How to develop java ....

Java is one of the most popular programming languages in the world. It is widely-used to develop IOT appliances, Android apps, web, and enterprise applications. This article will provide a quick guide to install and configure your workstation using .

Installing the compiler and tools:

Installing the compiler, or Java Development Kit (JDK), is easy to do in Fedora. At the time of this article, versions 8 and 9 are available. Simply open a terminal and enter:

sudo dnf install java-1.8.0-openjdk-delve

This will install the JDK for version 8. For version 9, enter:

sudo dnf install java-9-openjdk-delve

For the developer who requires additional tools and libraries such as Ant and Maven, the Java Development group is available. To install the suite, enter:

sudo dnf group install "Java Development"

To verify the compiler is installed, run:

java c -version

The output shows the compiler version and looks like this:

javac 1.8.0_162

Compiling applications:

You can use any basic text editor such as nano, vim, or gedit to write applications. This example provides a simple “Hello Fedora” program.

Open your favorite text editor and enter the following:

public class HelloFedora {


      public static void main (String[] args) {
              System.out.println("Hello Fedora!");
      }
}

Save the file as HelloFedora.java. In the terminal change to the directory containing the file and do:

java c HelloFedora.java

The compiler will complain if it runs into any syntax errors. Otherwise it will simply display the shell prompt beneath.

You should now have a file called HelloFedora, which is the compiled program. Run it with the following command:

java HelloFedora

And the output will display:

Hello Fedora!

Installing an Integrated Development Environment (IDE):

Some programs may be more complex and an IDE can make things flow smoothly. There are quite a few IDEs available for Java programmers including:

• Geany, a basic IDE that loads quickly, and provides built-in templates
• Anjuta
• GNOME Builder, which has been covered in the article Builder – a new IDE specifically for GNOME app developers

However, one of the most popular open-source IDE’s, mainly written in Java, is Eclipse. Eclipse is available in the official repositories. To install it, run this command:

sudo dnf install eclipse-jdt

When the installation is complete, a shortcut for Eclipse appears in the desktop menu.

For more information on how to use Eclipse, consult the User Guide available on their website.

Browser plugin :

If you’re developing web applets and need a plugin for your browser, IcedTea-Webis available. Like Open JDK, it is open source and easy to install in Fedora. Run this command:

sudo dnf install iced tea-web