Introduction to Java
What is Java?
Java is a general-purpose, object-oriented programming language that is designed to be portable, secure, and reliable. It was created by Sun Microsystems in 1995 and is now owned by Oracle. Java is one of the most popular programming languages in the world, with billions of devices running Java code.
Why is Java so popular?
There are many reasons why Java is so popular, including:
Portability: Java code can run on any platform that has a Java Virtual Machine (JVM). This makes Java a great choice for developing applications that need to run on a variety of devices.
Security: Java is a very secure language, with built-in features that help to prevent security vulnerabilities.
Object-oriented: Java is an object-oriented language, which makes it easier to develop modular and reusable code.
Large community: Java has a large and active community of developers, which means that there are many resources available to help you learn Java and troubleshoot problems.
What can you do with Java?
Java can be used to develop a wide variety of applications, including:
Web applications: Java is a popular choice for developing web applications, including web servers, web services, and web-based applications.
Desktop applications: Java can be used to develop desktop applications, such as productivity applications, games, and scientific applications.
Mobile applications: Java can be used to develop mobile applications for Android and other platforms.
Embedded systems: Java is increasingly being used to develop embedded systems, such as smart devices and wearable devices.
How do I get started with Java?
If you are interested in learning Java, there are many resources available to help you get started. Here are a few:
The Java Tutorial: The Java Tutorial is a great resource for learning the basics of Java. It is available online from Oracle.
Java MOOCs: There are many free and paid MOOCs (massive open online courses) available that teach Java. Some popular options include the Java Programming Masterclass from Udemy and the Introduction to Java Programming from Coursera.
Java books: There are many great books available that teach Java. Some popular options include Head First Java and Effective Java.