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Showing posts with label programming. Show all posts
Showing posts with label programming. Show all posts

blank final variable in Java and How to use a blank final variable in Java with Example

3:54 AM
What is blank final variable in Java Blank final variable in Java is a final variable which is not initialized while declaration, instead they are initialized in a constructor. Java compiler will complain if a blank final variable is not initialized during construction. If you have more than one constructor or overloaded constructor in your class then blank final variable must be initialized in all of them, failing to do so is a compile-time error in Java. Alternatively, you can use constructor chaining to call one constructor from other using this keyword, in order to delegate initialization of blank final variable in Java. In this Java tutorial, we will see What is blank final variable in Java and a code example on How to use a blank final variable. How to use a blank final variable in Java with Example What is a blank final variable in Java with an example? The blank final variable is like any other final variable but must be initialized in the constructor as shown in below e...

Difference between Abstraction and Encapsulation in Java-OOPS

2:41 AM
Abstraction vs Encapsulation in Java; Difference between Abstraction and Encapsulation in Java. Here are some of the main differences between Abstraction vs Encapsulation in Java and OOPS(Object Oriented programming) concept. Abstraction and Encapsulation along with Inheritance and polymorphism form basis of Object-oriented programming in Java. 1) First difference between Abstraction and Encapsulation is that, Abstraction is implemented in Java using interface and abstract class while Encapsulation is implemented using private, package-private and protected access modifier. 2) Encapsulation is also called data hiding. 3) Design principles "programming for interface than implementation" is based on abstraction and "encapsulate whatever changes" is based upon Encapsulation.

What is method overloading in Java with Example

2:26 AM
What is method overloading in Java Method overloading in Java is a programming concept when programmer declares two methods of the same name but with different method signature, e.g. change in the argument list or change in the type of argument. method overloading is a powerful Java programming technique to declare a method which does a similar performance but with a different kind of input. One of the most popular examples of method overloading is System.out.println() method which is overloaded to accept all kinds of data types in Java. You have println() method which takes String, int, float,double or even char in output. All of those methods are collectively referred as an overloaded method in Java. The difference between method overloading and overriding is also a popular Java interview question. In next section, we will some important points about method overloading in Java and then a simple example of how to overload a method in Java. Properties of method overloading in ...

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