63 Moons Technologies Senior Software Developer Interview Questions and Answers

To compile all Java files inside a folder using Cmd, navigate to the folder and run 'javac *.java'

• Open Command Prompt and navigate to the folder containing the Java files

• Run the command 'javac *.java' to compile all Java files in the folder

• Check for any errors or warnings in the output

Hashmap is a data structure that stores key-value pairs. Concurrent Hashmap is a thread-safe version of Hashmap.

• Hashmap uses hashing to store and retrieve elements based on their keys.

• Concurrent Hashmap allows multiple threads to access and modify the map concurrently.

• Hashmap has a load factor that determines when the map needs to be resized.

• Concurrent Hashmap uses a technique called lock striping to allow concurrent a...read more

Deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release a resource.

• Deadlock occurs when two or more processes are stuck in a circular wait, where each process is waiting for a resource held by another process.

• Four necessary conditions for deadlock are mutual exclusion, hold and wait, no preemption, and circular wait.

• Example: Process A holds resource X a...read more

I have experience with various technologies including Java, Python, HTML/CSS, JavaScript, and SQL.

• Java

• Python

• HTML/CSS

• JavaScript

• SQL

I am looking for a change to explore new opportunities and challenges. My notice period is 30 days.

• Seeking new opportunities and challenges

• Want to learn and grow in a different environment

• Exploring better career prospects

• Seeking a company with a better work-life balance

• Notice period is 30 days

Joins are used in SQL to combine data from two or more tables based on a related column.

• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all rows from the left table and matching rows from the right table.

• Right join returns all rows from the right table and matching rows from the left table.

• Full outer join returns ...read more