Launching an EC2 Instance using AWS SDK Java

Question

I was trying to create a new EC2 Instance in Eclipse Java using AWS SDK. Can someone provide the code for doing that?

Answer 1

Hey @Anjali, all you need to do is create a AWS Java Project.

1. Define your security credentials.

2. Setup an Amazon EC2 Client.

3. Launch an EC2 instance

4. Set tags for the EC2 Instance

5. Start the Instance.

Answer 2

package com.ec2application.ec2application;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.CreateTagsRequest;
import com.amazonaws.services.ec2.model.Instance;
import com.amazonaws.services.ec2.model.InstanceNetworkInterfaceSpecification;
import com.amazonaws.services.ec2.model.RunInstancesRequest;
import com.amazonaws.services.ec2.model.RunInstancesResult;
import com.amazonaws.services.ec2.model.StartInstancesRequest;
import com.amazonaws.services.ec2.model.Tag;
public class EC2CreateInstance
{
    private static final AWSCredentials AWS_CREDENTIALS;
    
    static {
        // Your accesskey and secretkey
        AWS_CREDENTIALS = new BasicAWSCredentials(
                "Your-ID",
                "Your secret-key"
        );
    }
    public static void main(String[] args) {
        
        // Set up the amazon ec2 client
        AmazonEC2 ec2Client = AmazonEC2ClientBuilder.standard()
                .withCredentials(new AWSStaticCredentialsProvider(AWS_CREDENTIALS))
                .withRegion(Regions.US_EAST_1)
                .build();
         
        // Launch an Amazon EC2 Instance
        RunInstancesRequest runInstancesRequest = new RunInstancesRequest().withImageId("ami-0080e4c5bc078760e")
                .withInstanceType("t2.micro") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html
                .withMinCount(1)
                .withMaxCount(1)
                .withKeyName("priyajdm")
                .withNetworkInterfaces(new InstanceNetworkInterfaceSpecification()
                        .withAssociatePublicIpAddress(true)
                        .withDeviceIndex(0)
                        .withSubnetId("subnet-id")
                        .withGroups("sg-id"));
 
        RunInstancesResult runInstancesResult = ec2Client.runInstances(runInstancesRequest);
 
        Instance instance = runInstancesResult.getReservation().getInstances().get(0);
        String instanceId = instance.getInstanceId();
        System.out.println("EC2 Instance Id: " + instanceId);
 
        // Setting up the tags for the instance
        CreateTagsRequest createTagsRequest = new CreateTagsRequest()
                .withResources(instance.getInstanceId())
                .withTags(new Tag("Name", "Edurekademo"));
        ec2Client.createTags(createTagsRequest);
 
        // Starting the Instance
        StartInstancesRequest startInstancesRequest = new StartInstancesRequest().withInstanceIds(instanceId);
 
        ec2Client.startInstances(startInstancesRequest);

    }
}

This is the code you can use to Create an EC2 Instance using AWS SDK.

Comments

Thank you. It worked fine.

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@Shashank I am glad it did.

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Is working on AWS services easy on python or java??

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Hey @Shashank, working with Python is much easier as doing the same thing in Python will take less lines of code and also make things easier.

Eg:-  https://www.edureka.co/community/32006/how-to-create-an-ec2-instance-using-python-boto3?show=32006#q32006

Try the one in Python and you can see the difference.

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Can anyone please also share the code to access an app deployed on EC2 instance? I have a java app deployed on EC2 instance. I need a java code which accesses the app deployed on this EC2 instance. The app returns a string. I need to get that string in my java code residing on my local machine.