Web services are popular these days because they are language and platform independent. It’s easy to create SOAP and REST based web services. This post will help you learn about web services and related interv
Follow-up questionsThis works well as long as all details related to the attack can be encapsulated in the Weapon subclasses. However, what if the Player needs to perform different actions depending on the weapon type? For example, swing()ing a gun or fire()ing a sword is unlikely to ...
Answer:This is again related to double checked locking pattern, well synchronization is costly and when you apply this on whole method than call to getInstance() will be synchronized and contented. Since synchronization is only needed during initialization on singleton instance, to prevent creating an...
52) What is Cohesion? Cohesion is about the degree to which a class or a module's responsibilities arerelated. High cohesion — a class does one thing, making it moremaintainable. High cohesionmeans the class has a well-defined purpose and performs a specific task, making it easier to main...
In this section, we will look into some programming questions related to java exceptions. What is the problem with the below program? package com.journaldev.exceptions; import java.io.FileNotFoundException; import java.io.IOException; public class TestException { ...
The experts drew up this list of top Java interview questions and answers after studying interview patterns and consulting recruiters. You can take up Java training and add the certification to your resume for well versing java programming-related concepts. Sprintzeal is a global training provider ...
1. Questions on OOP Core Concepts 1.1. What are the four major pillars of OOP? The major pillars on which OOP relies areEncapsulation,Inheritance,Polymorphism, and Abstraction. Encapsulationprovides security to our application; it consists ofprivatevariable declarations (data hiding) and accessor metho...
Static: This static keyword is used to make main() method as a class related method so that JVM can invoke it without instantiating the class. It is also helpful to avoid unnecessary memory usage with object just for calling main method. Void: The void keyword is used to specify that a ...
Packages create a standardized hierarchical structure, making it easier to locate related classes. Java class, variable, objects, and argument questions What is a class in Java? All Java codes are defined in a class. It has variables and methods. ...
// Appropriate method-related code. } E.g. Synchronizing a block of code inside a function: public myFunction (){ synchronized (this) { // Synchronized code here. } } 4What is Collection API? The Collection API is a set of classes and interfaces that support operation on collections of...