April 17, 2025 - AWSTemplateFormatVersion: '2010-09-09' Description: Lambda function deployment with Java 21 runtime Parameters: LambdaHandler: Type: String Description: The handler for the Lambda function S3BucketName: Type: String Description: The name of the S3 bucket containing the Lambda function JAR file S3Key: Type: String Description: The S3 key (file name) of the Lambda function JAR file Resources: BaeldungLambdaFunction: Type: AWS::Lambda::Function Properties: FunctionName: baeldung-lambda-function Handler: !Ref LambdaHandler Role: !GetAtt LambdaExecutionRole.Arn Code: S3Bucket: !Ref S3BucketName S3K

December 16, 2023 - Tips and best practices on using Java 8 lambdas and functional interfaces.

January 8, 2024 - In this tutorial, we’re going to take a first look at the Lambda support in Java 8, specifically how to leverage it to write the Comparator and sort a Collection. This article is part of the “Java – Back to Basic” series here on Baeldung.

January 8, 2024 - AWS has released a library to help convert a Spring Boot application into an AWS Lambda. We look at how to use this library and how to deal with long cold start times.

June 24, 2025 - Learn how to include configuration and logging capabilities in an AWS Lambda, as well as libraries that reduce boilerplate code, while still keeping things lightweight

March 18, 2024 - Anonymous functions, lambda expressions, or function literals are all the same thing. Lambda (or \lambda) is the name given to anonymous functions in some languages like Python. These are functions not bound by an explicit identifier.

Lambda expressions are a new and important feature included in Java SE 8. They provide a clear and concise way to represent one method interface using an expression. Lambda expressions also improve the Collection libraries making it easier to iterate through, filter, and extract data from a ...

May 29, 2025 - Java 8 gives us lambdas, and by association, the notion of effectively final variables.

January 8, 2024 - A quick and practical guide to Lambda Behave - a new Java-based testing framework.

January 8, 2024 - Learn how to publish a lambda function as a REST endpoint in Amazon Web Services using API Gateway.

Baeldung. 50,426 likes · 373 talking about this. Baeldung publishes in-depth articles and tutorials in the Java ecosystem and general Web Development, with a strong focus on Spring, Spring Security...

May 29, 2025 - Learn how to serialize a lambda expression and its underlying mechanism.

March 19, 2024 - Lambdas Expressions are essentially anonymous functions that we can treat as values – we can, for example, pass them as arguments to methods, return them, or do any other thing we could do with a normal object.

January 24, 2024 - This means that using a Lambda with a database can cause connection problems. A sudden upscale of our Lambda can consume too many connections. Although the Lambda may release connections straight away, we still rely on the database being able ...

January 8, 2024 - Learn how to use var syntax with lambda expressions in Java 11

January 8, 2024 - Learn how to use lambda expressions with Stream.filter() and handle checked exceptions

March 18, 2024 - Lambda expressions also referred to as anonymous functions, are functions that are not bound to any identifier. They are much more convenient than full-fledged methods when we only need a function in one place.

March 19, 2024 - Learn what lambdas with receivers are and how they result in more simplicity and readability

March 26, 2025 - Java 8 brought a powerful new syntactic improvement in the form of lambda expressions. A lambda is an anonymous function that we can handle as a first-class language citizen.

October 14, 2025 - 1. Overview Java’s support for functional-style programming begins with two essential features: functional interfaces and lambda expressions. These constructs let us express behavior as values and pass it around with minimal boilerplate - a pattern that’s particularly powerful when working ...