Java is a general-purpose, concurrent, class-based, object-oriented, high-level programming language and computing platform first released by Sun Microsystems in 1995. It’s related in some ways to C and C++, in particular with regard to its syntax, and borrows a few ideas from other languages. Java applications are compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture.
Java is designed to be simple enough that many programmers can quickly become proficient in the language. It’s one of the most popular programming languages especially for client-server web applications.
Some popularity indexes show that Java holds the top spot with C. The respected TIOBE Index shows Java remains the most popular programming language.
Here’s our recommended tutorials to learn Java. If you’re looking for free Java programming books, check here.
1. Introduction to Computer Science using Java by Bradley Kjell, Central Connecticut State University
Introduction to Computer Science using Java is a first course in Computer Science using the programming language Java. It’s intended for high school AP Computer Science classes, for university level CS-I classes, and for self study.
There are about 20 pages per chapter. If you spend about 3 minutes per page each chapter will take about 60 minutes, or longer if you copy and run some of the programs.
2. The Java Tutorials by Oracle
The Java Tutorials are practical guides for programmers who want to use the Java programming language to create applications. They include hundreds of complete, working examples, and dozens of lessons. Groups of related lessons are organized into “trails”.
3. The Java EE Tutorial by Oracle
The Java EE Tutorial teaches and demonstrates the Java EE features that are used to develop enterprise applications.
This tutorial is intended for programmers interested in developing and deploying Java EE 8 applications. It covers the technologies comprising the Java EE platform and describes how to develop Java EE components and deploy them on the Java EE Software Development Kit (SDK).
4. Learning Modern Java: A Tutorial Using Java 8 by Marty Hall
Learning Modern Java: A Tutorial Using Java 8 is a series of tutorials on Java programming.
All the slides, source code, exercises, and exercise solutions are free for unrestricted use. Although these tutorials do not assume any previous exposure to Java, they do assume that you already know some high-level programming language.
5. Java 8 Tutorial: Lambda Expressions, Streams, and More by Marty Hall
Java 8 Tutorial: Lambda Expressions, Streams, and More is a series of tutorials on the key new features of Java 8. Since each section includes exercises and exercise solutions, this can also be viewed as a self-paced Java 8 training course.
6. Google Java Style Guide by Google
This document serves as the complete definition of Google’s coding standards for source code in the Java Programming Language. A Java source file is described as being in Google Style if and only if it adheres to the rules herein.
Like other programming style guides, the issues covered span not only aesthetic issues of formatting, but other types of conventions or coding standards as well. However, this document focuses primarily on the hard-and-fast rules that we follow universally, and avoids giving advice that isn’t clearly enforceable (whether by human or tool).
7. Java language basics by IBM
The two-part Introduction to Java programming tutorial is meant for software developers who are new to Java technology. Work through both parts to get up and running with object-oriented programming (OOP) and real-world application development using the Java language and platform.
8. Java Video Tutorial by Derek Banas
A good series of videos to learn all about Java.
9. Learn Java in Y minutes
Java is a general-purpose, concurrent, class-based, object-oriented computer programming language.
All tutorials in this series:
|Free Programming Tutorials|
|Java||General-purpose, concurrent, class-based, object-oriented, high-level language|
|C||General-purpose, procedural, portable, high-level language|
|Python||General-purpose, structured, powerful language|
|C++||General-purpose, portable, free-form, multi-paradigm language|
|C#||Combines the power and flexibility of C++ with the simplicity of Visual Basic|
|PHP||PHP has been at the helm of the web for many years|
|Ruby||General purpose, scripting, structured, flexible, fully object-oriented language|
|Assembly||As close to writing machine code without writing in pure hexadecimal|
|Swift||Powerful and intuitive general-purpose programming language|
|Groovy||Powerful, optionally typed and dynamic language|
|Go||Compiled, statically typed programming language|
|Pascal||Imperative and procedural language designed in the late 1960s|
|Perl||High-level, general-purpose, interpreted, scripting, dynamic language|
|R||De facto standard among statisticians and data analysts|
|COBOL||Common Business-Oriented Language|
|Scala||Modern, object-functional, multi-paradigm, Java-based language|
|Fortran||The first high-level language, using the first compiler|
|Scratch||Visual programming language designed for 8-16 year-old children|
|Lua||Designed as an embeddable scripting language|
|Logo||Dialect of Lisp that features interactivity, modularity, extensibility|
|Rust||Ideal for systems, embedded, and other performance critical code|
|Lisp||Unique features - excellent to study programming constructs|
|Ada||ALGOL-like programming language, extended from Pascal and others|
|Haskell||Standardized, general-purpose, polymorphically, statically typed language|
|Scheme||General-purpose, functional, language descended from Lisp and Algol|
|Prolog||General purpose, declarative, logic programming language|
|Forth||Imperative stack-based programming language|
|Clojure||Dialect of the Lisp programming language|
|Julia||High-level, high-performance language for technical computing|
|SQL||Access and manipulate data held in a relational database management system|
|Erlang||General-purpose, concurrent, declarative, functional language|
|VimL||Powerful scripting language of the Vim editor|
|OCaml||General-purpose, powerful, high-level language|
|Awk||Versatile language designed for pattern scanning and processing|
|Racket||Platform for programming language design and implementation|
|BASIC||Family of general-purpose, high-level programming languages|
|LaTeX||Professional document preparation system and document markup language|
|Elixir||Relatively new functional language that runs on the Erlang virtual machine|
|Dart||Client-optimized programming language for fast apps|
|ABAP||Advanced Business Application Programming|
|F#||General purpose, strongly typed, multi-paradigm language. Part of ML|
|Chapel||Parallel-programming language in development at Cray Inc.|
|Dylan||Multi-paradigm language, supports functional & object-oriented programming|
|D||General-purpose systems programming language with a C-like syntax|
|Solidity||Object-oriented, high-level language for implementing smart contracts|
|XML||Set of rules for defining semantic tags that describe the structure and meaning|
|Vala||Object-oriented language with a self-hosting compiler that generates C code|
|ECMAScript||Best known as the language embedded in web browsers|
|Kotlin||Statically typed, general-purpose programming language with type inference|
|Markdown||Plain text formatting syntax designed to be easy-to-read and easy-to-write|
|Pike||Interpreted, general-purpose, high-level, cross-platform, dynamic language|
|HTML||HyperText Markup Language|
|Factor||Dynamic stack-based language|
|Objective-C||General purpose language which is a superset of C|
|Standard ML||One of the two main dialects of the ML language|
|Alice||Educational language with an integrated development environment|
|Agda||Dependently typed functional language based on intuitionistic type theory|
|Icon||High-level, general-purpose language|
|PureScript||Small strongly, statically typed language with expressive types|
|Tcl||Dynamic language based on concepts of Lisp, C, and Unix shells|