Java Language

"Discover frequently asked Java programming interview questions and logical programs, such as reversing a number. Explore essential Java features, the Singleton design pattern, and the Java Virtual Machine (JVM).

Abstraction refers to the act of representing essential features to the outside world and showing the necessary functionality.  Data Abstraction may also be defined as the process of identifying only the required characteristics of an object ignoring the irrelevant details. The properties and behaviors of an object differentiate it from …

The Java Collection Framework, designed by Joshua Bloch, revolutionized data manipulation in Java. Discover the framework's rich history, benefits, and various collection types. Dive into a world of high-performance, reusable data structures and algorithms.

String builder in Java is a class. It is like string objects, except that they can be modified. String Builder class is available in java.lang package. Internally String builder objects are treated like variable length arrays which contain sequence of characters. At any point of time, the length and content …

A string buffer is similar to String, but the difference is string cannot be modified but String Buffer is modified. String Buffer is thread safe and mutable sequence of characters. At any point in time it contains some particular sequence of characters, but the length and content of the sequence …

In this Article we are discussing about theExceptions and how to handle our custom exceptions in java. First we need to know about the what is Exception and what is Error? Exception is an abnormal condition which stops the execution of the program but an Error is sub class of …

Servlet Filters: If you are a beginner in web application programming, then you have a doubt however the user unless logged in to the account access the resources. Most of the beginners don’t know how solve this problem.This is avoided by using . The basic functionality of the servlet filter …

Web socket are introduced in java EE7 JSR 356 is related to web socket and provides API for creating web socket applications. Web socket is an application protocol that for a ideas full-duplex communication between two peers over the TCP protocol. The web socket enables web applications to deliver a …

Expert answers to top Java interview questions for your coding journey.Here are top interview questions in Java for both freshers and experienced. Interview Questions in Java 1) String is mutable or immutable in java? Ans: In java all string are immutable. ( a mutable string can be changed but immutable …