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public class LambdaFunctionHandler implements RequestHandler<KinesisEvent, Integer> {

    @Override
    public Integer handleRequest(KinesisEvent event, Context context) {
        context.getLogger().log("Input: " + event);

        for (KinesisEventRecord record : event.getRecords()) {
            String payload = new String(record.getKinesis().getData().array());
            context.getLogger().log("Payload: " + payload);
        }

        return event.getRecords().size();
    }
}

context.getLogger().log("Log message to emit: " + someMessage);

package com.amazonaws.lambda.demo;

import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;
import com.amazonaws.services.lambda.runtime.events.KinesisEvent;
import com.amazonaws.services.lambda.runtime.events.KinesisEvent.KinesisEventRecord;
import com.amazonaws.services.sqs.AmazonSQS;
import com.amazonaws.services.sqs.AmazonSQSClientBuilder;
import com.amazonaws.services.sqs.model.SendMessageBatchRequest;
import com.amazonaws.services.sqs.model.SendMessageBatchRequestEntry;
import com.fasterxml.jackson.databind.ObjectMapper;

public class LambdaFunctionHandler implements RequestHandler<KinesisEvent, Integer> {

	final int MAX_SQS_BATCH_SIZE = 10;

	private AmazonSQS sqs = AmazonSQSClientBuilder.defaultClient();

    @Override
    public Integer handleRequest(KinesisEvent event, Context context) {

    		Iterator<KinesisEventRecord> iterator = event.getRecords().iterator();    		
    		AffineTransform transformer = new AffineTransform(1, 0, 0, -1, 0, 400);
    		ObjectMapper mapper = new ObjectMapper();
    		Point2D dstPoint = new Point2D.Double();
    		boolean sendMessagesToSQS = true;
    		
    		try
    		{
    			//
    			// Read the SQS Queue Target from the Lambda Environment Variables
    			//
    			String sqsUrl = System.getenv("TargetSQSUrl");
    			if ( sqsUrl == null || sqsUrl.isEmpty() )
    			{
    				context.getLogger().log("WARNING:: Environment Variable [TargetSQSUrl] is not set. No messages will be sent via SQS");
    				sendMessagesToSQS = false;
    			}
    				
	    		while ( iterator.hasNext() )
	    		{
	    			int messageCounter = 0;
	
	        		// Prepare a batch request to write all the messages we have received in this invocation
	        		Collection<SendMessageBatchRequestEntry> entries = new ArrayList<SendMessageBatchRequestEntry>();
	
	        		while ( iterator.hasNext() && messageCounter++ < MAX_SQS_BATCH_SIZE )
	        		{
		            String payload = new String(iterator.next().getKinesis().getData().array());
		            context.getLogger().log("Payload: " + payload);
		            DrawPoint transformedPoint = new DrawPoint();
	
		            try {
	
						transformedPoint = mapper.readValue(payload, DrawPoint.class);
			            // Transform the point
			            Point2D srcPoint = new Point2D.Double(transformedPoint.getX(), transformedPoint.getY());	            
			            transformer.transform(srcPoint, dstPoint);
	
			            // Update the payload
			            transformedPoint.setX((int)dstPoint.getX());
			            transformedPoint.setY((int)dstPoint.getY());
	
		                 // Add this payload into our batch
		        		    	SendMessageBatchRequestEntry entry = new SendMessageBatchRequestEntry(
		        		    			"msg_" + messageCounter,
		        		    			mapper.writeValueAsString(transformedPoint)
		        		    			);
	
		        		    	entries.add(entry);
					}
		            catch (Exception e)
		            {
		            		context.getLogger().log("Unable to deserialise " + payload + " as a DrawPoint! " + e.getMessage());					
					}
	        		}
	
	        		if ( sendMessagesToSQS && entries.size() > 0 )
	        		{
	        			// We have reached the end of the records or we have reached the maximum	        		
		        		// batch size allowed for SQS, so we need to send our entries
		        		context.getLogger().log("Sending batch of " + (messageCounter - 1) + " events to SQS...");
		
		        		SendMessageBatchRequest batch = new SendMessageBatchRequest()
		        				.withQueueUrl(sqsUrl);
		
		            batch.setEntries(entries);
		
		            // Perform the message sending
		            sqs.sendMessageBatch(batch); 
	        		}
	    		}
    		}
		catch (Exception e)
        {
        		context.getLogger().log("EXCEPTION::Aborting Lambda processing");
        		context.getLogger().log(e.getStackTrace().toString());
		}
    		
        return event.getRecords().size();
    }

    // Inner class must be marked as static in order for the JSON mapper to deserialise
	private static class DrawPoint {

		private int x;
		private int y;
		private long timestamp;
		private boolean clear;
		
		public int getX() {
			return x;
		}
		public void setX(int x) {
			this.x = x;
		}
		public int getY() {
			return y;
		}
		public void setY(int y) {
			this.y = y;
		}
		public long getTimestamp() {
			return timestamp;
		}
		public void setTimestamp(long timestamp) {
			this.timestamp = timestamp;
		}
		public boolean isClear() {
			return clear;
		}
		public void setClear(boolean clear) {
			this.clear = clear;
		}	
	}
}