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This Java Tutorial is designed for beginners as well as experienced professionals. Whether you’re looking to learn the basics of Java or its advanced concepts, this free Java tutorial is the perfect resource for you.

Java Tutorial

Java Tutorial

Overview of Java

Introduction to Java The Complete History of Java Programming Language C++ vs Java vs Python How to Download and Install Java for 64 bit machine? Setting up the environment in Java How to Download and Install Eclipse on Windows? JDK in Java How JVM Works - JVM Architecture? Differences between JDK, JRE and JVM Just In Time Compiler Difference between JIT and JVM in Java Difference between Byte Code and Machine Code How is Java platform independent?

Basics of Java

Java Basic Syntax Java Hello World Program Java Data Types Primitive data type vs. Object data type in Java with Examples Java Identifiers Operators in Java Java Variables Scope of Variables In Java Wrapper Classes in Java

Input/Output in Java

How to Take Input From User in Java? Scanner Class in Java Java.io.BufferedReader Class in Java Difference Between Scanner and BufferedReader Class in Java Ways to read input from console in Java System.out.println in Java Difference between print() and println() in Java Formatted Output in Java using printf() Fast I/O in Java in Competitive Programming

Flow Control in Java

Decision Making in Java (if, if-else, switch, break, continue, jump) Java if statement with Examples Java if-else Java if-else-if ladder with Examples Loops in Java For Loop in Java Java while loop with Examples Java do-while loop with Examples For-each loop in Java Continue Statement in Java Break statement in Java Usage of Break keyword in Java return keyword in Java

Operators in Java

Java Arithmetic Operators with Examples Java Unary Operator with Examples Java Assignment Operators with Examples Java Relational Operators with Examples Java Logical Operators with Examples Java Ternary Operator with Examples Bitwise Operators in Java

Strings in Java

Strings in Java String class in Java Java.lang.String class in Java | Set 2 Why Java Strings are Immutable? StringBuffer class in Java StringBuilder Class in Java with Examples String vs StringBuilder vs StringBuffer in Java StringTokenizer Class in Java StringTokenizer Methods in Java with Examples | Set 2 StringJoiner Class in Java

Arrays in Java

Arrays in Java Arrays class in Java Multidimensional Arrays in Java Different Ways To Declare And Initialize 2-D Array in Java Jagged Array in Java Final Arrays in Java Reflection Array Class in Java util.Arrays vs reflect.Array in Java with Examples

OOPS in Java

Object Oriented Programming (OOPs) Concept in Java Why Java is not a purely Object-Oriented Language? Classes and Objects in Java Naming Conventions in Java Java Methods Access Modifiers in Java Java Constructors Four Main Object Oriented Programming Concepts of Java Inheritance in Java Abstraction in Java Encapsulation in Java Polymorphism in Java Interfaces in Java 'this' reference in Java

Inheritance in Java

Inheritance and Constructors in Java Java and Multiple Inheritance Interfaces and Inheritance in Java Association, Composition and Aggregation in Java Comparison of Inheritance in C++ and Java

Abstraction in Java

abstract keyword in java Abstract Class in Java Difference between Abstract Class and Interface in Java Control Abstraction in Java with Examples Difference Between Data Hiding and Abstraction in Java

Encapsulation in Java

Difference between Abstraction and Encapsulation in Java with Examples

Polymorphism in Java

Difference between Inheritance and Polymorphism Dynamic Method Dispatch or Runtime Polymorphism in Java Difference between Compile-time and Run-time Polymorphism in Java

Constructors in Java

Copy Constructor in Java Constructor Overloading in Java Constructor Chaining In Java with Examples Private Constructors and Singleton Classes in Java

Methods in Java

Static methods vs Instance methods in Java Abstract Method in Java with Examples Overriding in Java Method Overloading in Java Difference Between Method Overloading and Method Overriding in Java

Interfaces in Java

Differences between Interface and Class in Java Functional Interfaces in Java Nested Interface in Java Marker interface in Java Comparator Interface in Java with Examples

Wrapper Classes in Java

Need of Wrapper Classes in Java Different Ways to Create the Instances of Wrapper Classes in Java Character Class in Java Java.Lang.Byte class in Java Java.Lang.Short class in Java Java.lang.Integer class in Java Java.Lang.Long class in Java Java.Lang.Float class in Java Java.Lang.Double Class in Java Java.lang.Boolean Class in Java Autoboxing and Unboxing in Java Type conversion in Java with Examples

Keywords in Java

Java Keywords Important Keywords in Java Super Keyword in Java final Keyword in Java static Keyword in Java enum in Java transient keyword in Java volatile Keyword in Java final, finally and finalize in Java

Access Modifiers in Java

Public vs Protected vs Package vs Private Access Modifier in Java Access and Non Access Modifiers in Java

Memory Allocation in Java

Java Memory Management How are Java objects stored in memory? Stack vs Heap Memory Allocation How many types of memory areas are allocated by JVM? Garbage Collection in Java Types of JVM Garbage Collectors in Java with implementation details Memory leaks in Java Java Virtual Machine (JVM) Stack Area

Classes of Java

Understanding Classes and Objects in Java Singleton Method Design Pattern in Java Object Class in Java Inner Class in Java Throwable Class in Java with Examples

Packages in Java

Packages In Java How to Create a Package in Java? Java.util Package in Java Java.lang package in Java Java.io Package in Java Java Collection Tutorial

Exception Handling in Java

Exceptions in Java Types of Exception in Java with Examples Checked vs Unchecked Exceptions in Java Java Try Catch Block Flow control in try catch finally in Java throw and throws in Java User-defined Custom Exception in Java Chained Exceptions in Java Null Pointer Exception In Java Exception Handling with Method Overriding in Java

Multithreading in Java

Multithreading in Java Lifecycle and States of a Thread in Java Java Thread Priority in Multithreading Main thread in Java Java.lang.Thread Class in Java Runnable interface in Java Naming a thread and fetching name of current thread in Java What does start() function do in multithreading in Java? Difference between Thread.start() and Thread.run() in Java Thread.sleep() Method in Java With Examples

Synchronization in Java

Synchronization in Java Importance of Thread Synchronization in Java Method and Block Synchronization in Java Lock framework vs Thread synchronization in Java Difference Between Atomic, Volatile and Synchronized in Java Deadlock in Java Multithreading Deadlock Prevention And Avoidance Difference Between Lock and Monitor in Java Concurrency Reentrant Lock in Java

File Handling in Java

Java.io.File Class in Java Java Program to Create a New File Different ways of Reading a text file in Java Java Program to Write into a File Delete a File Using Java File Permissions in Java FileWriter Class in Java Java.io.FileDescriptor in Java Java.io.RandomAccessFile Class Method | Set 1

Java Regex

Regular Expressions in Java Regex Tutorial - How to write Regular Expressions? Matcher pattern() method in Java with Examples Pattern pattern() method in Java with Examples Quantifiers in Java java.lang.Character class methods | Set 1

Java IO

Java IO : Input-output in Java with Examples Java.io.Reader class in Java Java.io.Writer Class in Java Java.io.FileInputStream Class in Java FileOutputStream in Java Java.io.BufferedOutputStream class in Java

Java Networking

Java Networking TCP/IP Model User Datagram Protocol (UDP) Differences between IPv4 and IPv6 Difference between Connection-oriented and Connection-less Services Socket Programming in Java java.net.ServerSocket Class in Java URL Class in Java with Examples

JDBC - Java Database Connectivity

Introduction to JDBC (Java Database Connectivity) JDBC Drivers Establishing JDBC Connection in Java Types of Statements in JDBC JDBC Tutorial Java 8 Features - Complete Tutorial