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03: 9 Core Java Concepts you can’t afford to not know

Q1. How will you go about explaining the following Java concepts to a beginner who is starting to learn Java? 1. Process Vs Threads 2. … Read more ›...

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04: Top 10 most common Core Java beginner mistakes

Mistake #1: Using floating point data types like float or double for monetary calculations. This can lead to rounding issues. In the above code,… Read more ›...

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17 Java getting started interview questions and answers

These 17 beginner Java interview questions & answers are not only for the entry level job interviews, but also get a good grasp of the beginner level Java concepts.

Q1.

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Java Compile-time Vs Run-time Interview Q&As

During development and design, one needs to think in terms of compile-time, run-time, and build-time.

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800+ Java Interview Q&As

16+ Java Key Areas Interview Q&As
Key Area - Going places
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(7)
Key Area - Design Concepts
(7)
Key Area - Judging Experience
(26)
Key Area - Best Practices
(6)
Key Area - Concurrency Mgmt
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Key Area - CI/CD & DevOps
(7)
Key Area - Debugging
Key Area - Debug Hibernate
(3)
Key Area - Debug Java
(11)
Key Area - Debug JEE
(5)
Key Area - Debug Spark
(4)
Key Area - Debug Spring
(2)
Key Area - Design Patterns
Key Area - GoF Design
(8)
Key Area - JEE Design
(3)
Key Area - Exception Handling
(4)
Key Area - Memory Mgmt
(9)
Key Area - Performance
(13)
Key Area - Scalability
(3)
Key Area - SDLC
(7)
Key Area - Security
(18)
Key Area - Productivity Tools
(23)
Key Area - Transaction Mgmt
(6)
Key Area - QoS & SLAs
(8)
150+ Java Architect interview FAQs
Architecture - Patterns
(10)
Architecture - How to
(9)
Architecture - AWS
(8)
Architecture - Distributed
(7)
Architecture - Microservices
(6)
Architecture - QoS
(1)
Architecture - ERD
(1)
Architecture - ETL
(2)
Architecture - Low Latency
(6)
Architecture - UML
(1)
400+ Java must-know Interview FAQs
300+ Java Interview FAQs
Java FAQs - 01: Prepared?
(2)
Java FAQs - 02: Ice Breaker
(6)
Java FAQs - 03: Core Java
(13)
Java FAQs - 04: OOP & FP
(4)
Java FAQs - 05: JEE
(12)
Java FAQs - 06: Spring
(8)
Java FAQs - 07: Hibernate
(4)
Java FAQs - 08: Web Services
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Java FAQs - 09: Microservices
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Java FAQs - 10: Messaging
(2)
Java FAQs - 11: Architecture
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Java FAQs - 12: RDBMS
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Java FAQs - 13: SQL
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Java FAQs - 14: Code Quality
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Java FAQs - 15: Key Areas
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Java FAQs - 16: UML
(1)
Java FAQs - 17: GIT
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Java FAQs - 18: Unix
(3)
Java FAQs - 19: DevOps
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Java FAQs - 20: AWS
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Java FAQs - 21: Maven
(1)
Java FAQs - 22: Regex
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Java FAQs - 23: JSON & XML
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Java FAQs - 24: JMeter
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80+ Java Code Quality Q&As
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Code Quality - FAQs
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Code Quality – Testing DAOs
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Code Quality – JUnit Spring
(6)
Code Quality – JUnit Web
(2)
Code Quality - Spring TXN
(2)
Java coding interview Q&As
Coding - Can you write code?
(22)
Coding - Complete the code
(13)
Coding - Converting from A to B
(6)
Coding - Designing your classes
(9)
Coding - Data Structures
Coding - Arrays
(2)
Coding - Big O notation
(2)
Coding - Graph Structure
(2)
Coding - LinkedList Structure
(2)
Coding - Map Structure
(1)
Coding - Pointer Algorithms
(3)
Coding - Queue Structure
(1)
Coding - Searching Algo
(1)
Coding - Sorting Algo
(4)
Coding - Stack Structure
(1)
Coding - Tree structure
(14)
Coding - Data Which & Why
(2)
Coding - Passing the unit tests
(5)
Coding - What is wrong?
(10)
Coding - Home Assignments
(5)
Coding - Written Test Core Java
(4)
Coding - Written Test JEE
(1)
800+ Java Interview Q&As
300+ Core Java Interview Q&As
Core Java - Overview
(4)
Core Java - Data types
(9)
Core Java - Constructors
(1)
Core Java - Reserved Key Words
(2)
Core Java - Classes
(3)
Core Java - Objects
(7)
Core Java - OOP
(10)
Core Java - GC
(2)
Core Java - Generics
(5)
Core Java - FP
(12)
Core Java - OOP to FP
(9)
Core Java - I/O
(8)
Core Java - Multithreading
(15)
Core Java - Data Structures
(5)
Core Java - Annotations
(2)
Core Java - AOP
(1)
Core Java - Other
(4)
Core Java - Collection API
(13)
Core Java - Differences X & Y
(5)
Core Java - Event Driven
(2)
Core Java - Exceptions
(1)
Core Java - Java 7
(2)
Core Java - Java 8
(24)
Core Java - JVM
(7)
Core Java - Reactive Program
(3)
Core Java - Swing & AWT
(2)
Core Java - Understanding
(4)
300+ Enterprise Java Interview Q&As
JEE - Overview
(2)
JEE - Web basics
(10)
JEE - Web Services
(11)
JEE - JPA
(2)
JEE - JTA
(1)
JEE - API Design
(2)
JEE - JDBC
(5)
JEE - Microservices
(8)
JEE - JMS
(5)
JEE - JMX
(3)
JEE - JNDI and LDAP
(2)
JEE - JSF
(2)
JEE - Other
(3)
Java frameworks interview Q&As
Framework - Hibernate Q&As
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Framework - Spring Core
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(7)
Framework - Spring Cloud
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Framework - Spring boot
(1)
Framework - Spring IO
(1)
Framework - Spring Config
(5)
Companion Tech Interview Q&As
Companion - Angular JS
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Companion - Domain Knowledge
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Companion - FIX
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Companion - Git & SVN
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Companion - Groovy
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Companion - JavaScript
(6)
Companion - JMeter
(2)
Companion - Maven
(3)
Companion - NoSQL
(3)
Companion - Regex
(2)
Companion - SQL
(18)
Companion - Unix
(16)
Companion - JSON
(2)
Companion - XML
(2)
Companion - XSD
(2)
Companion - YAML
(2)
Tutorials - Enterprise Java
TUT - ⏯ Starting with Java
(22)
TUT - Diagnosis
(2)
TUT - Akka
TUT - Akka Scala
(3)
TUT - Akka Java
(6)
TUT - AWS EC2
(4)
TUT - CI/CD Jenkins
(3)
TUT - Core Java
TUT - Debugging
(4)
TUT - Java 8
(4)
TUT - JSON and Java
(1)
TUT - Java Beginner
(1)
TUT - XML and Java
(8)
TUT - CSV and Java
(2)
TUT - Docker
(8)
TUT - JEE
TUT - Web & Web Services
(7)
TUT - REST Client
(1)
TUT - JSF
(1)
TUT - JDBC
(6)
TUT - FIX and Java
(3)
TUT - JAXB
(8)
TUT - JMX
(1)
TUT - JPA
(2)
TUT - MySQL
(1)
TUT - Scala
TUT - Scala Actors
(1)
TUT - Spring & Hibernate
TUT - Hibernate
(3)
TUT - Spring Basics
(10)
TUT - Spring batch
(3)
TUT - Hibernate & Spring
(5)
TUT - Spring Boot
(6)
TUT - Spring IO
(1)
TUT - Spring ORM
(2)
TUT - Spring other
(2)
TUT - Spring OXM
(2)
TUT - Spring Cloud
(9)
TUT - Tools
TUT - JMeter
(3)
TUT - Maven
(4)
TUT - Maven Assembly
(2)
TUT - Maven Profiles
(1)
TUT - Productivity Tools
(9)
TUT - Kubernetes
(3)
TUT - ⏯ Videos
TUT - ⏯ Starting with Java
(12)
TUT - ⏯ Spring Core
(1)
TUT - ⏯ Spring MVC
(6)
TUT - ⏯ JDBC, Hibernate
(6)
TUT - ⏯ Spring Boot
(2)
TUT - ⏯ Angular with Spring
(1)
TUT - ⏯ Q&As
(2)
TUT - Other
TUT - SQL
(3)
TUT - Drools
(5)
TUT - Apache POI
(3)
TUT - DOS
(2)
TUT - Dozer
(2)
TUT - ESB
(1)
TUT - Groovy
(3)
TUT - Jasper Reports
(4)
TUT - Logging and auditing
(6)
TUT - Metrics
(2)
TUT - Orika Mapping
(2)
TUT - Pentaho Kettle ETL
(4)
TUT - Unix
(7)
TUT - Webspeher MQ
(3)
TUT - YAML
(1)
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