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Introduction to Java 8

Before entering the how to install Java 8 part, we would first have a general overview of Java 8.

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Version detail – Java SE 8(LTS)

Release date – March 2014

Support till – March 2023

Latest Version – Java SE 12

Always there is an Alpha release for the new addition in front of developers before the application goes for the beta release (to the community). By doing this, they get adequate responses regarding any issue and how to fix them. A kind of testing and certification process before it goes to the open community.

How to Install Java 8?

There are several OS on which JAVA 8 support to work:

Windows

Mac

Linux

Solaris

Here we will see how to install Java 8 on Windows.

JDK – Java development kit.

JRE – Java runtime.

The official name of JDK is Java Platform Standard Edition of Java SE; this is a mandatory platform for writing any Java program. This JDK is available free from an ample number of websites (but I prefer the sun microsystem website).

The mother site of JDK is Oracle.

So, on the last thing, before we work on the installation part:

JRE is used to run the Java programs, whereas JDK, which has a combination of JRE plus other development tool kit, is used for writing and also to run the Java programs. One can say JRE is a subset of JDK. A user needs to have both for the proper working of the Java platform. To Install Java 8, we need Java SE 8.

Steps to Install Java 8 on Windows

Given below are the steps required to install Java 8:

Step 1: Just check in your system if there is a previous version available by default; if yes, then uninstall it to start with a fresh new version – Java 8.

Step 2: Type “Java SE”, which will lead you to the main site of Oracle. A user will get several links to download (prefer the official website).

It looks something like this:

Note: On the screen, we can see SE 11 (the latest version is available), but if you scroll down on this page, you will get SE8 links as well. See, the installation process is not bound to version; it is almost the same procedure for any version.

Note: The download button with a red rectangle is your gateway to start the download process.

Step 5: We will go with Windows. Exe file, you have to accept the license agreement radio button before the process starts; otherwise, an error message will appear.

Some screens before the actual download happen.

Step 6: Once the download is complete, you will get the below screen to initiate the installation of the software. This screen is called an “Installation kit for JE’”. This is a welcome screen where a user has to press the ‘Next button and move to later stages in the download process.

Step 7: This screen depicts some useful action that has to be taken by the user. It holds some crucial information lets see the screen, and then we will continue with the discussion.

Step 8: Once this is done, you have to perform 1-2 steps in the installation process until you get this screen. You have to stop your work as the installation is complete.

Step 9: With this, you are left with some minor but important settings adjustments. The environment setup, which has path details and classpath details, are even crucial to fix.

The path variable gives the address or the location of the javac, java file. The Classpath variable gives the address of the library files.

In the Environment variable screen, you have to press the ‘New’ button, which will take you to the next screen.

Here a user has to define ‘New System Variable’; you have to mention the pathname and then Copy the path of the bin folder, which is installed in the JDK folder.

A user has to type ‘Javac’ in the command window to conform – refer to the below screen.

Features

Now since you have successfully done with the installation process, let’s see what Java can help you with.

Java 8 enables its users with the following benefits:

Lambda expressions

Method references

Functional interfaces

Stream API

Default methods

Base64 encode decode

Static methods in the interface

Optional class

Collectors class

ForEach() method

Parallel array sorting

Nashorn JavaScript engine

Type and repeating annotations

IO enhancements

Concurrency enhancements

JDBC enhancements