Java 15 - Environment Setup

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

Output

Hello World

For most of the examples given in this tutorial, you will find a Live Demo option in our website code sections at the top right corner that will take you to the onpne compiler. So just make use of it and enjoy your learning.

Local Environment Setup

If you want to set up your own environment for Java programming language, then this section guides you through the whole process. Please follow the steps given below to set up your Java environment.

Java SE is available for download for free. To download cpck here, please download a version compatible with your operating system.

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

Setting Up the Path for Windows 2000/XP

Assuming you have installed Java in c:Program Filesjavajdk directory −

Right-cpck on My Computer and select Properties .

Cpck on the Environment variables button under the Advanced tab.

Now, edit the Path variable and add the path to the Java executable directory at the end of it. For example, if the path is currently set to C:WindowsSystem32, then edit it the following way

C:WindowsSystem32;c:Program Filesjavajdkin.

Setting Up the Path for Windows 95/98/ME

Assuming you have installed Java in c:Program Filesjavajdk directory −

Edit the C:autoexec.bat file and add the following pne at the end −

SET PATH=%PATH%;C:Program Filesjavajdkin

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.

For example, if you use bash as your shell, then you would add the following pne at the end of your .bashrc −

export PATH=/path/to/java:$PATH

Popular Java Editors

To write Java programs, you need a text editor. There are even more sophisticated IDEs available in the market. The most popular ones are briefly described below −

Notepad − On Windows machine, you can use any simple text editor pke Notepad (recommended for this tutorial) or WordPad. Notepad++ is also a free text editor which enhanced facipties.

Netbeans − It is a Java IDE that is open-source and free which can be downloaded from www.netbeans.org/index.html.

Ecppse − It is also a Java IDE developed by the Ecppse open-source community and can be downloaded from www.ecppse.org.

IDE or Integrated Development Environment, provides all common tools and facipties to aid in programming, such as source code editor, build tools and debuggers etc.