Java concepts such as syntax, object-oriented programming, exception handling, collections, and basic file operations. With clear explanations and practical examples, learners gain a strong foundation to build scalable and reliable applications.

12 Modules

120 Lessons

English

2 Hrs

Show more

Reading Plan

MODULE 1

Java Basics

17 mins
lessonOverview of Java

1 min

lessonFeatures of Java

1 min

lessonSetting Java Enviroment

1 min

lessonIntroduction to JVM

1 min

lessonMy First Java Program

1 min

lessonVariable in Java

1 min

lessonData type and Identifier

1 min

lessonStatic and Initializer Block

1 min

lessonType Casting

1 min

lessonConditional Statement

1 min

lessonSwitch Statement

1 min

lessonLoops in Java

1 min

lessonBreak Continue Statement in Java

1 min

lessonOperators in Java

1 min

lessonJava Array

1 min

lessonWays to create object in Java

1 min

lessonCommand line Argument

1 min

MODULE 2

Java OOPS Concept

21 mins
lessonObjects and Classes

1 min

lessonMethod in Java

1 min

lessonJava is Strictly Pass by Value

1 min

lessonConstructor in Java

1 min

lessonJava Modifiers

1 min

lessonInheritance

1 min

lessonAggregation

1 min

lessonMethod Overloading

1 min

lessonMethod Overriding

1 min

lessonRuntime Polymorphism

1 min

lessonthis keyword

1 min

lessonGarbage Collection

1 min

lessonStatic in Java

1 min

lessonFinal in Java

1 min

lessoninstanceof Operator

1 min

lessonPackage

1 min

lessonSubPackage and Static Import

1 min

lessonAbstract class

1 min

lessonInterface

1 min

lessonNested Classes

1 min

lessonClasses vs. Interface

1 min

MODULE 3

Java String Handling

5 mins
lessonIntroduction to String

1 min

lessonString class Functions

1 min

lessonStringBuffer class

1 min

lessonStringBuilder class

1 min

lessonString Tokenizer

1 min

MODULE 4

Java Exception Handling

7 mins
lessonIntroduction to Exceptions

1 min

lessontry and catch block

1 min

lessontry with resource statement

1 min

lessonthrow, throws and finally

1 min

lessonUser made Exception Subclass

1 min

lessonMethod Overriding with Exception Handling

1 min

lessonChained Exceptions

1 min

MODULE 5

Java Multithreading

11 mins
lessonIntroduction to Multithreading

1 min

lessonThread Class

1 min

lessonCreating a thread

1 min

lessonJoining threads

1 min

lessonSleeping Thread in Java

1 min

lessonNaming Thread in Java

1 min

lessonThread Priority in Java

1 min

lessonDaemon Thread in Java

1 min

lessonSynchronization

1 min

lessonInterthread Communication

1 min

lessonThread group

1 min

MODULE 6

Advanced Concepts

6 mins
lessonEnumerations

1 min

lessonAutoboxing and Unboxing

1 min

lessonJava I/O Stream

1 min

lessonSerialization

1 min

lessonJava Networking

1 min

lessonGenerics

1 min

MODULE 7

Collection Framework

17 mins
lessonIntroduction to Collection

1 min

lessonCollection Interfaces

1 min

lessonCollection Classes

1 min

lessonIterator and ListIterator

1 min

lessonArray List Class

1 min

lessonLinked List Class

1 min

lessonHash Set Class

1 min

lessonlinkedhashset Class

1 min

lessonTree Set Class

1 min

lessonMap Interface

1 min

lessonHashmap Class

1 min

lessonTreemap Class

1 min

lessonHashTable Class

1 min

lessonCollections Class

1 min

lessonComparable Class

1 min

lessonComparator Interface

1 min

lessonLegacy Classes

1 min

MODULE 8

Java GUI

7 mins
lessonApplet

1 min

lessonEvent Handling

1 min

lessonAWT Part-1

1 min

lessonAWT Part-2

1 min

lessonSwing

1 min

lessonSwing Component Part-1

1 min

lessonSwing Component Part-2

1 min

MODULE 9

Java Wrapper Class

7 mins
lessonWrapper class

1 min

lessonByte class

1 min

lessonShort class

1 min

lessonFloat class

1 min

lessonDouble class

1 min

lessonBoolean class

1 min

lessonCharacter class

1 min

MODULE 10

Java Reflection

2 mins
lessonIntroduction to Reflection

1 min

lessonReflection classes

1 min

MODULE 11

JDBC

7 mins
lessonIntroduction to JDBC

1 min

lessonSQL Package

1 min

lessonSteps to Connect to Database

1 min

lessonConnecting to Access using Type-1 Driver

1 min

lessonConnecting to Oracle using Thin Driver

1 min

lessonConnecting to MySQL using Thin Driver

1 min

lessonConnecting to mongoDB Database

1 min

MODULE 12

Java Miscellaneous Concepts

13 mins
lessonRMI Application

1 min

lessonInner class

1 min

lessonFile Handling

1 min

lessonAbstract list

1 min

lessonAbstract Sequential list

1 min

lessonCopy On Write Array List

1 min

lessonAbstract Set

1 min

lessonEnum Set

1 min

lessonIdentityHashMap class

1 min

lessonSorted Map Interface

1 min

lessonQueue Interface

1 min

lessonDeQue Interface

1 min

lessonLayout Managers

1 min

Contributors

L
AP
VA

Java Tutorial

This handbook introduces Java step by step, starting with basic syntax and program structure. You’ll move into object-oriented concepts like classes, inheritance, polymorphism, and interfaces, followed by exception handling and collections. The focus stays on clarity and practical usage so learners can write clean, maintainable Java code.

Why This Handbook Matters

Java remains one of the most widely used programming languages for enterprise systems, backend services, and Android development. Learning Java strengthens your understanding of object-oriented design and prepares you for real-world software development at scale.

Ideal Learners for This Handbook

This handbook is ideal for beginners starting their programming journey, students learning object-oriented concepts, and developers transitioning to Java from other languages. It’s also useful for anyone preparing for technical interviews or backend development roles.

Prerequisites

This course is suitable for:

  • Basic understanding of how programs run on a computer
  • Familiarity with using a keyboard, text editor, or IDE
  • Willingness to learn programming logic and problem solving
  • No prior programming experience is mandatory

Run & Test your Code with our very own IDE that supports 16 languages

Open IDE

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HCL GUVI (Grab Your Vernacular Imprint) Geek Network Private Limited is a leading online learning and skills development company, incubated by IIT Madras and IIM Ahmedabad.

Established in 2014 and acquired by the HCL Group in 2022, HCL GUVI is dedicated to providing effective and high-quality learning and skilling programs that transcend language barriers in technology education. HCL GUVI today is trusted by over 3 million learners and 2000+ corporate partners.

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HCL GUVI (Grab Your Vernacular Imprint) Geek Network Private Limited is a leading online learning and skills development company, incubated by IIT Madras and IIM Ahmedabad.

Established in 2014 and acquired by the HCL Group in 2022, HCL GUVI is dedicated to providing effective and high-quality learning and skilling programs that transcend language barriers in technology education. HCL GUVI today is trusted by over 3 million learners and 2000+ corporate partners.

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