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Cross Country Infotech
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I applied via Naukri.com and was interviewed in Jan 2023. There were 3 interview rounds.
I completed my B.E. in 2015.
I completed my B.E. in 2015.
I graduated with a Bachelor's degree in Engineering in 2015.
My B.E. was completed in 2015.
I completed my 12th in the year 2010.
I completed my 12th in 2010.
I finished my 12th grade in 2010.
My 12th grade was completed in 2010.
I took a year gap to gain practical experience and enhance my skills.
To gain practical experience and enhance my skills
To explore different technologies and frameworks
To work on personal projects and contribute to open-source projects
To attend workshops, seminars, and training programs
To take up internships or freelance projects
I completed my graduation in the year 2015.
I completed my graduation in 2015.
I graduated in the year 2015.
My graduation was completed in 2015.
Java certification is not mandatory for a Java Developer role.
Certification is not a measure of practical skills and experience.
Experience and skills are more important than certification.
Certification can be helpful in some cases, but not mandatory.
Certification can be expensive and time-consuming.
Employers may value certification differently.
Examples of Java certifications: Oracle Certified Professional Java SE 11 De
The four pillars of OOPS are Abstraction, Encapsulation, Inheritance, and Polymorphism.
Abstraction: Hiding implementation details and showing only necessary information.
Encapsulation: Binding data and methods together to protect data from outside interference.
Inheritance: Creating new classes from existing ones, inheriting properties and methods.
Polymorphism: Ability of objects to take on multiple forms or behaviors.
Polymorphism is when an object can take on multiple forms and behave differently based on the context.
A car can be a vehicle, but it can also be a sports car or a family car, each with different behaviors.
A shape can be a square, rectangle, or triangle, each with different methods for calculating area and perimeter.
A media player can play different types of media, such as audio or video, each with different playback co
Abstract class can have implementation while interface cannot. A class can implement multiple interfaces but can only extend one abstract class.
Abstract class can have constructors while interface cannot.
Abstract class can have instance variables while interface cannot.
Abstract class can have non-abstract methods while interface can only have abstract methods.
A class can implement multiple interfaces but can only exten...
Yes, Java supports multi level inheritance.
Multi level inheritance is the process of inheriting a class from another derived class.
It helps in creating a hierarchy of classes with each level inheriting properties from the previous level.
For example, class C can inherit from class B, which in turn inherits from class A.
Java does not support multiple inheritance, where a class can inherit from multiple classes at the sam
Composition is a way to combine objects to create complex structures, while inheritance is a way to create new classes based on existing ones.
Composition is a 'has-a' relationship, where an object contains other objects as its parts.
Inheritance is an 'is-a' relationship, where a subclass inherits properties and behaviors from its superclass.
Composition allows for greater flexibility and modularity in design, as objects...
Exception handling is the process of handling errors and exceptions that occur during program execution.
Exceptions are objects that represent errors or exceptional situations that occur during program execution.
Exception handling involves catching and handling these exceptions to prevent program crashes.
Java provides try-catch-finally blocks for handling exceptions.
Examples of exceptions include NullPointerException, A...
throw is used to explicitly throw an exception while throws is used to declare an exception that a method may throw.
throw is used within a method to throw an exception when a certain condition is met
throws is used in the method signature to declare the exceptions that the method may throw
throw is followed by an instance of an exception class while throws is followed by the name of the exception class
throw is used to ha...
Yes, we can have multiple try blocks in Java.
Multiple try blocks can be used to handle different exceptions separately.
Each try block must have at least one catch or finally block.
Nested try blocks can also be used.
Example: try { //code } catch (Exception e) { //code } try { //code } catch (IOException e) { //code }
Example of nested try blocks: try { try { //code } catch (Exception e) { //code } } catch (Exception e) {
Memory is allocated when an instance of a class is created.
Memory allocation happens when an object is created using the 'new' keyword.
Static variables are allocated memory when the class is loaded.
Memory is released when the object is no longer referenced or when the program terminates.
A stack is a data structure that follows the Last In First Out (LIFO) principle.
Elements are added and removed from the top of the stack.
Push() adds an element to the top of the stack.
Pop() removes the top element from the stack.
Peek() returns the top element without removing it.
Used in programming for function calls, expression evaluation, and memory management.
A queue is a data structure that follows the FIFO (First In First Out) principle.
Elements are added to the back of the queue and removed from the front.
Common operations include enqueue (add to back) and dequeue (remove from front).
Examples include a line of people waiting for a movie or a printer queue.
Java provides the Queue interface and its implementations like LinkedList and PriorityQueue.
Errors are unrecoverable, while exceptions are recoverable.
Errors are caused by the environment in which the application is running, while exceptions are caused by the application itself.
Errors cannot be handled by the application, while exceptions can be handled using try-catch blocks.
Examples of errors include OutOfMemoryError and StackOverflowError, while examples of exceptions include NullPointerException and Array
We can use composition, aggregation, or association to connect two classes.
Composition is a strong form of aggregation where the lifetime of the contained object is controlled by the container object.
Aggregation is a weaker form of composition where the contained object has an independent lifecycle.
Association is a relationship between two classes where one class uses the functionality of another class.
Examples of asso...
Access modifiers in Java are used to set the accessibility of classes, methods, and variables.
There are four types of access modifiers in Java: public, private, protected, and default.
Public: accessible from anywhere in the program.
Private: accessible only within the same class.
Protected: accessible within the same class, same package, and subclasses.
Default: accessible within the same package only.
protected is a Java access modifier that allows access within the same package and subclasses.
Protected members can be accessed within the same package and subclasses.
It is used to provide encapsulation and prevent direct access from outside the class.
Protected members can be accessed using the dot operator.
Example: protected int num; can be accessed in a subclass using obj.num;
No, subclass cannot access private methods of parent class.
Private methods are only accessible within the same class where they are defined.
Subclasses can access protected and public methods of parent class.
Private methods can be accessed indirectly through public or protected methods of parent class.
No, subclass cannot inherit properties of parent class if parent class is not loaded.
In order for a subclass to inherit properties of a parent class, the parent class must be loaded.
If the parent class is not loaded, the subclass will not have access to its properties.
This is because inheritance is a compile-time concept and requires the parent class to be present during compilation.
Attempting to access properties of a...
Yes, a class can be private in Java.
A private class can only be accessed within the same outer class.
It cannot be accessed from outside the class or even from subclasses.
Private classes are often used for implementation details that should not be exposed to other classes.
Example: private class Node in a LinkedList implementation.
Collections are objects that group multiple elements into a single unit.
Collections are used to store, retrieve, manipulate and communicate aggregate data.
Java provides a set of interfaces and classes that implement various types of collections.
Examples of collections include List, Set, Map, Queue, etc.
Collections can be used to improve code readability, reusability, and performance.
Collections are used to store and manipulate groups of objects in Java. There are three main types of collections.
The three main types of collections are List, Set, and Map.
List is an ordered collection that allows duplicates. Example: ArrayList.
Set is an unordered collection that does not allow duplicates. Example: HashSet.
Map is a collection that maps keys to values and does not allow duplicate keys. Example: HashMap
Arrays are fixed in size and stored in stack memory, while heap is dynamic and stored in heap memory.
Arrays are declared with a fixed size, while heap can grow or shrink dynamically.
Arrays are stored in stack memory, while heap is stored in heap memory.
Arrays can only store elements of the same data type, while heap can store objects of different types.
Examples of arrays include int[], char[], and String[], while examp...
No, Set does not allow duplicates.
Set is a collection that does not allow duplicates.
If you try to add a duplicate element to a Set, it will not be added.
You can use a List if you need to allow duplicates.
Yes, duplicates can be added to an array.
Arrays in Java can contain duplicate elements.
Duplicate elements can be added to an array using the add() method of ArrayList class.
For example, int[] arr = {1, 2, 3, 3, 4}; or ArrayList<Integer> list = new ArrayList<>(Arrays.asList(1, 2, 3, 3, 4));
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I applied via Walk-in and was interviewed before Mar 2021. There were 3 interview rounds.
Aptitude test
Current affairs
I applied via Naukri.com and was interviewed before Jan 2021. There was 1 interview round.
I applied via Campus Placement and was interviewed in Sep 2022. There were 3 interview rounds.
One hour aptitude test, after clearing that, some basic coding questions were unlocked.
This one was face to face. Basically, the approach to the question was seeked by the HRs rather than the correct answer only.
I expect a competitive salary based on my skills, experience, and the market rate for software developers.
Research the average salary range for software developers in your location and industry.
Consider your level of experience, education, and any specialized skills you possess.
Factor in the company's size, reputation, and financial stability.
Be prepared to negotiate and discuss benefits and perks in addition to salary...
I applied via Company Website and was interviewed in Apr 2023. There were 2 interview rounds.
A zero coupon bond is a bond that pays no interest and is sold at a discount to its face value.
Zero coupon bonds are also known as discount bonds.
Investors buy these bonds at a price lower than their face value and receive the full face value at maturity.
The difference between the purchase price and the face value is the investor's return.
Zero coupon bonds are often used for long-term investments, such as retirement sa...
Corporate actions are events initiated by a company that can affect its stock price and shareholders. They are recorded in books through various accounting entries.
Corporate actions include stock splits, dividends, mergers, acquisitions, and spin-offs.
These actions are recorded in books through journal entries and adjustments to accounts such as retained earnings and stockholders' equity.
For example, if a company decla...
I applied via Approached by Company
Joining tables with different joins in SQL
Use INNER JOIN to return rows when there is at least one match in both tables
Use LEFT JOIN to return all rows from the left table and the matched rows from the right table
Use RIGHT JOIN to return all rows from the right table and the matched rows from the left table
Use FULL JOIN to return rows when there is a match in one of the tables
I applied via LinkedIn and was interviewed in Sep 2021. There was 1 interview round.
Spring is a framework for building Java applications, while Spring Boot is a tool for quickly creating Spring-based applications.
Spring provides a comprehensive framework for building Java applications, while Spring Boot is a tool that simplifies and accelerates the process of creating Spring-based applications.
Spring requires more configuration and setup, while Spring Boot provides a pre-configured environment that re...
A program to check if two strings are anagrams of each other.
Create two character arrays from the input strings
Sort the arrays
Compare the sorted arrays to check if they are equal
Using Streams API to filter and map an array of strings
Create a stream from the array using Arrays.stream()
Use filter() to select elements that meet a certain condition
Use map() to transform each element into a new value
Use toArray() to convert the stream back into an array
REST API is a web service that uses HTTP requests to access and manipulate data.
REST stands for Representational State Transfer
It is an architectural style for building web services
It uses HTTP methods like GET, POST, PUT, DELETE to perform operations on resources
It is stateless and can be cached
It returns data in various formats like JSON, XML, etc.
I applied via LinkedIn and was interviewed in Nov 2023. There were 3 interview rounds.
Mcq + dsa JavaScript questions
Print unique numbers in list
Iterate through the list and store each number in a set to keep track of unique numbers
Print out the numbers in the set to display the unique numbers
Some of the top questions asked at the Cross Country Infotech Java Developer interview -
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