why java is preferred? whats the benefit of functional programming and why introduced in java. what are wrapper classes, fibonaaci series , whats the use of join? what is threadinterrupted exception ? how hashmap works internally, why springbbot is helpful in development, how to make a class immutable, what is try with resource ? what is generics and benefits of it.. what is serialization and how serialized objects transfered ?

Question

Accepted Answer

Answers to various technical questions related to Java programming.

Java is preferred for its platform independence, object-oriented nature, and vast community support.
Functional programming in Java allows for more concise and readable code, and better support for parallel processing.
Wrapper classes are used to convert primitive data types into objects, and vice versa.
Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
Join is a method used to wait for a thread to complete its execution.
ThreadInterrupted exception is thrown when a thread is interrupted while it is waiting, sleeping, or performing a blocking I/O operation.
HashMap works by storing key-value pairs in an array, and using a hash function to map the key to an index in the array.
Spring Boot is helpful in development as it provides a framework for building web applications quickly and easily.
To make a class immutable, make all fields private and final, and do not provide any setters.
Try with resources is a feature introduced in Java 7 that automatically closes resources such as files, streams, and sockets after they are used.
Generics allow for type-safe programming, and enable the creation of reusable code that can work with different data types.
Serialization is the process of converting an object into a stream of bytes, which can then be transferred over a network or stored in a file.

Top DXC Technology Senior Software Engineer interview questions & answers

Popular interview questions of Senior Software Engineer

Top HR questions asked in DXC Technology Senior Software Engineer