Black BookBlac TM Learn Java 8 In a Week A Beginner’s Guide to Java Programming Mahavir DS Rathore Books by Mahavir DS Rathore 1. Java 8 Exception Handling 2. Java 8 Exception Handling Quiz Copyright TM Learn Java 8 in a Week is by Mahavir DS Rathore. While every precaution has been taken in the preparation of this book the author assume No responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. About the author I have been programming and teaching Java for last 18 years. This book is an effort to document my knowledge to share with everyone across the world. I am available to do training on Java anywhere in the world. My email id is Table of Content Sl.No Chapter HyperLink 1 What is Java? Go 2 JDK and JRE Go 3 Setting Path Go Variable 4 Complier and Go Interpreter 5 The First Program Go 6 The HelloWorld Go Program 7 Anatomy of Go HelloWorld Program 8 Multiple Main Go Methods 9 Public Class and Go File Name 10 Runtime Go Execution 11 Alternate Go HelloWorld Program 12 Numeric Data Go Types 13 Non Numeric Go Data Types 14 Literal and Go Constant 15 Escape Sequence Go 16 Immutable String Go 17 StringBuilder Go Class 18 Wrapper Classes Go 19 If… Else Go 20 Switch… Case Go 21 For… Loop Go 22 While… Loop Go 23 Break and Go Continue 24 Conversion and Go Casting 25 Arithmetic and Go Relational Operators 26 Logical and Go Ternary Operators 27 Arrays Go 28 Jagged Array Go 29 For Each Loop Go Chapter 1 What is Java? Topics Introduction Java as Software Platform Java as Programming Language Languages That Influenced Java Languages Influenced by Java Summary Introduction The current (Latest) version of Java is 8. Java can be classified and defined into two categories. 1. Software Platform. 2. Programming Language. Java as Software Platform Java platform is a collection of software components which allow development and execution of bytecode based languages. Bytecode is binary code that Java platform interpret. The Java platform is composed of 1. Compiler – It generate bytecode from source code 2. Java Virtual Machine – It provide runtime execution environment for bytecode. 3. Libraries – It contain Java API. 4. Tools – Various Java Tools. The Java bytecode has two important characteristics 1. It is processor independent i.e. the program can run on any processor architecture. 2. It is Operating System independent i.e. bytecode does not target any Operating System such as Windows or Linux. The Java platform is available in four flavors based upon device type. 1. Java Card – It is used in smart cards and small memory devices. 2. Java ME (Micro Edition) – It is used in Personnel Digital Assistants, Setup Box and printers application. 3. Java SE (Standard Edition) – It is used in development of desktop, communication and User Interface based applications. 4. Java EE (Enterprise Edition) – It is used in development of web based, messaging, distributed and enterprise applications. The Java Platform has support for many languages such as 1. Java 2. Jython 3. Jruby 4. Scala 5. Groovy 6. Rakudo Perl 6 7. Kotlin Java as Programming Language Java is multi paradigm programming language. It is one of the most used programming language for development of various types of software such as desktop, enterprise, web based and mobile applications. Some of important attributes of Java Language are 1. Statically typed – The type of the variable is known at compile time. 2. Object oriented – Object centered programming. 3. Concurrent – Support for multithreading programming. 4. Reflective – Allows inspection of class, method, interface, fields. Languages That Influenced Java Java language falls in ‘C’ family of language category. It has taken inspiration from many languages including languages which were released after Java. Some of the major languages that have influenced Java are: 1. C++ 2. Oberon 3. Ada 83 4. C# 5. Object Pascal Languages Influenced by Java As per tiobe index Java is the No.1 Programming language today. Java has influenced many Modern languages such as: 1. C# 2. Clojure 3. Python 4. JavaScript 5. PHP 6. Scala 7. Groovy Summary Java is a programming language and a platform. Java platform is divided into 4 parts – SE, ME, EE and Card. Java is multi-paradigm programming language. Chapter 2 Java Development Kit and Java Runtime Engine Topics Introduction Java Runtime Engine Java Development Kit Installing JDK Installing Notepad++ Summary Introduction The minimum environment required for a java program to run is called JRE (Java Runtime Engine). JDK is the minimum environment required for development of Java Applications. Java Runtime Engine (JRE) It is an environment that is required for executing a java application. A very popular usage of JRE is with a browser where it is available as a plugin to allow applet (client side program) to execute. JRE is composed of following components: 1. Interpreter: It understand binary java code (e.g.: java.exe). 2. Tools: They provide various functionality such as security, core services, internationalization, RMI etc. (e.g.: keytool, rmiregistry, javacpl etc) c. Library: Java Application Programming Interface (rt.jar, jce.jar, jsse.jar etc.) JRE cannot be used for development of Java application but it is used for executing them. Java Development Kit (JDK) It is an environment that is targeted for developers who desire to develop Java applications. JDK is nothing but Java Standard Edition which is used for development of desktop, user interface, communication and applet types of applications. JDK is composed of following components: 1. Compiler: It is used to compile java code to bytecode (e.g Javac.exe).