C2d Software Java Developer Interview Questions and Answers

Java Developer interview questions covering array list, linkedlist, hashmap, synchronization, abstract vs interface, singleton class, Spring framework, database configuration, and Java 8 features.

• ArrayList and LinkedList differ in terms of implementation, performance, and usage

• HashMap uses hashing to store and retrieve key-value pairs

• Synchronized is used to ensure thread safety and prevent race conditions

• Abstract class...read more

Work life balance is important to me and my employer supports it through flexible schedules and remote work options.

• My employer offers flexible schedules to accommodate personal needs

• Remote work options are available for certain roles

• I prioritize my workload and manage my time effectively to maintain balance

• I make time for hobbies and activities outside of work to recharge

• I communicate openly with my team and manager a

JVM stands for Java Virtual Machine. It is an abstract machine that enables a computer to run Java programs.

• JVM is responsible for interpreting the compiled Java code and executing it on the computer.

• It provides a platform-independent environment for Java programs to run on different operating systems.

• JVM has various components like class loader, bytecode verifier, and execution engine.

• Examples of JVM-based languages i

Byte code is a compiled code that can be executed on any platform with the help of a virtual machine.

• Byte code is an intermediate code that is generated by a compiler.

• It is platform-independent and can be executed on any platform with the help of a virtual machine.

• Examples of virtual machines include Java Virtual Machine (JVM) and .NET Common Language Runtime (CLR).

Interview questions for Java Developer

• JVM is a virtual machine that executes Java bytecode

• OOPS is a programming paradigm based on objects and classes

• SQL queries are used to retrieve data from a database

• REST API is a web service that uses HTTP requests to access and manipulate data

• Sorting an ArrayList can be done using Collections.sort() method

• Known sorting algorithms include Bubble Sort, Quick Sort, and Merge Sort