Java 8 was a major release with many new features. Some of them are Lambdas, Functional interfaces, Streams, and Date Time API. This article will help you in preparing for the interview related to these APIs. I recently wrote another article aspart-2 of java 8 interview questions. 3.Java ...
Interfaces facilitate multiple inheritance, abstraction and can cut down on the coupling between components. 20) What is the use of encapsulation? It hides the implementation detail and in fact the data, all through invocations restricted by getters, setters and so on. 21) How to make a class...
↑↑ Scroll up to the list of Java questions[Question #6 – Changing Interfaces – Refactoring]Assume you are working on a large system in which you’re in charge of some infrastructural aspect. You provide the other developers in the project a DataObject interface which they then implement ...
In Java 7 or earlier, It is not possible to provide method implementations in Interfaces. Java 8 on-wards, it is possible. In Java SE 8, We can provide method implementations in Interfaces by using the following two new concepts: Default Methods Static Methods What is a Default Method? Why...
Interfaces: Collection List Set Map Sorted Set Sorted Map Queue Classes: Lists: Array List Vector Linked List Sets: Hash set Linked Hash Set Tree Set Maps: Hash Map Hash Table TreeMap Linked Hashed Map Queue: Priority Queue Q #26) What is meant by Ordered and Sorted in collections?
Packages in Java, are the collection of related classes and interfaces which are bundled together. By using packages, developers can easily modularize the code and optimize its reuse. Also, the code within the packages can be imported by other classes and reused. ...
A Package is a collection of related classes and interfaces. 3) What is the superclass of all exception classes? Java.lang.Throwable is the superclass of all exception classes. In Java, all exception classes are derived from this base class. ...
We’ll talk more about the impact these changes will have on the Java libraries in the next article in this series, and we’ll spend a little bit of time talking about how these new APIs, interfaces, and classes open up some new design approaches that previously wouldn’t have been ...
There are several types of inheritance in Java, including single inheritance (where a class inherits from only one superclass) and multiple inheritance (where a class inherits from multiple superclasses using interfaces). 6. What is the difference between method overloading and method overriding?
Collection Framework is a combination of classes and interface, which is used to store and manipulate the data in the form of objects. It provides various classes such as ArrayList, Vector, Stack, and HashSet, etc. and interfaces such as List, Queue, Set, etc. for this purpose. ...