Java Programming Language Pdf
What is Java?
Java is a mid-1990s high level, object-oriented programming language introduced by Sun Microsystems (a subsidiary of Oracle) for hardware devices. It includes an architecture that embodies the write once, run anywhere feature; that is, any code written in Java can be executed on any device with a Java Virtual Machine (JVM), thus making it cross-platform.
Key Features of Java
Such level of interest that its command capabilities makes such language worth including in the palette of developers is owed to other desirable features of Java:
Platform Independence: Upon compilation, Java programs are transformed into ‘bytecode’ that runs on any computer owning a JVM instead of the particular hardware or OS.
Object Oriented: Because Java is object-oriented, it promotes more organized, reusable and extensible coding, thereby easing the challenge of developing sophisticated software systems.
Robust and Secure: Java comes equipped with internal security policies and sophisticated error processing features that help to eliminate runtime errors and exposure to security threats.
Rich Standard Library: Java contains lots of libraries with Code already written to solve many common problems like Data Structures, Networking applications, GUI, etc.
Why Should You Start Studying Java?
Java is a wonderful language for both the sudden Western sign-up and the advanced programming experts. And here are several reasons why it is wise to try to learn java programming:
The Skill Has A High Employer Demand: Java is a hot commodity, and good knowledge of it opens a lot of doors in jobs such as software development, web development, and mobile applications development.
Cross-industry: Many industries such as banking, health, e-commerce, and gaming verticals make sure that Java programming is an all-encompassing skill set for developers.
Active Community: Learning Java is also made easier due to a vast number of Java developers, an abundance of documents and manuals, and numerous tutorials. If you need help, it’s easy to get it.
Perfect For Creating Applications on an Enterprise Level: In today’s business world where enterprise-scale applications are important, the reliability, availability, and security of Java are well suited for such applications.
How to Write a Simple Java Program
For our first activity in Java, let us write a very simple Java application. This is an implementation of the common Java application, “Hello, World!” program:
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}
How to Convert the Written Java Code into its PDF Format
After preparing your Java program, the next thing you need to do is to convert the created ‘program’ into PDF format. Here are some ways you can do:
- Export from the IDE: Some Built-in Development Environments (IDEs) like Microsoft Visual Studio or Eclipse SDK have options for exporting code to the PDF file.
- Copy and Paste to Word Document: You may copy the code into a word document, apply some styling and save it as a pdf.
- Online Tools: Tools like Code Beautify, PDFcrowd, etc. can be used to perform the same function virtually.
- Keeping Codes Format Measuring Constraints when Formatting Java Code-codes into a PDF Document
- When converting your Java Code into a pdf document here are some suggestions that you might consider.
- Annotation: Different colours shall be used to differentiate different entities, Such as – Keys, variables comments etc.
- Indentation: For indentation, it is advisable to use standard rules or a few rules.
Writing Down the variable: use annotations within the program/application to help the viewers understand how the program/application is made up in terms of control flow and logical reasoning.
Download Our Sample Java Program PDF:
Conclusion
It is not uncommon, especially in the academic or industrial context, to annex Java code snippets in the form of PDFs. To wrap it up, it is very easy to key in the Java programming code you have chosen to write, convert it to a file, and go ahead and post it for the audience to see. PDF is beneficial in making programs more readable, preserving the original format of the code, and making it easier to share the program.
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