A guick intro to Java programming language
Java is a powerful general-purpose programming language. It is used to develop desktop and mobile applications, big data processing, embedded systems, and so on. According to Oracle, the company that owns Java, Java runs on 3 billion devices worldwide, which makes Java one of the most popular programming languages.
To get started with Java programming, visit Java Tutorials.
Java was built with the philosophy of “write once, run anywhere” (WORA). The Java code you write on one platform (operating system) will run on other platforms with no modification.
The object-oriented approach is one of the popular programming styles. In object-oriented programming, a complex problem is divided into smaller sets by creating objects. This makes Java code reusable, has design benefits and makes code easier to maintain.
The earlier version of Java was criticized for being slow. However, the new version of Java is one of the fastest programming languages.
A well-optimized Java code is nearly as fast as lower-level languages like C/C++ and much faster than Python, PHP, etc.
Robust simply means strong. Java is robust because:
It uses strong memory management.
Some of the high-level features for security that Java handles are:
One of the reasons why Java is widely used is because of the availability of a huge standard library. The Java environment has hundreds of classes and methods under different packages to help software developers like us. For example,
java.lang
- for advanced features of strings, arrays, etcjava.util
- for data structures, regular expressions, date and time functions, etcjava.io
- for file i/o, exception handling, etcAccording to Oracle, the company that owns Java, Java runs on 3 billion devices worldwide, which makes Java one of the most popular programming languages.
Java programming language using Android SDK (Software Development Kit) is usually used for developing Android apps.
Java is used to create Web applications through Servlets, Struts or JSPs. Some of the popular web applications written in Java are Google.com, Facebook.com, eBay.com, LinkedIn.com, etc.
You can use the popular software framework like Hadoop (which is written in Java) to process Big Data.
Oracle’s Java Embedded technologies provide platform and runtime for billions of embedded devices like televisions, SIM cards, Blu-ray Disc players, etc.
Besides these applications, Java is also used for game development, scientific applications (like natural language processing), and many others.
It is always a good idea to learn to program from books. You will get the big picture of programming concepts in the book which you may not find elsewhere.
Here are some books we personally recommend.
Oracle, the company that owns Java, provides quality Java documentation. The official documentation is continuously updated. However, it may not be the easiest of tutorials to follow for beginners.
You must be eager to learn Java by now. However, here are some tips and best practices to follow before you learn Java.