Codewalla Interview Questions and Answers

Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.

Q1. Explain OOPs w.r.t Java
Ans. 
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
• OOPs stands for Object-Oriented Programming System

• Java is a class-based OOPs language

• Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs

• Objects have state and behavior

• Java supports interfaces, which allow for multiple inheritance

• Example: A car can be represented as an object wit...read more
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Q2. Explain about the projects that you have worked on
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Q3. Explain how Java solves machine dependency of code execution
Ans. 
Java solves machine dependency by using bytecode and virtual machine.
• Java code is compiled into bytecode which is platform-independent

• The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific

• JVM translates bytecode into machine code for the specific platform

• This allows Java code to run on any platform with a JVM installed

• Example: A Java program compiled on Windows can run on Linux or Mac as
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Q1. Why should we hire you?
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Q2. Tell me about yourself.
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Numerical ability and logical reasoning followed by some coding mcqs

Q1. Print 1 to 100 without for loop
Ans. 
Printing 1 to 100 without for loop
• Use recursion to print numbers from 1 to 99

• Print 100 outside the recursion

• Use a base case to stop recursion at 100
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Simple aptitude test

Q1. General questions as per your cv
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It was a basic aptitude test.

Q1. Interview was fine. Mostly asked about my final year project.
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Q1. Basic questions of java.
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Q1. Intro and other hr related questions.
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English is the main focussed part

Q1. Basic introduction and project based questions.
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It's totally based on Basic understanding of concepts such as Linear arrangement, circular arrangement، blood relation, direction sense, ratio proportion, time, speed, distance

Q1. It's based on OOPS Concepts,
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Q2. Strength and weaknesses
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Q3. About yourself, about educational background, why should we hire you
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