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  • Creating callback functions in Java

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    If you are familiar with some event-driven languages such as JavaScript, especially the ES6 version or later, you probably have done some work with callback functions all the time. By […]

  • Why do you need to override equals and hashCode methods in Java?

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    If you have used some data structures such as a hash map or a hash set for storing your custom object, you probably have to write your own implementation of […]

  • Delegate pattern with Consumer interface in Java

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    As a Java programmer, sometimes you run into a situation when you want to take a task of an object and give it to another object, meaning the original object […]

  • Understand Method References in Java

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    Before Java 8, to provide an implementation for an interface we need either to create a concrete class that implements this interface, or more concise we can use an anonymous […]

  • A Gentle Guide to Socket in Java

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    What is Socket? A socket is an interface to send and receive data in two programs on the network in a bidirectional manner. In other words, a socket represent one […]

  • How to configure Tomcat Server to Run Web Application on IntelliJ IDEA

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    In this article, we are going to learn how to configure the Tomcat server to run a simple “Hello World” application on the web browser with JSP and Servlet (i.e […]

  • Different ways to Iterate any Map in Java

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    1. Using entrySet() The Map.entrySet() returns a collection view Set<Map.Entry<K, V>> of the mappings in this map. To iterate over a map, we can use the getKey() method to get […]

  • Runnable and Callable in Java

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    In the early days of Java programming, whenever you want to create a thread, usually you would need the help of whether extending the Thread class or implementing the Runnable […]

  • What’s new in Java 15?

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    Java 15 will officially be released in September 2020, however its new and updated features are now available for us as early access for who wants to find out. In […]

  • A Guide To Functional Interfaces in Java

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    A functional interface is an interface that contains exactly one abstract method. However, it still can have an arbitrary number of default or static methods. Talk about a functional interface […]

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