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Java Programming Library calls and type conversion Basic Cheat Sheet
Jan 16, 2022
java
interview
Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
Jan 16, 2022
java
interview
Java Programming Anatomy of an if statement Cheat Sheet
Jan 15, 2022
java
interview
Java Programming Printing, Parsing command line arguments and Math Library Basic Cheat Sheet
Jan 14, 2022
java
interview
Java Programming Comparison operators, floating point numbers and Booleans Cheat Sheet
Jan 13, 2022
java
interview
Java Programming Integers, Declarations and assignment statements Cheat Sheet
Jan 12, 2022
java
interview
Java Programming Hello world cheat sheet
Jan 11, 2022
java
interview
How does ternary operator work in java
Jan 10, 2022
java
How to learn Java quick
Jan 9, 2022
java
What is Time Complexity
Jan 8, 2022
java
python
interview
What is the story behind Java
Jan 7, 2022
java
What is Dependency Inversion Principle in SOLID Design Principles of Object Oriented Programming
Jan 6, 2022
java
What are SOLID Design Principles in Object Oriented Programming Java
Jan 5, 2022
java
What is Single Responsibility Principle in SOLID Design Principles of Object Oriented Programming
Jan 4, 2022
java
What is Open-Closed Principle in SOLID Design Principles of Object Oriented Programming
Jan 3, 2022
java
What is Liskov Substitution Principle in SOLID Design Principles of Object Oriented Programming
Jan 2, 2022
java
What is Interface-Segregation Principle in SOLID Design Principles of Object Oriented Programming
Jan 1, 2022
java
Write a program to find Duplicate character in a String Java
Dec 21, 2021
java
interview
Log4J Vulnerability (Log4Shell) Explained - for Java developers
Dec 20, 2021
java
interview
What are WebSockets and How is it different from HTTP
Dec 19, 2021
java
interview
Is Oracle JDK Free again - for Java developers
Dec 18, 2021
java
interview
What is Web 3.0 Blockchain, Its building blocks, and Evolution of the Internet
Dec 17, 2021
java
interview
How to fetch top 10 trending hashtags from Twitter in India using twitter4j
Dec 16, 2021
java
interview
Difference between Map and Flat Map
Dec 8, 2021
java
interview
How to find a file recursively in Java
Nov 12, 2021
java
interview
How to find age using date of birth in Java
Nov 11, 2021
java
interview
How to get the width and height of a string in Java
Nov 10, 2021
java
interview
How to convert date in to yyyy-MM-dd Format in Java
Nov 9, 2021
java
interview
How to do system design for a Movie Ticket Booking System like bookmyshow.com,fandango.com
Nov 1, 2021
java
interview
The Four Pillars of Object Oriented Programming
Oct 30, 2021
java
interview
python
What is Race Condition In MultiThreading Java
Oct 13, 2021
java
interview
What is Synchronized in Java MultiThreading
Oct 12, 2021
java
interview
How to print Thread numbers in MultiThreading Java
Oct 11, 2021
java
interview
What is join method used for in MultiThreading Java
Oct 10, 2021
java
interview
What is isAlive method used for in MultiThreading Java
Oct 9, 2021
java
interview
How to create and run multiple threads using for loop
Oct 8, 2021
java
interview
What is MultiThreading and How to create a thread in Java
Oct 7, 2021
java
interview
keytool error Keystore was tampered with, or password was incorrect, generate a Self Signed JKS Certificate using keytool
Oct 4, 2021
springboot
java
Top 15 Automated API Testing Tools | Lasted Update
Sep 25, 2021
python
java
Simple code Naming things and Naming Conventions
Sep 21, 2021
java
interview
Is Paying to Learn Java 'Playing the Fool'?
Sep 20, 2021
java
Introduction To Pragmatic Functional Java
Sep 19, 2021
java
What’s So Great About Java? Here Are Three Things!
Sep 18, 2021
java
interview
How to calculate Java Objects, Arrays, Primitives, and Complex Classes. Checking calculated size correctness using JProfiler.
Sep 17, 2021
java
interview
How to Convert DOCX to HTML in Java
Sep 16, 2021
java
interview
How to remove substring from String in Java
Sep 15, 2021
java
interview
Java virtual Machine(JVM) and its architecture
Sep 14, 2021
java
interview
Java Creator James Gosling Interview
Sep 12, 2021
java
Gang of Four design patterns, including class diagrams, explanations, usage info, and real world examples.
Sep 10, 2021
java
interview
Overview of key aspects of the Java language and references on the core library, commonly used tools, and Java 8 features.
Sep 9, 2021
java
interview
The Performance Impact of java.lang.System.getProperty()
Aug 26, 2021
java
interview
Can You Override Static Method in Java
Aug 25, 2021
java
interview
Does Java Support Pass by Value or Pass by Reference
Aug 24, 2021
java
interview
Difference between Factory and Abstract Factory Design Pattern in Java
Aug 23, 2021
java
interview
Why Java does not support Operator overloading
Aug 21, 2021
java
interview
Polymorphism, Overloading, and Overriding in Java and Object Oriented Programming
Aug 20, 2021
java
interview
What is Encapsulation in Java and OOP with Example
Aug 19, 2021
java
interview
What is Inheritance in Java with example - Object Oriented Programming
Aug 18, 2021
java
interview
What is Object in Java and Object Oriented Programming? Example Tutorial
Aug 17, 2021
java
interview
Difference between Inheritance and Composition in Java and Object Oriented Programming
Aug 16, 2021
java
interview
Recursion in Java with an Example
Aug 15, 2021
java
interview
Protect Your Code From Bugs An Overview of Five Static Analyzers for Java Code
Aug 14, 2021
java
Java Exception Design, what is a Java exception, and how to use Java Exceptions
Aug 13, 2021
java
interview
What Is Functional Programming?
Aug 10, 2021
java
OOPs Concepts in Java with Basic Examples
Aug 9, 2021
java
interview
Lambda Expressions in Java
Aug 8, 2021
java
Ten Things About Java 17 and Ten features to help justify a move from Java 8 to Java 17
Aug 7, 2021
java
interview
Object-oriented Programming vs. Functional Programming Which Is Better?
Aug 5, 2021
java
interview
What are the Java Best Practices for High performance Serialization
Aug 4, 2021
java
springboot
interview
Fetching a DTO With a To-Many Association
Aug 3, 2021
java
interview
Does getInstance() denote a singleton according the singleton pattern in Java
Aug 2, 2021
java
interview
What is a Race Condition
Aug 1, 2021
java
interview
Java Array Declaration – How to Initialize an Array in Java with Example Code
Jul 27, 2021
java
interview
Important keywords to refer before attending a Java interview
Jul 26, 2021
java
interview
How do you assert that a certain exception is thrown in JUnit 4 tests
Jul 25, 2021
java
interview
How to catch multiple Java exceptions in the same catch clause
Jul 24, 2021
java
interview
What are checked vs unchecked exceptions in Java
Jul 23, 2021
java
interview
Is it IllegalArgumentException or NullPointerException for a null parameter in Java
Jul 22, 2021
java
interview
What is the difference between the following ways of handling InterruptedException? What is the best way to do it in Java
Jul 21, 2021
java
interview
How to find the minimum or least value in an Integer List using Java 8
Jul 20, 2021
java
interview
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
java
interview
What are the examples of GoF Design Patterns in Java's core libraries
Jul 17, 2021
java
interview
How to know which Java thread is hogging the CPU
Jul 17, 2021
java
interview
How many threads can a Java VM support
Jul 16, 2021
java
interview
What are Semaphore problems in Java with the Dining Philosophers
Jul 15, 2021
java
interview
What are important Threading Techniques & Concepts in Java
Jul 14, 2021
java
interview
Is it possible view/pause/kill a particular thread from a different java program running on the same JVM
Jul 13, 2021
java
interview
How to make your collections thread-safe?
Jul 12, 2021
java
interview
What are the best naming conventions for threads in Java
Jul 11, 2021
java
interview
In Java, do I need to declare my collection synchronized if it's read-only
Jul 10, 2021
java
interview
Heap and Stack Memory Errors in Java
Jul 10, 2021
java
Java 11 Features
Jul 10, 2021
java
interview
Pass a Parameter to All JVMs in A Machine at The Same Time
Jul 9, 2021
java
Synchronizing on String objects in Java
Jul 9, 2021
java
interview
How many threads should I use in my Java program
Jul 8, 2021
java
interview
What is the volatile keyword useful for in Java.
Jul 7, 2021
java
interview
How to implement simple threading with a fixed number of worker Threads
Jul 6, 2021
java
interview
What is the difference between notify() and notifyAll() in Threads.
Jul 5, 2021
java
interview
What would make a single task executor stop processing tasks in Java Threads.
Jul 4, 2021
java
interview
How can you ensure a block of code can not be interrupted by any other Thread in Java
Jul 3, 2021
java
interview
How to test methods that call System.exit() in Java
Jul 3, 2021
java
interview
How are Java Thread priorities translated to an OS thread priority
Jul 2, 2021
java
interview
How to parse logs written by multiple Threads
Jul 1, 2021
java
interview
What are the benefits of Performance Optimization in Java
Jun 30, 2021
java
interview
What is Garbage Collection Performance Tuning in Java
Jun 29, 2021
java
interview
What are the best Coding Practices to be followed while writing Java code in order to avoid performance issues
Jun 28, 2021
java
interview
How to wait for a number of threads to complete in Java
Jun 6, 2021
java
interview
Which concurrent Queue implementation, should I use it in Java
Jun 5, 2021
java
interview
What is the difference between a synchronized method and synchronized block in Java
Jun 4, 2021
java
interview
How to make an ArrayList Read Only in Java
Jun 3, 2021
java
interview
Core java interview questions and answers
May 20, 2021
java
interview
How Cache data to improve performance
Apr 27, 2021
java
interview
What is a Java bean
Apr 26, 2021
java
interview
What is abstraction in Java
Apr 25, 2021
java
interview
Real time example of a singleton design pattern in Java
Apr 24, 2021
java
interview
What is final keyword in java
Apr 20, 2021
java
interview
What is Instance Initializer block in Java
Apr 20, 2021
java
interview
What is instanceof operator in Java
Apr 20, 2021
java
J2ee
interview
How to fetch multiple host names from config file management in Jenkins pipeline groovy script
Apr 19, 2021
java
DevOps
maven
What is super keyword in java
Apr 18, 2021
java
interview
What is Covariant Return Type in java
Apr 17, 2021
java
interview
What is method overriding in Java
Apr 17, 2021
java
J2ee
interview
What is method overloading in Java
Apr 15, 2021
java
interview
What is Polymorphism in Java
Apr 14, 2021
java
interview
How to Encrypt and Decrypt a file using CryptoJS AES encryption and Java AES decryption
Apr 13, 2021
java
J2ee
AES256
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
java
interview
AES256 Exception in thread "main" java.security.InvalidKeyException Illegal key size or default parameters in Java
Apr 12, 2021
java
J2ee
Listagg function overflow error ORA-01489 in Java
Apr 12, 2021
java
oracle
J2ee
How to create a memory leak in Java
Jun 12, 2020
java
interview
Why is processing a sorted array faster than processing an unsorted array in Java
Jun 11, 2020
java
interview
How to convert a String to an int in Java
Jun 10, 2020
java
interview
What are MVP and MVC and what is the difference between MVP and MVC
Jun 9, 2020
java
interview
What is a serialVersionUID and why should I use it in Java
Jun 8, 2020
java
interview
When to use LinkedList over ArrayList in Java
Jun 7, 2020
java
interview
What is the difference between StringBuilder and StringBuffer in Java
Jun 6, 2020
java
interview
How to avoid NullPointerException in Java
Jun 5, 2020
java
interview
How do I read / convert an InputStream into a String in Java
Jun 4, 2020
java
interview
How do I efficiently iterate over each entry in a Java Map
Jun 2, 2020
java
interview
What are the differences between a HashMap and a Hashtable in Java
Jun 1, 2020
java
interview
Java JDBC important interview questions
Apr 24, 2020
java
interview
What are available JDBC drivers and difference between them and when to use
Apr 23, 2020
java
interview
What are the steps to connect to a database using JDBC API
Apr 22, 2020
java
interview
What is statement, prepared statement and callable statement in JDBC and Why are they used
Apr 21, 2020
java
interview
What is transaction management and ACID properties in JDBC
Apr 20, 2020
java
interview
In Java, what is the best way to determine the size of an object
Feb 10, 2020
java
interview
How do I generate random integers within a specific range in Java
Feb 5, 2020
java
interview
What is the difference between public, protected, package-private and private in Java
Feb 3, 2020
java
interview
Does Java support default parameter values
Feb 1, 2020
java
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
java
interview
springboot
How to add context path to Spring Boot application
Jan 11, 2019
java
interview
springboot
What is the best way of writing an integration test in Spring boot
Jan 10, 2019
springboot
java
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
java
interview
Why SpringBoot 2.2.2 Jackson serializer for custom pagination doesn't work
Jan 7, 2019
springboot
java
Twitter Bootstrap Development Introduction
Jan 7, 2019
java
interview
What is multiple spring ApplicationContext in Java
Jan 6, 2019
springboot
java
SSL Configuration in Apache MINA Server
Jan 6, 2019
java
interview
An Introduction to Apache Mina Server
Jan 5, 2019
java
interview
Tomcat Performance Tuning in Production Server
Jan 4, 2019
java
interview
MySQL Backup/Restore in Windows, Linux and using Java Program
Jan 3, 2019
java
interview
Apache Mina - Simple Client/Server Application
Jan 2, 2019
java
interview
Float, Double and BigDecimal with Financial Calculation
Jan 1, 2019
java
interview
Convert MySQL database from MyISAM to InnoDB
Dec 30, 2018
java
interview
What is the difference between Hashtable and ConcurrentHashMap in Java
Dec 29, 2018
java
interview
What is CLASSPATH in Java
Dec 28, 2018
java
interview
What is connection pooling in Java
Dec 27, 2018
java
interview
What is the best way to store passwords in Java
Dec 26, 2018
java
interview
What is Marker Interface in Java
Dec 25, 2018
java
interview
Why String is Immutable or Final in Java
Dec 25, 2018
java
interview
What is SubString and Memory Leak in Java
Dec 24, 2018
java
interview
What is Encoding and Decoding in Java
Dec 23, 2018
java
interview
What are Maven Plugins
Dec 22, 2018
java
interview
What is a Maven Repository
Dec 21, 2018
java
interview
What is POM (Project Object Model) And Pom.Xml in Maven
Dec 20, 2018
java
interview
What is Hibernate Interceptor in Java Application Development
Dec 19, 2018
java
interview
How to publish your local web server to internet without any port forwarding
Dec 18, 2018
java
interview
What are Primitive and Wrapper Classes in Java
Dec 17, 2018
java
interview
What is classloading Mechanism in Java
Dec 16, 2018
java
interview
What is Singleton Design Pattern in Java
Dec 15, 2018
java
interview
Servlet and its working
Dec 14, 2018
java
interview
How an AJAX Request works
Dec 13, 2018
java
interview
What is HTTP/2 Protocol
Dec 13, 2018
java
interview
Java IO - Interview Questions
Dec 12, 2018
java
interview
Java 8 Features
Dec 10, 2018
java
interview
Introduction to Java Thread Profiling
Dec 9, 2018
java
interview
Advanced Java Web Interview Questions And Answers
Dec 8, 2018
java
interview
New Features in Java 9
Dec 7, 2018
java
interview
Important JDBC Interview questions and answers for Java Developer interview
Dec 6, 2018
java
interview
Important Java 8 Interview Questions
Dec 5, 2018
java
interview
The difference between the Runnable and Callable interfaces in Java
Dec 4, 2018
java
interview
What are the effects of exceptions on performance in Java
Dec 2, 2018
java
interview
What is the difference between “implements Runnable” vs “extends Thread” in Java
Dec 1, 2018
java
interview
What are the most frequent concurrency issues encounter in Java
Nov 30, 2018
java
interview
How to avoid synchronized(this) in Java
Nov 29, 2018
java
interview
How does synchronized work in Java
Nov 28, 2018
java
interview
How to use threads and recursion in Java to print Fibonacci numbers
Nov 27, 2018
java
interview
How do you kill a Thread in Java
Nov 26, 2018
java
interview
What is mutex and semaphore in Java and its differences
Nov 25, 2018
java
interview
Are Synchronized Methods Slower In Single Threaded Applications in Java
Nov 24, 2018
java
interview
Is it possible to use Object.wait(millisec) to simulate sleep in Java Threads
Nov 22, 2018
java
interview
What is the difference between Executors.newCachedThreadPool() and Executors.newFixedThreadPool() in Java MultiThreading
Nov 21, 2018
java
interview