java-tutorials/aws-lambda/src/main/java/com/baeldung/lambda/LambdaRequestHandler.java

package com.baeldung.lambda;

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;

public class LambdaRequestHandler implements RequestHandler<String, String> {
    public String handleRequest(String input, Context context) {
        context.getLogger().log("Input: " + input);
        return "Hello World - " + input;
    }
}