How to Become a Java Programmer

Java is one of the most widely used programming languages. It is a concurrent, object-oriented, class-based and general-purpose computer programming language. If you want to pursue your career as a Java programmer, you require a ‘compiler’ (a programme which is used to convert the Java source code into bytecode).

In the past, the only way to become a Java programmer was to learn the Sun’s Java Development Kit. However, now there are many ways to begin your career as a Java programmer which mainly include ‘gcj’ of GNU project, open source contribution of IBM. In addition, you need to have ‘Java virtual machine’ which recognizes the bytecodes and convert them into the language of the machine on the aimed processor.

Instructions

  • 1

    First of all, you have to download the Java SE package for your operating system. Go to the Oracle's Java SE download page. You will see the names of all the major operating systems (Windows, Macintosh, Linux and Solaris). Click the download link and save the file. Then, locate the file in your computer and run it. Follow the instructions and install the programme on your computer. It will be better for you to install the latest edition. However, if you cannot find the new edition, you can download the old one. Furthermore, you can also use an open source or a third-party compiler e.g. ‘gcj’ or ‘jikes’.

  • 2

    It is extremely important for you to learn the basics of programming language. You may learn a little bit in your computer courses in high school. But, it is necessary for you to practice the codes at your home as much as you can. In this way, you will be able to become a good programmer. Besides, it will help you in using the software more efficiently.

  • 3

    You can use Notepad, emacs or vi as ‘clean’ editor. You cannot use any programme application like Microsoft Word as you can only save codes in plain text.

  • 4

    You also have to learn the fundamental edit-compile-test cycle which has three steps. First, creation or editing the source file or files of the programme. Second, to compile to ‘.class’ files and third is to run the programme with the file which is executable with Java.

  • 5

    Compile your codes and run ‘Hello World’ application. You can find the solutions of your problems on the search engines like Google and Yahoo.

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