209 Tutorials Available in interview

Java Programming Library calls and type conversion Basic Cheat Sheet

Jan 16, 2022

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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?

Jan 16, 2022

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Java Programming Anatomy of an if statement Cheat Sheet

Jan 15, 2022

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Java Programming Printing, Parsing command line arguments and Math Library Basic Cheat Sheet

Jan 14, 2022

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Java Programming Comparison operators, floating point numbers and Booleans Cheat Sheet

Jan 13, 2022

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Java Programming Integers, Declarations and assignment statements Cheat Sheet

Jan 12, 2022

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Java Programming Hello world cheat sheet

Jan 11, 2022

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What is Time Complexity

Jan 8, 2022

java python interview

How to Run code after Spring Boot application starts

Jan 4, 2022

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Write a program to find Duplicate character in a String Java

Dec 21, 2021

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Log4J Vulnerability (Log4Shell) Explained - for Java developers

Dec 20, 2021

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What are WebSockets and How is it different from HTTP

Dec 19, 2021

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Is Oracle JDK Free again - for Java developers

Dec 18, 2021

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What is Web 3.0 Blockchain, Its building blocks, and Evolution of the Internet

Dec 17, 2021

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How to fetch top 10 trending hashtags from Twitter in India using twitter4j

Dec 16, 2021

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Difference between Map and Flat Map

Dec 8, 2021

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How to find a file recursively in Java

Nov 12, 2021

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How to find age using date of birth in Java

Nov 11, 2021

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How to get the width and height of a string in Java

Nov 10, 2021

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How to convert date in to yyyy-MM-dd Format in Java

Nov 9, 2021

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How to resolve Web server failed to start. Port 8080 was already in use

Nov 8, 2021

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What is Waterfall Model, Spiral Model and VV Model/Verification Validation Model/V Model in SDLC

Nov 5, 2021

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What is SDLC and its phases

Nov 4, 2021

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What is the difference between Error, Bug, Defect, and Failure

Nov 3, 2021

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What is Manual Testing and Why is it required

Nov 2, 2021

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How to do system design for a Movie Ticket Booking System like bookmyshow.com,fandango.com

Nov 1, 2021

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The Four Pillars of Object Oriented Programming

Oct 30, 2021

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What is Race Condition In MultiThreading Java

Oct 13, 2021

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What is Synchronized in Java MultiThreading

Oct 12, 2021

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How to print Thread numbers in MultiThreading Java

Oct 11, 2021

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What is join method used for in MultiThreading Java

Oct 10, 2021

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What is isAlive method used for in MultiThreading Java

Oct 9, 2021

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How to create and run multiple threads using for loop

Oct 8, 2021

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What is MultiThreading and How to create a thread in Java

Oct 7, 2021

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How to undo the most recent local commits in Git

Oct 6, 2021

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What are the system design Specifications and Features of Cache

Oct 3, 2021

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What is Cache and its benefits

Oct 2, 2021

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What is Distributed Cache

Oct 1, 2021

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Simple code Naming things and Naming Conventions

Sep 21, 2021

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Git cheatsheet that all coders need to know, Ever accidentally deleted files or necessary code? Or do you wish to look back at an older version of your code?

Sep 20, 2021

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8 Must-Have Git Commands

Sep 18, 2021

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What’s So Great About Java? Here Are Three Things!

Sep 18, 2021

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How to calculate Java Objects, Arrays, Primitives, and Complex Classes. Checking calculated size correctness using JProfiler.

Sep 17, 2021

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How to Convert DOCX to HTML in Java

Sep 16, 2021

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How to remove substring from String in Java

Sep 15, 2021

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Java virtual Machine(JVM) and its architecture

Sep 14, 2021

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CI/CD Implementation 5 Common Mistakes and How to Avoid Them

Sep 13, 2021

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Gang of Four design patterns, including class diagrams, explanations, usage info, and real world examples.

Sep 10, 2021

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Overview of key aspects of the Java language and references on the core library, commonly used tools, and Java 8 features.

Sep 9, 2021

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GraphQL vs REST, How To Choose One Over The Other

Sep 7, 2021

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The Performance Impact of java.lang.System.getProperty()

Aug 26, 2021

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Can You Override Static Method in Java

Aug 25, 2021

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Does Java Support Pass by Value or Pass by Reference

Aug 24, 2021

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Difference between Factory and Abstract Factory Design Pattern in Java

Aug 23, 2021

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Why Java does not support Operator overloading

Aug 21, 2021

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Polymorphism, Overloading, and Overriding in Java and Object Oriented Programming

Aug 20, 2021

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What is Encapsulation in Java and OOP with Example

Aug 19, 2021

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What is Inheritance in Java with example - Object Oriented Programming

Aug 18, 2021

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What is Object in Java and Object Oriented Programming? Example Tutorial

Aug 17, 2021

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Difference between Inheritance and Composition in Java and Object Oriented Programming

Aug 16, 2021

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Recursion in Java with an Example

Aug 15, 2021

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Java Exception Design, what is a Java exception, and how to use Java Exceptions

Aug 13, 2021

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OOPs Concepts in Java with Basic Examples

Aug 9, 2021

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Low Code and No-Code Considerations

Aug 9, 2021

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Ten Things About Java 17 and Ten features to help justify a move from Java 8 to Java 17

Aug 7, 2021

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Basic Annotations in Spring Boot

Aug 6, 2021

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Object-oriented Programming vs. Functional Programming Which Is Better?

Aug 5, 2021

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How to make POST and PATCH requests idempotent

Aug 5, 2021

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What are the Java Best Practices for High performance Serialization

Aug 4, 2021

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Fetching a DTO With a To-Many Association

Aug 3, 2021

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Which build tool is more commonly used for Spring Boot, Maven or Gradle?

Aug 3, 2021

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Does getInstance() denote a singleton according the singleton pattern in Java

Aug 2, 2021

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What is a Race Condition

Aug 1, 2021

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Java Array Declaration – How to Initialize an Array in Java with Example Code

Jul 27, 2021

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Important keywords to refer before attending a Java interview

Jul 26, 2021

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How do you assert that a certain exception is thrown in JUnit 4 tests

Jul 25, 2021

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How to catch multiple Java exceptions in the same catch clause

Jul 24, 2021

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What are checked vs unchecked exceptions in Java

Jul 23, 2021

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Vs code shortcuts for Developers in Windows

Jul 23, 2021

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Is it IllegalArgumentException or NullPointerException for a null parameter in Java

Jul 22, 2021

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What is the difference between the following ways of handling InterruptedException? What is the best way to do it in Java

Jul 21, 2021

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What does the Refresh option in Windows actually do

Jul 21, 2021

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How to find the minimum or least value in an Integer List using Java 8

Jul 20, 2021

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What is Association Mapping and examples of One to One, Many to Many and One to Many and Many to One relationships

Jul 19, 2021

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What is the difference between query, native query, named query and typed query

Jul 18, 2021

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What are the examples of GoF Design Patterns in Java's core libraries

Jul 17, 2021

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How to know which Java thread is hogging the CPU

Jul 17, 2021

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How many threads can a Java VM support

Jul 16, 2021

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What are Semaphore problems in Java with the Dining Philosophers

Jul 15, 2021

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What are important Threading Techniques & Concepts in Java

Jul 14, 2021

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Is it possible view/pause/kill a particular thread from a different java program running on the same JVM

Jul 13, 2021

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How to make your collections thread-safe?

Jul 12, 2021

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What are the best naming conventions for threads in Java

Jul 11, 2021

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In Java, do I need to declare my collection synchronized if it's read-only

Jul 10, 2021

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Java 11 Features

Jul 10, 2021

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Synchronizing on String objects in Java

Jul 9, 2021

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How many threads should I use in my Java program

Jul 8, 2021

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What is the volatile keyword useful for in Java.

Jul 7, 2021

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How to implement simple threading with a fixed number of worker Threads

Jul 6, 2021

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What is the difference between notify() and notifyAll() in Threads.

Jul 5, 2021

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What would make a single task executor stop processing tasks in Java Threads.

Jul 4, 2021

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How can you ensure a block of code can not be interrupted by any other Thread in Java

Jul 3, 2021

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How to test methods that call System.exit() in Java

Jul 3, 2021

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How are Java Thread priorities translated to an OS thread priority

Jul 2, 2021

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How to parse logs written by multiple Threads

Jul 1, 2021

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What are the benefits of Performance Optimization in Java

Jun 30, 2021

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What is Garbage Collection Performance Tuning in Java

Jun 29, 2021

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What are the best Coding Practices to be followed while writing Java code in order to avoid performance issues

Jun 28, 2021

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How to wait for a number of threads to complete in Java

Jun 6, 2021

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Which concurrent Queue implementation, should I use it in Java

Jun 5, 2021

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What is the difference between a synchronized method and synchronized block in Java

Jun 4, 2021

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How to make an ArrayList Read Only in Java

Jun 3, 2021

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Core java interview questions and answers

May 20, 2021

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Restful web services interview questions

May 20, 2021

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WAP to print the sum of harmonic progression series

Apr 30, 2021

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How Cache data to improve performance

Apr 27, 2021

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What is a Java bean

Apr 26, 2021

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WAP to define a method which returns the sum of digits of the given two digit number in Java

Apr 26, 2021

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What is abstraction in Java

Apr 25, 2021

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Real time example of a singleton design pattern in Java

Apr 24, 2021

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What is the difference between Static and Dynamic web application

Apr 24, 2021

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What is frontend and backend web development

Apr 21, 2021

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What is final keyword in java

Apr 20, 2021

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What is Instance Initializer block in Java

Apr 20, 2021

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What is instanceof operator in Java

Apr 20, 2021

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What is super keyword in java

Apr 18, 2021

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What is Covariant Return Type in java

Apr 17, 2021

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What is method overriding in Java

Apr 17, 2021

java J2ee interview

What is method overloading in Java

Apr 15, 2021

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What is Polymorphism in Java

Apr 14, 2021

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Java Static keyword real time example in Java

Apr 14, 2021

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WAP to check sorting order in list in Java

Apr 13, 2021

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WAP to create a thread using lambda expression and print “Hello” in Java

Apr 13, 2021

java Java8 interview

Java interview question on interfaces implemented by class with same default method in two interfaces

Apr 13, 2021

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How to create a memory leak in Java

Jun 12, 2020

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Why is processing a sorted array faster than processing an unsorted array in Java

Jun 11, 2020

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How to convert a String to an int in Java

Jun 10, 2020

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What are MVP and MVC and what is the difference between MVP and MVC

Jun 9, 2020

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What is a serialVersionUID and why should I use it in Java

Jun 8, 2020

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When to use LinkedList over ArrayList in Java

Jun 7, 2020

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What is the difference between StringBuilder and StringBuffer in Java

Jun 6, 2020

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How to avoid NullPointerException in Java

Jun 5, 2020

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How do I read / convert an InputStream into a String in Java

Jun 4, 2020

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How do I efficiently iterate over each entry in a Java Map

Jun 2, 2020

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What are the differences between a HashMap and a Hashtable in Java

Jun 1, 2020

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Java JDBC important interview questions

Apr 24, 2020

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What are available JDBC drivers and difference between them and when to use

Apr 23, 2020

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What are the steps to connect to a database using JDBC API

Apr 22, 2020

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What is statement, prepared statement and callable statement in JDBC and Why are they used

Apr 21, 2020

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What is transaction management and ACID properties in JDBC

Apr 20, 2020

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In Java, what is the best way to determine the size of an object

Feb 10, 2020

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How do I generate random integers within a specific range in Java

Feb 5, 2020

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What is the difference between public, protected, package-private and private in Java

Feb 3, 2020

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Does Java support default parameter values

Feb 1, 2020

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What is a Spring Bean Lifecycle

Jan 22, 2020

springboot interview

What is the difference between Spring, Spring Boot and Spring MVC

Jan 20, 2020

springboot interview

What are the modules of Spring framework

Jan 18, 2020

springboot interview

Java new features that needs to be at your finger tips

Jan 1, 2020

java interview

What is the difference between writing a property on application.yml or bootstrap.yml in spring boot

Jan 12, 2019

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How to add context path to Spring Boot application

Jan 11, 2019

java interview springboot

How to set active profile and config location from command line in spring boot

Jan 8, 2019

java interview springboot

How does the Java 'for each' loop work

Jan 8, 2019

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Twitter Bootstrap Development Introduction

Jan 7, 2019

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SSL Configuration in Apache MINA Server

Jan 6, 2019

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An Introduction to Apache Mina Server

Jan 5, 2019

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Tomcat Performance Tuning in Production Server

Jan 4, 2019

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MySQL Backup/Restore in Windows, Linux and using Java Program

Jan 3, 2019

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Apache Mina - Simple Client/Server Application

Jan 2, 2019

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Float, Double and BigDecimal with Financial Calculation

Jan 1, 2019

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Convert MySQL database from MyISAM to InnoDB

Dec 30, 2018

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What is the difference between Hashtable and ConcurrentHashMap in Java

Dec 29, 2018

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What is CLASSPATH in Java

Dec 28, 2018

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What is connection pooling in Java

Dec 27, 2018

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What is the best way to store passwords in Java

Dec 26, 2018

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What is Marker Interface in Java

Dec 25, 2018

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Why String is Immutable or Final in Java

Dec 25, 2018

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What is SubString and Memory Leak in Java

Dec 24, 2018

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What is Encoding and Decoding in Java

Dec 23, 2018

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What are Maven Plugins

Dec 22, 2018

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What is a Maven Repository

Dec 21, 2018

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What is POM (Project Object Model) And Pom.Xml in Maven

Dec 20, 2018

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What is Hibernate Interceptor in Java Application Development

Dec 19, 2018

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How to publish your local web server to internet without any port forwarding

Dec 18, 2018

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What are Primitive and Wrapper Classes in Java

Dec 17, 2018

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What is classloading Mechanism in Java

Dec 16, 2018

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What is Singleton Design Pattern in Java

Dec 15, 2018

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Servlet and its working

Dec 14, 2018

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How an AJAX Request works

Dec 13, 2018

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What is HTTP/2 Protocol

Dec 13, 2018

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Java IO - Interview Questions

Dec 12, 2018

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Java 8 Features

Dec 10, 2018

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Introduction to Java Thread Profiling

Dec 9, 2018

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Advanced Java Web Interview Questions And Answers

Dec 8, 2018

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New Features in Java 9

Dec 7, 2018

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Important JDBC Interview questions and answers for Java Developer interview

Dec 6, 2018

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Important Java 8 Interview Questions

Dec 5, 2018

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The difference between the Runnable and Callable interfaces in Java

Dec 4, 2018

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What are the effects of exceptions on performance in Java

Dec 2, 2018

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What is the difference between “implements Runnable” vs “extends Thread” in Java

Dec 1, 2018

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What are the most frequent concurrency issues encounter in Java

Nov 30, 2018

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How to avoid synchronized(this) in Java

Nov 29, 2018

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How does synchronized work in Java

Nov 28, 2018

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How to use threads and recursion in Java to print Fibonacci numbers

Nov 27, 2018

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How do you kill a Thread in Java

Nov 26, 2018

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What is mutex and semaphore in Java and its differences

Nov 25, 2018

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Are Synchronized Methods Slower In Single Threaded Applications in Java

Nov 24, 2018

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Is it possible to use Object.wait(millisec) to simulate sleep in Java Threads

Nov 22, 2018

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What is the difference between Executors.newCachedThreadPool() and Executors.newFixedThreadPool() in Java MultiThreading

Nov 21, 2018

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WAP to Concatenate a given string to the end of another string in Java

Apr 1, 2015

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