Aggregation in Java OOPs | Example Program

Aggregation in Java is one of the core concepts of object-oriented programming. It focuses on establishing Has-A relationship between two classes. Aggregation is a more specialized form of unidirectional association that represents an ownership relationship between two class objects. In other words, when two aggregated objects have their own life … Read more

Association in Java | Types, Example

Association in Java is a relationship that defines the relationship between two classes that are independent of one another. It represents Has-A relationship. Association is one of the core concepts of object-oriented programming in Java. It indicates how objects of classes communicate with each other and how they use the … Read more

Has-A Relationship in Java | Types, Example

Has-A Relationship in Java | In addition to Uses-A relationship and Is-A relationship that represents inheritance, one more relationship is commonly used in object-oriented programming. This relationship is called Has-relationship in Java. When an object of one class is created as a data member inside another class, it is called … Read more

Class Relationships in Java | Types of Relationships

Class relationships in Java define the special relationships among different kinds of classes. For example, there is a special relationship between a class named Vehicle and a class Car: A Car is a type of Vehicle. There is a different kind of relationship among classes Shape, Circle, Rectangle, and Square. … Read more

50 Java Interface Interview Programming Questions

Here, we have listed the best collection of 45++ Interface interview questions and answers in Java. These interface interview questions can be asked in any technical tests and interviews from freshers and experienced. We have also covered a collection of interface programming questions, coding related errors, etc, for best practice. … Read more

40 Java Abstract Class Interview Questions Answers

Here, we have listed the best collection of 40 Java abstract class interview questions with answers. These abstract class interview questions can be asked in any technical tests and interviews in different companies. We have also covered interview programming exercise for best practice. If you prepare answers for these questions … Read more