In Java, a package is a way to organize related Java classes within a namespace. It’s like the folders on your computer; instead of putting all Java classes into a single package in a specific folder, we separate them into different packages in different folders.… Read More
The main() method is the entry point of a standard Java application. The JVM uses the main() method to execute a Java program. Typically, we would write the complete code for the main() method as follows: package com.huongdanjava.java; public class Application { public static void… Read More
The join() methods in Spring for Apache Kafka Streams are inner joins, used to join messages with the same key published to two Apache Kafka topics. For example, if you have two topics, customers and orders, to join messages with the same key in these… Read More