Advanced Java interview questions and answers 1. What is the difference between an array and a vector?Hide Answer An array groups data of the same primitive type and is static, while vectors can hold data of di
Q18. What are the performance characteristics of ArrayList and LinkedList for operations like insertion, deletion, and retrieval? ArrayList provides fast access to elements by index, making it efficient for random access operations. It internally uses a dynamic array that allows direct calculation of ...
Problem Statement - Given an array, We need to find all the possible sets of 2 elements whose sum is equal to the target sum. Solution: Given an array, lets say [10,-2,5,3,1,7,4] and given a target = 8 , We need to find all the possible 2 elements whose sum is equal to ...
Java Collections Framework is one of the core APIs of java programming language. It’s one of the important topics for java interview questions. Here I am listing some important java collections interview questions and answers to help you in the interview. This is directly coming from my 14+ ...
Uses a dynamic array to store elements. Uses a doubly-linked list to store elements. Better for storing and accessing data. Better for manipulating data (insertions, deletions). Slower for data manipulation as shifting is required. Faster for data manipulation without shifting. Implements only the...
Java Interview Questions - Prepare for your Java interviews with these essential Java interview questions and answers. Boost your confidence and ace your next job interview.
Context switching is the process where the CPU switches from one thread to another. It involves saving and loading thread states and adds some overhead. 9. What is a daemon thread in Java? Daemon threads are low-priority threads that run in the background. They do not prevent the JVM fro...
Programming with arrays in Java: 1.Write a program that reads an integer from the user, then creates an array of integers of that length. It then fills the array with integers read from the user. 2.In your program’s main class, define a ...
java.langpackage. It’s not a primitive data type likeintandlong. TheStringclass represents character strings.Stringis used in almost all Java applications.String String str=new("abc"str1= Copy There are several constructors available in theStringclass to get aStringfromchar array,byte array,St...
focus on including the most important features like whether there needs to be data storage, how to send notifications and how to manage users when they are offline and online. Be sure to talk through your design process so the hiring manager can answer questions and give feedback along the ...