Static block is a very important concept. Static blocks will be executed at the time of class loading. Hence, at the time of class loading, if we want to perform any activity, we have to define that inside a static block. We will see various usages of Static blocks in this tutorial. For example, at …
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Object Type Casting in Java says that one object reference can be typecast into another object reference. We can use parent reference to hold child object. For example, Object class reference can hold String class object. Object str = new String(); We can also use interface reference to hold implemented class object. Runnable thread = …
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Polymorphism is poly + morphism. Poly means multiple and morphism is form. So, polymorphism represents multiple forms. It is essentially one name but multiple forms. In Java, Polymorphism is the ability of an object to take on many forms. Type 1: The method name is same but we can take different types of arguments. This …
Cohesion and Coupling are two of the most important Object-Oriented Programming concepts apart from Inheritance, Polymorphism, and Encapsulation. We will discuss and understand cohesion and coupling in this tutorial. Coupling in Java The degree of dependency between the components is called coupling. If the dependency is more, then it is considered as tight coupling. And …
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In this article, we will understand variable resolution in Java. We will also see whether variable overriding is possible in Java or not. Then we will also take an example and understand of method overriding which involves variable arguments. We can override variable arguments method with another variable arguments method only. If we are trying …