The final keyword in java is used to restrict the user. The java final keyword can be used in many context. Final can be variable method class The final keyword can be applied with the variables, a final variable that have no value it is called blank final variable or uninitialized final variable. It can … Read more
A class that is declared with abstract keyword, is known as abstract class in java. It can have abstract and non–abstract methods (method with body) Abstraction in Java Abstraction is a process of hiding the implementation details and showing only functionality to the user Abstraction lets you focus on what the object does instead of … Read more
Inheritance in java is a relationship between a superclass: a more generalized class A subclass: a more specialized class The subclass ‘inherits’ data (variables) and behavior (methods) from the superclass Important facts about inheritance in Java Default superclass: Except Object class, which has no superclass, every class has one and only one direct superclass (single … Read more
Packages in java are those class which contains methods without the main method in them. Packages are mainly used to reuse the classes which are already created/used in other program We can define many number of classes in the same package Packages are mainly divided into two types Built in packages User defined Packages The … Read more
In java a class is the blueprint from which individual objects are created. Example In object–oriented terms, we say that your bicycle is an instance of the class of objects known as bicycles Java classes contain fields and methods. A field is like a C++ data member, and a method is like a C++ member … Read more
The Java programming language supports overloading methods, and Java can distinguish between methods with different method signatures. This means that methods within a class can have the same name if they have different parameter lists In the Java programming language, you can use the same name for all the drawing methods but pass a different … Read more
The only required elements of a method declaration are the method’s return type, name, a pair of parentheses, (), and a body between braces, {}. Two of the components of a method declaration comprise the method signature—the method’s name and the parameter types. The return type—the data type of the value returned by the method, … Read more
The object oriented paradigm is a methodology for producing reusable software components The object–oriented paradigm is a programming methodology that promotes the efficient design and development of software systems using reusable components that can be quickly and safely assembled into larger systems. Object oriented programming has taken a completely different direction and will place an … Read more
The access modifiers in Java specifies the accessibility or scope of a field, method, constructor, or class. We can change the access level of fields, constructors, methods, and class by applying the access modifier on it. There are four types of Java access modifiers: Private:The access level of a private modifier is only within the … Read more