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Object Oriented Programming Articles
Page 376 of 589
Difference between default and static interface method in Java 8.
According to Oracle's Javadocs −Default methods enable you to add new functionality to the interfaces of your libraries and ensure binary compatibility with code written for older versions of those interfaces.A static method is a method that is associated with the class in which it is defined rather than with any object. Every instance of the class shares its static methods.Static method in interface are part of the interface class can’t implement or override it whereas class can override the default method.Sr. No.KeyStatic Interface MethodDefault Method1BasicIt is a static method which belongs to the interface only. We can write implementation ...
Read MoreHow to Run Your First Spring Boot Application in IntelliJ?
IntelliJ is simple and very convenient to use in building reliable as well as scalable systems with Spring Boot, and it has become tremendously famous among Java developers. It also offers a convention-over-configuration approach by obviating the demand for bulky boilerplate code and enabling designers to concentrate on business logic. This potent web tool aims in generating a basic project structure with the necessary dependencies. The second method focuses on importing a pre-existing Spring Boot project into IntelliJ IDEA so that one can work on an existing codebase. To execute this code in IntelliJ one must ensure that they have ...
Read MoreHow to Run Your First Spring Boot Application in Spring Tool Suite?
Spring boot facilitate the simple way to create robust, scalable, as well as production-ready applications, by doing this they have revolutionized the development of Java applications. The "convention over configuration" philosophy, which is embraced by Spring Boot as a component of the larger Spring ecosystem, lessens the effort of manual setup and enables developers to concentrate on business logic rather than boilerplate code. The Spring Boot experience is considerably more effective when combined with Spring Tool Suite (STS), a specialized IDE created for Spring development. To execute this code in Spring Tool Suite one must ensure that they have the following prerequisites before we ...
Read MoreDifference Between InputStream and OutputStream in Java
InputStream and OutputStream both are the abstraction process which can be implemented to access the low level data sets as pointers . They are the signified APIs to specify a particular data sequence of an operation by following some individual steps. The InputStream rearranges a data set as an ordered stream of bytes which actually reads the data from a file or received by using a network system. After ending the stream process it will return -1 as an integer value as Java does not contain any unsigned byte as data type. An OutputStream is a streamed process which mainly ...
Read MoreDifference between Inheritance and Interface in Java
Inheritance is a Method to create a hierarchy between multiple classes by replicating some properties from others. There are various types of inheritance present in Java, such as single inheritance, multiple inheritance, multilevel inheritance, hybrid inheritance, and hierarchical inheritance. Interface is the blueprint of a particular class which consists of the constant and abstract class. The interface class allows a machine to apply some specific properties on an object or a class. It is totally an abstract method which helps to perform the Java abstraction on a collection by specifying the behavior of a class. Now the task ...
Read MoreHow to Iterate LinkedList in Java?
The LinkedHashMap Class is similar to HashMap. But it has an additional feature in comparison to HashMap. The LinkedList class belongs to the java.util package. A doubly linked list is how LinkedList stores its elements. Given that our operations typically include insertion and deletion, LinkedList is the best option. The java.util package contains the LinkedList collection framework. It acts as an implementation of the non-contiguous LinkedList data structure, which saves elements in memory. Methods Used There are five main methods that you can use for iterating HashMap − Using the for loop Making use of a while loop Using ...
Read MoreHow to Iterate the Vector Elements in the Reverse Order in Java?
The Vector class has been a part of the Java collection system since Java version 1.2. Vectors are sometimes known as Dynamic Arrays because, unlike ordinary arrays, they can expand and contract in size. Ensuring thread-safety, Vectors are synchronized. While there exists a third approach that involves using Apache Commons to iterate through the vector in reverse, this method necessitates the downloading of additional jar files and packages, which is not widely supported by most systems. Essentially, there are only two primary methods to traverse through vector elements in reverse order. Methods Used There are two methods used here − ...
Read MoreHow to iterate over a 2D list (list of lists) in Java?
A data structure known as a 2D list or list of lists can be utilised for saving a collection of data in a two-dimensional format. A row in the 2D list is represented by each inner list in this list of lists. A 2D list could be utilised, for instance, to store the data for a chessboard, where every component in the list corresponds to a single square on the board. Methods Used A 2D list can be iterated in one of the two methods that follow − Using Loops Using iterator Method 1: Employing Loops There are ...
Read MoreHow to Iterate LinkedHashMap in Reverse Order in Java?
The LinkedHashMap serves the purpose of maintaining the precise order of element addition. It elucidates the method for accessing elements in the sequence they were inserted. In addition to storing values based on their keys, the LinkedHashMap class expands upon the functionalities of the Hash Map class and implements the Map interface. It exclusively accommodates unique elements or mappings. It affords us the flexibility to utilize various data types, such as text, float, integer, etc., for assigning keys and values. By initially reversing the elements, we can alter the order of elements in the linked hash map. Subsequently, we can ...
Read MoreHow to Create Spring Bean in 3 Different Ways?
Spring is a highly popular framework within the Java EE ecosystem. It is an open-source and lightweight framework that empowers Java developers to build reliable, scalable, and simplified business applications. The primary goal of this framework is to offer you a variety of tools for managing your business items. In contrast to conventional Java frameworks and APIs such as JSP, JDBC and Java Servlet, developing web applications is far simpler. In Spring, objects—primarily those controlled by the Spring IoC Container. It plays a significant role in the application. A Bean is nothing more than an object that a Spring Ioc ...
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