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Logging in Apache Camel

Quick intro to logging in a Camel application.

Java Weekly, Issue 536

News on Java evolving through JEPs and an exploration of the Azure Spring Apps platform from Microsoft (and VMware). A solid week.

Merge Overlapping Intervals in a Java Collection

Learn how to take a Java collection of intervals and merge the overlapping ones.

Find Map Keys with Duplicate Values in Java

Learn how to find map keys associated with duplicate values in Java.

@Subselect Annotation in Hibernate

Learn how to use @Subselect to select entities not from a particular table but from a sub-select query.

Saga Pattern in a Microservices Architecture

Learn how to implement Saga Pattern in a microservices architecture with Orkes Conductor.

Reading a .gz File Line by Line Using GZIPInputStream

Sometimes, we need to read compressed .gz files in Java. Learn to use Java’s built in stream libraries to read from gzip format files.

How to Convert Excel to JSON in Java

Explore two methods for converting Excel files to JSON format in Java: reading and processing Excel data with Apache POI and then converting it to JSON using the JSON and Jackson libraries.

Guide to ExecutorService vs. CompletableFuture

Explore two essential Java classes for handling asynchronous tasks: ExecutorService and CompletableFuture.

Check if a Given Time Lies Between Two Times Regardless of Date

Explore ways to determine if a particular time lies within the two times without considering dates.

Dynamically Managing Kafka Listeners in Spring Boot

Learn how to manage Kafka Listeners dynamically in Spring Boot.

Representation of Integers at a Bit Level in Java

Understanding how Java represents integers can help us with certain mathematical operations. In this article, we look at integer representation and how to use bitwise operations with Java numbers.