Groovy is a dynamic programming language that runs on the Java Virtual Machine (JVM). It is designed to be concise and expressive, with a syntax that is similar to Java but with additional features that make it easier to write code and work with data. Some of its key features include closures, dynamic typing, and the ability to easily integrate with Java libraries. Groovy is often used for scripting, testing, and building web applications.
Groovy is a dynamic and optionally typed programming language that runs on the Java Virtual Machine (JVM).
Features of Groovy :
Groovy supports dynamic typing, which means that you don't have to declare the type of a variable before using it.
Groovy supports closures, which are blocks of code that can be assigned to a variable, passed as an argument to a method or returned as a value from a method.
Groovy has built-in support for creating DSLs, which are small, specialized programming languages that are designed to solve specific problems.
Groovy is designed to be fully compatible with Java, which means that you can use any Java library in your Groovy code.
Groovy has a simplified syntax compared to Java, which makes it easier to write and read code.
Groovy supports both runtime and compile-time meta-programming, which allows you to modify the behavior of your code at runtime or compile-time.
To choose a Region follow the below step:
1. Sign in to the AWS Management Console.
2. Choose a service to go to that service's console.
3. In the navigation bar, choose the name of the currently displayed Region. Then choose the Region to which you want to switch.
Step instructions for how to assess and monitor the health and proper function of the application:
1. Navigate to your Amazon EC2 console and verify that you're in the correct region.
2. Choose Instance and select your launched instance.
3. Select the server to display your metadata page and choose the Status checks tab at the bottom of the page to review if your status checks passed or failed.
To verify the installation, follow the below instructions
Step 1. Connect to SSH:
Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
In the navigation pane, choose Instances.
Select the instance and choose Connect.
Choose SSH Client
Copy the SSH command and paste it into the terminal.
ssh rocky@publicIP -i [Path of key pair file]
If it shows an access denied message run the following command, then run the above command again to connect via ssh.
chmod 400 [Path of key pair file]
Once launched in the Amazon EC2 Service, please connect to the instance via an SSH client using the ec2-user with the key pair associated at launch. Once connected as the ec2-user user, you will be able to sudo to the root user
Step 2. Verify the installation:
Follow the steps to verify the Groovy installation
1. Login with ssh
2. Type the below command to check the version
3. To check the version :
How to use Groovy in the terminal:
1. After connecting with ssh write the below command:
sudo nano HelloWorld.groovy
3. Paste the following code into the file:
println "Hello, World"
2. After that use the below command :
The output "Hello, World" should appear in your terminal.
That's it! You have successfully printed "Hello, World!" using Groovy in the terminal.
4. After using the above command then verify written the below command mentioned below image:
To monitor and assess application functions:-
a. Navigate to your Amazon EC2 console and verify that you're in the correct region.
b. Choose Instances and select your launched instance.
c. Select the server to display your metadata page and choose the Status checks tab at the bottom of the page to review if your status checks passed or failed.
For detailed information on how to use this application please visit: https://www.tutorialspoint.com/groovy/index.htm
For detailed information about managing and requesting increased service please visit: https://docs.aws.amazon.com/general/latest/gr/aws_service_limits.html