Java - Environment Setup

 

      Java - Environment Setup

         Try it Option Online

            You really do not need to set up your own environment to start learning Java                           programming language. Reason is very simple, we already have Java Programming               environment setup online, so that you can compile and execute all the available                     examples online at the same time when you are doing your theory work. This gives               you confidence in what you are reading and to check  the result with different                         options. Feel free to modify any example and execute it online.

          Try the following example using Try it option available at the top right corner of the            following sample code box:

public class MyFirstJavaProgram {             public static void main(String []args)                           { System.out.println("Hello World"); } }

                                                                                                                                     Local Environment Setup

        If you are still willing to set up your environment for Java programming language,                then this section guides you on how to download and set up Java on your machine.                Following are the steps to set up the environment.

       Java SE is freely available from the link Download Java. You can download a version           based on your operating system.

       Follow the instructions to download Java and run the .exe to install Java on your                   machine. Once you installed Java on your machine, you will need to set environment             variables to point to correct installation directories:

      Setting Up the Path for Windows

       Assuming you have installed Java in c:\Program Files\java\jdk directory:

           · Right-click on 'My Computer' and select 'Properties'.

          · Click the 'Environment variables' button under the 'Advanced' tab.

          · Now, alter the 'Path' variable so that it also contains the path to the Java executable.             Example, if the path is currently set to 'C:\WINDOWS\SYSTEM32', then change                 your path to read 'C:\WINDOWS\SYSTEM32;c:\Program Files\java\jdk\bin'.

       Setting Up the Path for Linux, UNIX, Solaris, FreeBSD

           Environment variable PATH should be set to point to where the Java binaries have been                           installed. Refer to your shell documentation, if you have trouble doing this.

           Example, if you use bash as your shell, then you would add the following line to the end of your            '.bashrc: export PATH=/path/to/java:$PATH'

      Popular Java Editors

        To write your Java programs, you will need a text editor. There are even more sophisticated IDEs            available in the market. However, for now, you can consider one of the following:

          · Notepad: On Windows machine, you can use any simple text editor like Notepad                                    (Recommended for this tutorial), TextPad.

         · Netbeans: A Java IDE that is open-source and free, which can be downloaded from                                  http://www.netbeans.org/index.html.

        · Eclipse: A Java IDE developed by the eclipse open-source community and can be downloaded               from  http://www.eclipse.org/.