Ec2InstanceEnvTest.java

package com.mycompany.app;
import com.amazonaws.auth.InstanceProfileCredentialsProvider;
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2Client;
import com.amazonaws.services.ec2.model.DescribeTagsRequest;
import com.amazonaws.services.ec2.model.DescribeTagsResult;
import com.amazonaws.services.ec2.model.Filter;
import com.amazonaws.services.ec2.model.TagDescription;
import com.amazonaws.util.EC2MetadataUtils;

public class Ec2InstanceEnvTest
{
    public static void main( String[] args ) {
        System.out.println( "===============================");

	System.out.println("account: " + EC2MetadataUtils.getInstanceInfo().getAccountId());
	System.out.println("region: " + EC2MetadataUtils.getEC2InstanceRegion());
	System.out.println("instance_id: " + EC2MetadataUtils.getInstanceId());
        printTags();

        System.out.println( "===============================");

    }

    private static String getInstanceId() {
	return EC2MetadataUtils.getInstanceId();
    }

    private static void printTags() {


    	AmazonEC2 ec2 = AmazonEC2Client.builder()
                .withCredentials(InstanceProfileCredentialsProvider.getInstance())
                .build();

        DescribeTagsRequest request = new DescribeTagsRequest()
                .withFilters(new Filter().withName("resource-id").withValues(getInstanceId()));

        DescribeTagsResult apiResult = ec2.describeTags(request);

        for( TagDescription td : apiResult.getTags()) {
            System.out.println(td);
        }
    }
}

        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-ec2</artifactId>
            <version>LATEST</version>
        </dependency>