Get EC2 tag key-value in Java

The following code snippet is a sample for retrieving AWS EC2 instance's tags in a Java program.

import java.util.Collection;
import java.util.LinkedList;

import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
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 GetTag{
 
 public static void main(String[] args){
  DescribeTagsRequest req = new DescribeTagsRequest();
  
  Collection filters = new LinkedList<>();
  LinkedList instanceList = new LinkedList<>();
                
                //Get instanceId of the current instance
  String instanceId = EC2MetadataUtils.getInstanceId();
  instanceList.add(instanceId);
  Filter filter = new Filter("resource-id", instanceList);
  filters.add(filter);
  req.setFilters(filters);
  AmazonEC2Client client = new AmazonEC2Client();
  client.setRegion(Region.getRegion(Regions.US_WEST_2));
  DescribeTagsResult tagResult = client.describeTags(req);
  if(tagResult != null){
   for(TagDescription tag:tagResult.getTags()){
    System.out.println(tag.getKey());
    System.out.println(tag.getValue());
   }
  }
 }
 
}