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No, instances of abstract class cannot be created.
Abstract classes are incomplete and cannot be instantiated.
They are meant to be extended by subclasses that provide concrete implementations.
Abstract classes can have abstract methods that must be implemented by the subclass.
Example: abstract class Animal cannot be instantiated, but subclasses like Dog and Cat can be.
Java doesn't support pointers for safety and security reasons.
Java uses references instead of pointers to avoid memory leaks and null pointer exceptions.
Pointers can be used to access memory directly, which can be a security risk.
Java's garbage collector manages memory automatically, making pointers unnecessary.
Java's design philosophy prioritizes safety and security over low-level control.
Pointers can also make c...
Swapping numbers can be done using a temporary variable, arithmetic operations, or XOR bitwise operator.
Using a temporary variable: temp = a; a = b; b = temp;
Using arithmetic operations: a = a + b; b = a - b; a = a - b;
Using XOR bitwise operator: a = a ^ b; b = a ^ b; a = a ^ b;
Java is platform-independent due to its bytecode and virtual machine architecture.
Java code is compiled into bytecode, which can run on any platform with a Java Virtual Machine (JVM).
JVM acts as an interpreter, translating bytecode into machine code specific to the platform it is running on.
This allows Java programs to be written once and run on any platform with a JVM installed.
For example, a Java program written...
Inheritance is a mechanism where a new class is derived from an existing class. Polymorphism is the ability of an object to take on many forms.
Inheritance allows for code reuse and promotes a hierarchical organization of code.
Polymorphism allows for flexibility in code design and enables objects to be used in multiple contexts.
Example of inheritance: A class 'Car' can be inherited by a class 'SUV' which adds addit...
5 basic concepts of OOPs are encapsulation, inheritance, polymorphism, abstraction, and class.
Encapsulation: bundling of data and methods that manipulate the data within a single unit.
Inheritance: ability of a class to inherit properties and characteristics from its parent class.
Polymorphism: ability of objects to take on multiple forms or have multiple behaviors.
Abstraction: hiding of complex implementation detai...
The 5 basic concepts of OOP are encapsulation, inheritance, polymorphism, abstraction, and class.
Encapsulation: bundling of data and methods that manipulate the data within a single unit.
Inheritance: creating new classes from existing ones, inheriting their properties and methods.
Polymorphism: ability of objects to take on multiple forms or behaviors.
Abstraction: hiding the complexity of a system and only showing ...
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows for code reuse and promotes a hierarchical organization of classes.
The existing class is called the superclass or parent class, while the new class is called the subclass or child class.
The subclass inherits all the properties and methods of the superclass, and can...
The 5 concepts of OOP are encapsulation, inheritance, polymorphism, abstraction, and class.
Encapsulation: bundling of data and methods that manipulate the data within a single unit
Inheritance: ability of a class to inherit properties and characteristics from a parent class
Polymorphism: ability of objects to take on multiple forms or have multiple behaviors
Abstraction: hiding of complex implementation details and p...
DBMS is a software system to manage databases while RDBMS is a type of DBMS that stores data in tables with relations.
DBMS stands for Database Management System while RDBMS stands for Relational Database Management System.
DBMS can manage any type of database while RDBMS is specifically designed to manage relational databases.
DBMS does not enforce any specific data model while RDBMS enforces the relational data mod...
Aptitude test is based on quantitative apptitude, English and computer
Write a small code to reverse a string in an array of strings
Iterate through each string in the array
Use built-in functions or write a custom function to reverse each string
Store the reversed strings back in the array
Experienced Operations Executive with a proven track record of optimizing processes and driving efficiency.
Over 10 years of experience in operations management
Successfully implemented cost-saving initiatives resulting in 20% reduction in expenses
Led cross-functional teams to improve workflow and increase productivity
Strong analytical skills and ability to identify areas for improvement
Excellent communication and leader...
OOPS concepts refer to Object-Oriented Programming concepts which include inheritance, encapsulation, polymorphism, and abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class. Example: Parent class 'Animal' and child class 'Dog'.
Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class 'Car' with private variables and public methods.
Polym...
Exceptions are unexpected events that disrupt the normal flow of operations.
Exceptions are errors or unusual conditions that occur during the execution of a program.
They can be caused by various factors such as invalid input, hardware failures, or network issues.
Handling exceptions involves using try-catch blocks to catch and handle the errors gracefully.
Examples of exceptions include NullPointerException, ArrayIndexOu...
Let take x and y, x have 3 fruits and total ofc nd y is then how many fruits does y have?
Dynamic Operations Executive with a proven track record in optimizing processes and enhancing efficiency across various sectors.
Over 5 years of experience in operations management, focusing on process improvement.
Successfully led a project that reduced operational costs by 20% through lean methodologies.
Skilled in data analysis and using metrics to drive decision-making.
Collaborated with cross-functional teams to strea...
Logical Reasoning, work and Time
Experienced Operations Executive with a proven track record in optimizing processes and driving efficiency.
Over 10 years of experience in operations management
Successfully implemented cost-saving initiatives resulting in a 20% reduction in expenses
Led cross-functional teams to streamline workflows and improve productivity
Strong analytical skills and ability to identify areas for improvement
I would join this company because of its strong reputation in the industry, opportunities for growth, and innovative approach to operations.
Strong reputation in the industry
Opportunities for growth
Innovative approach to operations
Basic aptitude including English puzzle reasoning
I applied via Campus Placement
60mins , It was easy .
I applied via Walk-in and was interviewed in May 2024. There were 2 interview rounds.
Logical Reasoning and Scenarios
GDP growth and its impact
30 minutes asked about problem solving
I applied via Company Website and was interviewed in Aug 2023. There were 5 interview rounds.
Online Assessment round
I regularly use Python in my work as an Operations Executive.
Python is versatile and easy to learn, making it ideal for automating tasks and data analysis.
I use Python for scripting, data manipulation, and creating tools to streamline operations.
Some examples of Python libraries I frequently use are Pandas, NumPy, and Matplotlib.
I am proficient in 5 programming languages including Java, Python, C++, SQL, and JavaScript.
Java
Python
C++
SQL
JavaScript
Determine an individual skill
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The duration of Infosys Operations Executive interview process can vary, but typically it takes about less than 2 weeks to complete.
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