As explained earlier, Java is a multi-platform language. This means that it can be written for one OS and run on another. How is this possible?
Java code is first written in the Java SDK, which is available for Windows, Linux, and macOS. Programmers write in Java, which the kit translates into computer code that can be read by any device with the appropriate software. This is accomplished by using software called a compiler. The compiler takes high-level computer code such as Java and translates it into a language that operating systems understand, called byte code.
The bytecode is then processed by an interpreter called a Java Virtual Machine (JVM). JVMs are available for most software and hardware platforms, and this is what makes it possible to port Java code from one device to another. To run a Java JVM, the Java JVM loads the code, checks it, and provides a runtime environment.
Given Java’s high portability, it’s not surprising that many people want to learn how to write in it. Fortunately, there are many resources available to get you started learning Java.
Java Programming Information
So, what does Java mean for beginning programmers? In terms of a worthwhile investment to learn: a lot. Despite being around for over 20 years, it remains one of the best languages because:
- Java is extremely versatile, used in many different industries and operating systems, and the Android operating system is based on it.
- Java is easy to learn, and it is considered a great first language for learning the basics of programming.
- You can easily find Java tutorials, training courses, and online communities to get you started quickly and receive ongoing support as you gain experience programming in Java.
It can be helpful to divide learning Java into two phases: first, learning how to program in Java, and second, learning how to use the language in different development environments. This is important because even Java experts need to learn how to use the Java tools and environments they are familiar with in different places.
