Polymorphism is one of the most important Java concepts. We might be not even aware we use it all the time but when we instantiate an ArrayList and assign it to a variable of the List type, we are using polymorphism. It’s a powerful concept...
Overloading is one of the core Object-Oriented programming concepts which is highly important to master. It’s an important fundament that can make our code more readable and easier to maintain, therefore with fewer bugs when applied...
The equals and hashcode methods are extremely important to be mastered because of the lack of knowledge of them may cause catastrophic bugs. Learn how to add unique elements into the Set interface by taking this Java Challenge and take your Java...