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Introduction to JavaParser
A quick and practical guide to JavaParser.
Get the First and the Last Elements From an Array in Java
Learn how to access the first and last elements of a Java array.
Configuring Retry Policy for gRPC Request
Learn how to implement retry policies in gRPC.
Convert InputStream to Stream in Java
Learn how to take an InputStream and convert it into a functional Stream in Java.
Introduction to SSHJ
Learn the basic usage of the SSHJ library for secure communication with remote servers.
How to Convert Between ZonedDateTime and Date in Java
Learn how to convert between ZonedDateTime and Date in Java.
Perform Action Only if All Optionals Are Available
Learn how to perform an action only if all optionals are available.
Convert a Queue to a List
Learn various ways to convert Queue to List in Java.
Convert Jackson JsonNode to Typed Collection
Explore different methods of converting Jackson’s raw data type JsonNode into typed Java collections.
How to Iterate a List of Maps in Java
Explore various techniques for iterating through a List of Maps in Java.
Convert an Optional to an ArrayList in Java
Explore various approaches to converting Optional to ArrayList.
Using Reactor Mono.cache() for Memoization
In this tutorial, we learn about memoization and demonstrate how to use Mono.cache() from the Project Reactor.
Full and Partial Text Search in MongoDB
Explore how to do full and partial text searches in MongoDB.
Inheritance vs. Composition in JPA
Explore the fundamental differences between inheritance and composition in JPA entity modeling.
Converting short to byte[] in Java
Learn how to convert a short value to a byte[] array.
OpenAPI Custom Generator
Learn the steps required to create a custom generator for the OpenAPI generator tool.
Save Child Objects Automatically Using JPA
Learn how to save child objects automatically with JPA.
Fix Spring Boot H2 JdbcSQLSyntaxErrorException “Table not found”
This tutorial explores addressing the “Table not found” error in H2 databases, commonly encountered in Spring Boot applications. You can mitigate this issue by configuring H2, mapping entities, and managing data with JPA repositories.
Collecting into Map using Collectors.toMap() vs Collectors.groupingBy()
Learn about the difference between toMap and groupingBy when collecting a Java Stream into a Map.