Interview
How to Pass GraphQL Interview Questions
Learn how to pass GraphQL interview questions with confidence by understanding key concepts and practicing common questions.
Interview Questions for Java 8
Interview Questions for Java 8 What new features were introduced in Java 8 and JDK 8? What is a “lambda”? What is the structure and unique characteristics of using a lambda expression? What variables can lambda expressions access? How can you sort a list of strings using a lambda expression? What is a “method reference”? What types of method references do you know? Explain the expression System.out::println. What are “functional interfaces”?
Interview Questions
Interview Questions OOP What is OOP? Name the main principles of OOP. What is _“encapsulation”? What is _“inheritance”? What is _“polymorphism”? What is _“abstraction”? What does “message passing” represent? Describe the basic concepts of OOP: “class”, “object”, “interface”. What are the advantages and disadvantages of the object-oriented approach in programming? What do the expressions “is” and “has” imply in the context of OOP principles? What is the difference between composition and aggregation?
Java Concurrency Interview Questions
Interview Questions Multithreading Tell us about the Java memory model? What is “thread safety”? What is the difference between “concurrency” and “parallelism”? What is “cooperative multitasking”? What type of multitasking does Java use? What is the reasoning behind this choice? What are ordering, as-if-serial semantics, sequential consistency, visibility, atomicity, happens-before, mutual exclusion, safe publication? What is the difference between a process and a thread? What are “green threads,” and does Java have them?
Java Core Interview Questions
Interview Questions Java Core What are the differences between JRE, JVM, and JDK? What access modifiers exist? What does the final keyword indicate? What are the default values for uninitialized variables? What do you know about the main() function? What logical operations and operators do you know? What is the ternary conditional operator? What bitwise operations do you know? Where and for what is the abstract modifier used? Define the term “interface”.