Showing posts with label JDK 8. Show all posts

Friday, 6 May 2022

How to Update Server Software Packages and Install JDK or Java in AWS EC2 Instance?

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Overview

Setting up a new Amazon EC2 instance often requires two immediate steps: ensuring all system software is up to date and installing the Java Development Kit (JDK). In this tutorial, we will use the YUM package manager to update our Linux environment and install Java 8.

Step 1: Connect to Your EC2 Instance

Before running commands, you must connect to your instance. Use your terminal or a tool like PuTTY with your public IPv4 address and your private key (.pem file).

Step 2: Update Software Packages

It is crucial to start with the latest security and software patches. Run the following command to update your system:

sudo yum update

If your system is already up to date, the terminal will let you know. If not, press 'y' when prompted to proceed with the updates.

Step 3: Check for Existing Java Installation

To see if Java is already installed, run:

java -version

If you see a message saying "command not found," you are ready to install a new version.

Step 4: Search and Install Java (JDK 8)

First, list the available Java packages in the repository:

yum list java*

Once you see java-1.8.0 in the list, install it using:

sudo yum install java-1.8.0

Step 5: Verify the Installation

After the process completes, verify that Java is correctly configured:

java -version

You should now see output similar to openjdk version "1.8.0_xxx".

Conclusion

Your EC2 instance is now updated and equipped with Java 8. This provides a solid foundation for running Java applications or setting up a web server. Happy coding!

Thursday, 18 June 2015

Java Tutorial : JDK8 Installation (Linux Operating System)

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Step-by-Step: Installing JDK 8 on Linux

Linux is the preferred operating system for many developers due to its stability and performance. If you're building enterprise Java applications, having JDK 8 correctly installed is essential. This beginner-friendly guide will get you up and running in minutes.

Step 1: Download the JDK Package

First, visit the official Oracle website or use your Linux terminal to download the JDK 8 tarball. Make sure you select the correct version for your system architecture (usually x64 for modern machines).

Step 2: Extract the Files

Once downloaded, navigate to your download directory in the terminal. Use the tar -xvf command to extract the contents. It's a good practice to move these files to a central location like /usr/lib/jvm/.

Step 3: Update System Alternatives

Linux uses a system called "alternatives" to manage different versions of software. Use the update-alternatives command to tell your system where the new Java and Javac executables are located.

Step 4: Configure Environment Variables

To ensure applications can find Java, you need to set the JAVA_HOME variable. Edit your .bashrc or /etc/profile file and add the path to your JDK installation. This makes Java available every time you open a terminal.

Step 5: Verify the Setup

Finally, type java -version and javac -version in your terminal. If you see "1.8" in the output, congratulations! You are ready to start coding in Java on Linux.

Check Out These Related Tutorials:

Click here to watch in Youtube :
https://www.youtube.com/watch?v=ioUEU3MoxX0&list=UUhwKlOVR041tngjerWxVccw

To Download JDK click here:
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
http://docs.oracle.com/javase/8/docs/technotes/guides/install/linux_jdk.html

Click the below Image to Enlarge

Java Tutorial : JDK8 Installation (Linux Operating System)

Linux Commands:

#Which java

#java –version

#rpm -ivh jdk-8u45-linux-x64.rpm

#rpm

Set Path:

JAVA_HOME=/usr/java/jdk1.8.0_45
PATH=$JAVA_HOME/bin:$PATH

To Download HelloWorld_JDK_Install Project Click the below link:
https://sites.google.com/site/javaee4321/jdbc/HelloWorld_JDK_Install.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

All JAVA EE Links

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Saturday, 16 May 2015

Java : JDK8 Installation (Windows operating system)

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Complete Guide: Installing JDK 8 on Windows

JDK 8 remains one of the most popular and stable versions of Java used in the industry today. Whether you are a student or a professional developer, setting up your environment correctly is the crucial first step. This guide will walk you through the process in the simplest way possible.

Step 1: Download the JDK 8 Installer

Visit the official Oracle website and navigate to the Java SE 8 downloads section. You'll need to accept the license agreement and select the "Windows x64" version if you are on a 64-bit system. Once the download is finished, you're ready to start!

Step 2: Run the Setup Wizard

Double-click the downloaded .exe file. The installation wizard will guide you through the process. Most users can simply click "Next" through the prompts, keeping the default installation path, which is usually C:\Program Files\Java\jdk1.8.x.

Step 3: Setting Up Environment Variables

This is the most important part! To make Java work in your command line:

Go to System Properties and click on Environment Variables.
Create a new System Variable named JAVA_HOME and point it to your JDK folder.
Find the Path variable and add %JAVA_HOME%\bin to the list.

Step 4: Verify the Installation

Open a new Command Prompt window and type java -version and javac -version. If you see "1.8" in the results, congratulations! You have successfully installed Java on your Windows machine.