Introduction to Java

Java is a high-level, object-oriented programming language that was developed by Sun Microsystems and released in 1995. It is widely used for building enterprise-level applications, Android apps, and web applications.

Features of Java

• Simple: The syntax of Java is similar to C++, making it easy to learn for developers who are familiar with C++ or C.
• Object-Oriented: Java follows the object-oriented programming paradigm, which means that everything in Java is an object and can be represented as a class.
• Platform Independent: Java programs can run on any operating system that has a Java Virtual Machine (JVM), making it platform-independent.
• Secure: Java has built-in security features that protect against viruses, tampering, and unauthorized data access.
• Robust: Java has features like garbage collection, exception handling, and strong memory management, which make it a robust programming language.
• Multithreaded: Java supports multithreading, allowing multiple tasks to run concurrently within a program.

Hello World Program

A common starting point for learning a programming language is to write a simple program that prints 'Hello, World!'. Here's how you can write a Hello World program in Java:

1// Java Hello World Program
2public class HelloWorld {
3
4    public static void main(String[] args) {
5        System.out.println("Hello, World!");
6    }
7
8}

When you run this program, it will output the text 'Hello, World!' to the console.

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// Java Hello World Program

public class HelloWorld {

​

    public static void main(String[] args) {

        System.out.println("Hello, World!");

    }

​

}