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Class Concepts in Java: Declaring Methods
Our Point class declared here contains only fields. Now, we will add a method to the Point class which will help us understand the method declaration and calling syntax.
Inheritance in Java: Why Inheritance?
IntroductionOne of the major benefits of object-oriented programming is code reuse. Programmers develop lot of code over time. If this code can be reu
Exception Handling in Java: Basic Concepts
Looking at Murphy’s Law, “If anything simply cannot go wrong, it will anyway,” we know that we should always prepare ourself for the worst-case scenario.
Exception Handling in Java: try-catch statements
We can easily catch and handle errors in our programs so that they do not terminate abnormally. When a program terminates abnormally, typically it dum
Exception Handling in Java: Combining Exception Handlers
In my previous post, we have learnt how we can handle multiple exceptions in our code by providing multiple numbers of catch block specific to a particular exception.
Exception Handling in Java: The finally Statement
In the program example discussed in the previous post (multiple catch blocks section), we made a URL connection to read the home page contents from the user-specified URL.
Exception Handling in Java: Error Types
When a running Java application fails, it creates an exception object encapsulating the error condition and throws it back to the running code. The ex
Nested Classes in Java: Anonymous Classes
A local class without a name is called an anonymous class. If we need only a single instance of a local class, we will create an anonymous class. Typically, a local class has a name and thus a declaration.
Nested Classes in Java: Local Classes
A non-static class defined within a class is called a member class of the enclosing class. A member class is commonly used as a helper class to the enclosing class.
Nested Classes in Java: Demonstrating Use of Inner Classes
uppose we are required to create an application that generates a random list of odd numbers. The list itself should consist of a random number of entr
Nested Classes in Java: Why use Nested Classes?
Introduction As the name suggests, we can embed a class declaration within another class. This gives us the power to hide our classes within an outer
Abstract Classes in Java
For an interface containing several methods, a developer can provide the implementation for some of the methods in a class that implements the interface.