Be Expert in Java E-Book

Ummed Singh

• Herausgeber: BookRix
• Kategorie: Wissenschaft und neue Technologien
• Sprache: Englisch

Veröffentlichungsjahr: 2023

Beschreibung

Java serves as both a programming language and a platform. It is a sophisticated, secure, and object-oriented programming language. Sun Microsystems (now a subsidiary of Oracle) developed Java in 1995, and its conception is credited to James Gosling, often referred to as the father of Java. Originally named Oak, the language underwent a name change to Java when it was discovered that the name Oak was already claimed by another company. Regarding its platform designation, Java qualifies as such because it can operate within various hardware or software environments. This is due to its inclusion of a runtime environment (JRE) and API, which enables it to function as a self-sustained platform for running applications.

Please read this carefully and hopefully you will find it helpful. This book has been written with advise of multiple experts who have command over JAVA programming. They have couple of years experiance in JAVA. Please reach out to email [email protected] for any suggestion, query or questions. Thank you.

Leseprobe

Ummed Singh

Be Expert in Java

Learn Java programming and become expert

BookRix GmbH & Co. KG81371 Munich

Table of Content

Java ProgrammingApplication used in JavaNumber of Java ApplicationsNumber of Java platformsJava FeaturesProgram first java codeCompile timeRuntimeEstablish Path in javaJDK vs JRE vs JVMJava Virtual Machine (JVM) ArchitectureVariables in JavaJava data typesWhat is Unicode System?Java operatorsKeywords used in JAVA

This eBook is based on JAVA Programming that has been collected from different sources and people. For more information about this ebook. Kindly write to [email protected]. I will happy to help you.

Copyright 2023 by Ummed Singh

This eBook is a first guide and serves. In addition, please get expert advice or you can write to [email protected] for any query, we will be happy to help you. This book has been written on the advice of many experts and sources who have good command over Java programming. They are listed at the end of this book.All images used in this book are taken from the LAB which is created by experts. All rights reserved, including the right to reproduce this book or portions thereof in any form whatsoever. For any query reach out to the author through email.

Java Programming

Java serves as both a programming language and a platform. It is a sophisticated, secure, and object-oriented programming language. Sun Microsystems (now a subsidiary of Oracle) developed Java in 1995, and its conception is credited to James Gosling, often referred to as the father of Java. Originally named Oak, the language underwent a name change to Java when it was discovered that the name Oak was already claimed by another company. Regarding its platform designation, Java qualifies as such because it can operate within various hardware or software environments. This is due to its inclusion of a runtime environment (JRE) and API, which enables it to function as a self-sustained platform for running applications.

In Java, the "main" method serves as the entry point of the program and is executed when the program runs.

Here's a brief explanation of the code:

class Simple {

public static void main(String args[]) {

System.out.println("Hello Java");

}

}

class Simple: This line begins the definition of the class named "Simple."

public static void main(String args[]): This line defines the main method, which is declared as "public," meaning it can be accessed from outside the class. The keyword "static" indicates that this method belongs to the class itself, rather than to an instance of the class. The "void" keyword means that the method does not return any value. The parameter String args[] is an array of strings and is used to pass command-line arguments to the program. However, in this example, we are not utilizing the command-line arguments.

System.out.println("Hello Java");: This line prints the string "Hello Java" to the standard output (usually the console). The System.out.println method is used to display text on the screen, and in this case, it will print "Hello Java" followed by a newline.

When this Java program is executed, it will simply display "Hello Java" as the output. This is a common introductory example used in Java to demonstrate the basic structure of a Java program and how to print text to the console.