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Java Tutorial

Last Updated: June 21, 2023
By: javahandson
Java Notes

The Java Tutorial section covers the core concepts required to build a strong foundation in Java programming. You’ll learn topics such as Java basics, operators, flow control, OOP, arrays, strings, exception handling, collections, input/output, and multithreading. Each topic is explained in simple language with practical examples and step-by-step explanations. The section is useful for beginners as well as developers who want to refresh their fundamentals. It also prepares you for more advanced Java, Spring, and interview topics.

java language basics

Java basics for beginners
Structure of a Java program
JDK 11 installation on Windows
Keywords and Identifiers in Java: A Simple Beginner’s Guide
Literals in Java: Types, Rules, and the Traps Nobody Warns You About
Data types in Java with examples
Variables and Constants in Java
Type Conversion and Casting in Java (Primitives): A Beginner’s Guide
Wrapper Classes and Autoboxing in Java: A Beginner’s Guide
var in Java: Local Variable Type Inference (A Beginner’s Guide)

Operators in Java

Operators in Java
Unary Operators in Java
Bitwise Operators in Java
Ternary Operator in Java

flow control statements

Conditional Statements in Java: if, else-if, Nested if, switch and Ternary
for loop and nested for loop in Java
do while and while Loop in Java: Syntax, Examples, and Differences
break and continue statement in Java

Input and Output

Input and Output in Java

Understanding OOPS

Principles of Object-oriented Programming
Classes and Objects in Java
Access specifiers in Java
Class Members in Java
Types of data members
Class Types in Java
Constructors in Java
Methods in Java
Advanced Java method concepts
this and super Keywords in Java: A Complete Beginner Guide
static Keyword in Java: Variables, Methods, Blocks and Nested Classes Explained
final Keyword in Java: Variables, Methods, and Classes (A Beginner’s Guide)
Abstraction in Java
Polymorphism in Java
Encapsulation in Java: A Beginner-Friendly Guide with Examples
Understanding Inheritance in Java: Syntax, Types, and the Diamond Problem
Inheritance vs Composition in Java: A Practical Guide
Abstract Class in Java: When and Why to Use It (Examples)
Interface in Java Explained with Examples
Packages in Java
Object Class in Java: toString, equals, hashCode, getClass, and clone
Enum in Java: A Complete Beginner’s Guide with Examples
Nested and Inner Classes in Java: A Complete Beginner’s Guide
Type Casting in Java

java arrays

Jagged array in Java
Three-dimensional array in Java
Arrays in Java

java exceptions

Introduction to Exception Handling in Java
try, catch and finally, blocks
Throwing Exceptions in Java
Custom and Chained exceptions in Java
Exception Rules in Java

java strings

String in Java
String immutability in Java
String comparison in Java
StringBuffer in Java
StringBuilder in Java

java collections

Introduction to Collections Framework in Java
ArrayList in Java: List Interface Core Concepts & Internals (Beginner’s Guide)
LinkedList in Java Explained: ArrayList vs LinkedList (Internals)
List Interface in Java: ArrayList vs LinkedList vs Vector
HashSet in Java: How Sets Work (Beginner’s Guide)
HashSet vs LinkedHashSet: Ordering Without Sacrificing Speed
TreeSet in Java: Sorting, Comparators & NavigableSet Guide
HashMap in Java: Map Interface, Buckets & Hashing Explained
HashMap vs LinkedHashMap vs TreeMap in Java (A Beginner’s Guide)
LinkedHashMap in Java: Access Order & Building an LRU Cache
TreeMap in Java Explained: Sorting, NavigableMap & SortedMap
HashMap vs Hashtable vs ConcurrentHashMap in Java: A Beginner’s Guide
EnumMap and IdentityHashMap in Java: Two Special Maps Worth Knowing
Queue and Deque in Java: Interfaces and Core Methods (A Beginner’s Guide)
PriorityQueue in Java: Heap Internals & Comparators
ArrayDeque in Java: The Better Stack and Queue
Stack in Java: Why ArrayDeque Replaced It
Iterator and ListIterator in Java: Fail-Fast vs Fail-Safe
ConcurrentModificationException in Java: Causes and Fixes
Comparable vs Comparator in Java: Sorting Objects the Right Way
Sorting Collections in Java: Collections.sort & Custom Orders
Collections Utility Class in Java: sort, binarySearch, and unmodifiable

multithreading

Multithreading in Java: Threads and Concurrency Explained
Thread Life Cycle in Java: States and Transitions Explained
Thread Methods in Java: start, run, sleep, join, and more
Thread Priority in Java and Daemon Threads: A Beginner-Friendly Guide
Creating Threads in Java: Thread Class vs Runnable Interface
Thread Synchronization in Java: synchronized Keyword Explained
wait and notify in Java: How Threads Coordinate (Inter-Thread Communication)
The volatile Keyword in Java: The Visibility Guarantee and Its Limits
Deadlock in Java: Causes and How to Avoid It
Race Conditions and Thread Safety in Java
Introduction to java.util.concurrent Package in Java: A Beginner’s Map
ExecutorService in Java
Callable and Future in Java: Results, Exceptions & Timeouts
ThreadPoolExecutor in Java: How Thread Pools Really Work
CountDownLatch in Java with Examples
ScheduledExecutorService in Java: Run Tasks Later or on a Repeating Schedule
ReadWriteLock in Java Explained
ReentrantLock in Java: The Explicit-Lock Alternative to synchronized
CyclicBarrier in Java with Examples: The Reusable Rendezvous Point
Semaphore in Java Explained: Permits, acquire() and release()
Atomic Variables in Java: AtomicInteger, AtomicLong and CAS Explained
ConcurrentHashMap Internals Explained: Bins, Locks, and Lock-Free Reads
CopyOnWriteArrayList and CopyOnWriteArraySet in Java
BlockingQueue in Java: Producer-Consumer Pattern

Latest Posts For java 8

Lambda expression in Java 8
Introduction to Streams in Java 8: Creating Streams from Values, Arrays and Collections
Default Methods in Interface: Multiple Inheritance and the Diamond Problem in Java
Java 8 Date and Time API: A Beginner’s Guide to java.time
Java Optional: An Introduction and Why It Exists
Introduction to the Collectors class
Static Methods in Interface: A Practical Guide for Java Developers
LocalDate vs LocalDateTime in Java: Clear Guide with Examples
Filtering in Streams
Custom Functional Interface in Java: @FunctionalInterface Explained
Java 8 Stream collect to List, Set, and Map: toList, toSet, and toMap
Period vs Duration in Java: The Difference, With Examples
Summing method in Collectors API
mapping in Java 8 streams
ZonedDateTime in Java: Time Zones Made Simple with Examples
Predefined Functional interfaces
DateTimeFormatter in Java: Format and Parse Dates Easily
flatmap in Java 8 streams
Java 8 Summarizing Methods with Examples
Predefined Functional interfaces with 2 input arguments
joining and counting collectors in Java 8
Instant in Java: Epoch Time and Timestamps Made Simple
Convert Date to LocalDate in Java: A Complete Guide
Finding and Matching in Java 8
Sorting Streams in Java 8 – sorted, Comparator.comparing, thenComparing, reversed
Function Composition in Java 8: andThen, compose, and Predicate Chaining
Partitioning in Java 8
Reduce Method in Java 8 Streams – identity, accumulator and combiner
Grouping in Java 8
Method reference in Java 8
Java 8 custom collectors: mapping(), collectingAndThen() & Collector.of
ForkJoinPool in Java
Parallel stream in Java 8
Passing code as a parameter in Java 8

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About Us

JavaHandsOn is a learning website. Here I will share knowledge related to Java and its frameworks like Spring, Hibernate, Spring Boot, etc. We will learn every topic using some basic examples. I hope you get in-depth knowledge of Java here and be a proficient developer.

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