Insights, tutorials, and thoughts on web development and technology.
Abstract Class in Java provides a mechanism by which we can just define the definition of the method in class and not implement it. Any Class that extends the Abstract class has to implement the abstr...
You have seen some websites which suddenly shows a Modal Pop Up for subscribing to their blog, to show a product deal or anything they want you to focus on. In this tutorial we will see how we can cre...
As we have seen in the previous tutorial that member variables and methods of SuperClass can only be accessed in subClass if they are declared as public. There are multiple uses of super keyword in Ja...
Inheritance is one of the most important features of Java. With Inheritance you can extend the features defined in one class into another Class. Thus promoting code reusability. The Class which one ex...
The Object Class is one special class in Java. All the other classes are subclasses of Object class. That means Object is superclass of all other classes. Object Class defined the following methods....
With Java you can write a Class that is enclosed within another Class. These are called Nested Class. ONe Usually goes for Nested Class when the New Class which you are creating is very closely Associ...
A Java Enum is a special Class that is used to defined a collection of constants. An Enum can contain constant, methods, etc. It was added in Java 5. Enum Example Consider a simple example to unders...
Interface in Java defines a IS-A relationship between classes and a mechanism to achieve abstraction. An Interface only consist of method definition and not the method body. Benefits of U...
Problem: Write a Java code to find the longest sequence of consecutive repetitive characters in a String. For example if a String is "aaaabbbbcccchhhhiiiiibbbbbbbbbccccccc" then your code should retur...