Core Java

The year 2022 marks Java's 25th anniversary. This page talks deeply about Core Java, patterns, best practices and productivity tips to help you become a pro developer at work, peers.

5 Mar 2023

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Array Implementation

You will learn how to implement a custom array-like data structure.

5 Mar 2023

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A Guide to Common Errors and Exceptions in Java and How to Fix Them

You will be introduced to the most common errors and exceptions in Java. With examples and steps to rectify them. Some tips and suggestions to developers are provided in detail.

4 Mar 2023

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Single Responsibility Principle Examples

We see some of the real-time software products following the SRP rule.

21 Feb 2023

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Definition of enums In Java, an enum (short for "enumeration") is a special data type that allows developers to define a set of named constants grouped under a single type. Each constant represents a unique value that can be assigned to a variable of that enum type. Enums were introduced

12 Feb 2023

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What is Imperative Programming? With Examples

Imperative programming is a programming paradigm that describes how a program operates and the steps it takes to produce a desired outcome. Simply put, it uses statements that change the program state.

11 Feb 2023

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Introduction to Java Streams API

This course deep-dives into each functional programming concept introduced in the Java 8 programming language.

1 Feb 2023

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Is Java "pass-by-reference" or "pass-by-value"?

Java uses pass-by-value for all parameters, including both primitive data types and objects, which affects how methods behave and how they should be written.

30 Jan 2023

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Twitter Registration Using Single Responsibility Principle

We design Twitter registration software with the help of the single responsibility principle that contains a notification service, database repository, account service, and execution class.

11 Dec 2022

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Introduction to SOLID Design Principles

SOLID is an acronym for the first five Object-Oriented design (OOD) principles by Robert C. Martin.

1 Dec 2022

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Java Primitive Data Types

We have eight primitive data types in Java that store most raw numerical data in programs. Let us see their bytes size, default value, min and max and ranges of each of them with example snippets.