Gold Coast IT Solutions 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