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Zscaler Softech Lead Java Developer Interview Questions and Answers
Zscaler Softech Lead Java Developer Interview Experiences
1 interview found
Anonymous
I applied via LinkedIn and was interviewed in Sep 2023. There were 2 interview rounds.
(4 Questions)
- Q1. Technical round- what is your current salary
- Q2. Based on the current salary they use to ask questions
- Q3. Most of the questions will be theoretical
- Q4. Can you create an application without the help of google
- Ans.
Yes, I can create an application without the help of Google.
I have a strong understanding of Java programming language and its libraries
I have experience in developing applications without relying on external resources
I have a good grasp of software development principles and best practices
Interview Preparation Tips
Skills evaluated in this interview
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I appeared for an interview in Aug 2016.
Interview Preparation Tips
Experience: The questions were tricky. We were given a paragraph and after reading it, a statement was given to us and we were asked to say if it is true, false or cannot say. The structure of the statement put us into a a tough place. So practice of such kind of questions is necessary.
For data interpretation questions a good hand on basic statistical mathematics is needed. One has to be quick because of the time crunch. The questions were approachable
Round: Technical Interview
Experience: In this round my resume was scanned and I was required to speak about myself, my projects and explain certain areas of my resume. The interviewer picked up one of my basic project, surprisingly, and asked me to elaborate on it. He asked me how I can improve the project. And I had to write a code to make that change. Basically, one should have a good idea about the projects they've done/ mentioned in their resume. And know it in detail.
Few questions on data structures. Prepare well for coding type questions and data structures.
Round: Puzzle Interview
Experience: The interviewer asked me two puzzles. They were moderate level. And also luckily he was helpful whenever I got stuck.
Round: HR Interview
Experience: HR round was good. Basic questions like " tell me more about yourself", brief information about my past history, college life, extra curricular activities. In the end she asked me, "should we hire you?" And I lightly answered " why not!" So it was a good interview overall.
Skills: Coding Skills, Team Working Ability, Project management
College Name: Visvesvaraya National Institute Of Technology
Saurav Kumar
Interview Questionnaire
5 Questions
- Q1. SQL Querry
- Q2. Programming
- Q3. Projects
- Q4. Project
- Q5. HR Questions
Interview Preparation Tips
Experience: I was from civil branch so had the above listed sections for pen paper written test. We had to attempt any 2 of the first 3 and last two were cumpolsory (Same for mechanical branch also). For CS, IT, ECE and EEE there were only 2 sections - first was programming - 5 questions and second was situational based.
All the three sections consisted 5 questions in each sections. Questions were very easy and hardly a pen was needed to solve. Quants section consisted of questions on binary to decimal, pipes and cistern and number system. Verbal section consisted of a passage followed by 5 questions and Logical section consisted of 5 simple sequence and series questions.
In 4 th section, we were asked to write an algorithm/flowchart for a given scenarion with some contraints - opening a bank account.
Last section was situational based questions. We were asked to exoress our views in maximum of 100 words on what we would do in a given situation.
Tips: Skip vrbal part as there can be chance of getting wrong. Solve quants and logical as there would be 100% chance of being correct due to very easy questions.
In 4th section, draw flowchart/tree showing how you will proceed and what you think. Before proceeding further think like a layman person how he will fill the form and then decide how to write an algorithm so that even a layman can understand well how to proceed with that particular form. Show output screens, consider exceptions, find every possible combinations for the various options given in the problem.
For last question, try to be practical, brief, concise and to the point. Don't write anything in round about manner.
Above all, as this is pen paper test, write in a beautiful hand writting.
Duration: 45 minutes
Total Questions: 12
Round: Technical Interview
Experience: The technical interview was easy. The questions were straingh forward. Questions were based on projects that I had done. I had Informatics Practices (Java) in class 12 so I told interviewer about database management. I was asked to explain tables used in project and a SQL Querry which I failed to answer.
Then she asked me to write a program to determine which offer is better to invest if in one interest rate increases by 2 each year and the one in which it increases by 1. I quickly wrote it. She said to improve the DBMS part and applauded for the programming skills.
Tips: Be confident and true. They ask only what you say about yourself. Prepare well for SQL querries as they focus more on SQL. Also practice programming as one queston will be essentially on it. Don't try to learn all languages. Know only one but know well. For civil students, have one project that involves programming. Try to learn MATLAB programming during B.Tech. It will make a good impact.
Round: HR Interview
Experience: The HR round was very easy. HR was very friendly. I was asked to introduce myself and then he asked me to explain about my project which I had done in MATLAB. He then asked HR questions like why I wanted to join software industry, where I see myslef in 5 years, previous interview experiences.
Tips: Be cool and confident. If you made till HR round, the probability of being selected in 90%. For civil students, try to be familiar with programming languages and SQL. Also try to have some extra skills that make you different from others. Don't think civil engineers only build buildings and roads; there is a lot more for us to do. Its always good to stand away from crowd.
All the best!
General Tips: Have good command on basics of what learnt C++ or Java and MySQL in class 12. Try to have a project using any programming skill if you are from non CS/IT background as it will help you prove you interest in programming despite your branch. Knowing foreign language atleast till intermediate level will add stars to your extra skills.
Skill Tips: For civil and mechanical students, if you has C++ or Informatics Practices in class 12, be in touch with that knowledge. They test only basics. Familiarize yourself with OOPS and SQL querries.
Be confident with what you speak and speak in clear voice. If you don't know simply say no. Must attent the interview with a good explanations of questions asked about your weak skills.
Skills: Confidence, Programming Skills In Any Language Like C, Database Management
College Name: VIT Vellore
Motivation: Interest in programming.
Funny Moments: When HR asked where I see myself in 5 years I said that I see myself in Europe. To which he said that he is hiring for India and when I said that I am hired for India right now but not for 5 years. He smiled with the answer and wished me all the best.
I appeared for an interview in Aug 2017.
Interview Questionnaire
3 Questions
- Q1. Tell me something about yourself
- Ans.
I am a passionate software developer with experience in Java, Python, and web development.
Experienced in Java, Python, and web development
Passionate about coding and problem-solving
Strong communication and teamwork skills
Always eager to learn and adapt to new technologies
- Q2. Questions on data structures
- Q3. Questions on algorithms
Interview Preparation Tips
Experience: it took half-an-hour
Skills: Technical Skill, Technical Analysis, Speaking Skills
College Name: NIT Bhopal
I appeared for an interview before Mar 2021.
(6 Questions)
Round duration - 60 minutes
Round difficulty - Medium
The interviewer was really cool. He realized that I mostly work on java applications so he chose to ask me stuff related to that. He didn't want me to know the answer well but just wanted me to approach to it, maybe think more. He went through my resume back and forth and asked mostly about all my projects and their logic and how could I take them to the next level.
Tips: Be confident. Its okay not to know any answer, just try giving it a shot in the approach.
- Q1. What is the difference between an abstract class and an interface in Java?
- Ans.
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
Abstract class can have constructors, member variables, and methods with implementation.
Interface can only have abstract methods and constants.
A class can implement multiple interfaces but can only extend one abstract class.
Example: Abstract class - Animal with abstract method 'eat', Interface - Flyable with m
- Q2. What is the difference between 'final', 'finally', and 'finalize' in Java?
- Ans.
final is a keyword used to declare constants, finally is a block used in exception handling, and finalize is a method used for cleanup.
final is a keyword used to declare constants in Java, meaning the value cannot be changed once assigned. Example: final int x = 10;
finally is a block used in exception handling to ensure a piece of code is always executed, whether an exception is thrown or not. Example: try { // code } ...
- Q3. What is the difference between the private and final access modifiers in Java?
- Ans.
Private restricts access to the class itself, while final prevents inheritance and method overriding.
Private access modifier restricts access to the class itself, while final access modifier prevents inheritance and method overriding.
Private members are only accessible within the same class, while final classes cannot be extended and final methods cannot be overridden.
Example: private int num; - num can only be accesse...
- Q4. What are the steps for establishing a JDBC connection?
- Ans.
Establishing a JDBC connection involves loading the driver, creating a connection, creating a statement, executing queries, and handling exceptions.
Load the JDBC driver using Class.forName() method
Create a connection using DriverManager.getConnection() method
Create a statement using connection.createStatement() method
Execute queries using statement.executeQuery() method
Handle exceptions using try-catch blocks
- Q5. What is JSON?
- Ans.
JSON is a lightweight data interchange format used to store and transmit data between a server and a web application.
JSON stands for JavaScript Object Notation.
It is easy for humans to read and write, and easy for machines to parse and generate.
JSON is language-independent and can be used with any programming language.
Example: {"name": "John", "age": 30}
Example: [{"name": "Alice", "age": 25}, {"name": "Bob", "age": 35}
- Q6. What do you know about garbage collection in Java?
- Ans.
Garbage collection in Java is the process of automatically managing memory by deallocating objects that are no longer needed.
Garbage collection helps in preventing memory leaks by reclaiming memory used by objects that are no longer referenced.
Java uses a garbage collector to automatically manage memory, unlike languages like C++ where memory management is manual.
Garbage collection in Java can be triggered by calling S...
Round duration - 30 minutes
Round difficulty - Easy
I wouldn't say it went great but it was fine. I did not think I would clear it as for most of the questions the interviewer seemed disappointed and wanted more out of me.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Oracle Cerner
Harshal Khanderia
posted on 19 Aug 2016
Interview Questionnaire
19 Questions
- Q1. Introduce yourself
- Ans.
I am a software developer with experience in Java and Python.
Proficient in Java and Python programming languages
Experience in developing web applications using Spring framework
Familiarity with database management systems such as MySQL and MongoDB
- Q2. Tell me more about your achievements
- Ans.
I have achieved success in developing and implementing various software solutions.
Developed a web application that increased user engagement by 30%
Implemented a new feature that reduced system downtime by 50%
Created a mobile app that received 4.5-star rating on app stores
Led a team of developers to successfully complete a project within a tight deadline
- Q3. What sort of projects do you work on ?
- Ans.
I work on a variety of projects ranging from web development to mobile app development.
Web development using HTML, CSS, JavaScript, and various frameworks such as React and Angular
Mobile app development for iOS and Android using Swift, Kotlin, and React Native
Database design and management using SQL and NoSQL databases such as MySQL and MongoDB
API development and integration using REST and GraphQL
Machine learning proje...
- Q4. What is the difference between a hardworker and a smartworker?
- Ans.
A hardworker puts in more effort, while a smartworker works efficiently and effectively.
A hardworker may spend more time on a task, while a smartworker finds ways to complete it faster.
A hardworker may rely on brute force, while a smartworker uses their skills and knowledge to solve problems.
A hardworker may struggle with prioritization, while a smartworker knows how to focus on the most important tasks.
A hardworker ma...
- Q5. What makes you say that you are more of a developer than an analyst ?( I was asked for choice )
- Q6. Why is Zuckerburg in news these days?
- Ans.
Zuckerberg is in news due to Facebook's handling of user data and misinformation.
Facebook's role in the 2016 US Presidential election
Cambridge Analytica scandal
Testimony before US Congress
Ongoing debate on social media regulation
- Q7. Tell me about yourself
- Ans.
I am a software developer with experience in Java and Python.
I have a Bachelor's degree in Computer Science.
I have worked on various projects involving web development and data analysis.
I am proficient in Java and Python programming languages.
I am a quick learner and enjoy working in a team environment.
- Q8. Which is your favourite project (among mentioned in resume) and why?
- Ans.
My favorite project is the e-commerce website I developed for a local business.
I enjoyed working on the front-end design and user experience.
I implemented a secure payment gateway and order tracking system.
The website increased the business's online sales by 50%.
I received positive feedback from the client and their customers.
- Q9. OOPs concepts
- Q10. Explain inheritance
- Ans.
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows code reuse and promotes code organization.
The existing class is called the parent or superclass, and the new class is called the child or subclass.
The child class inherits all the properties and methods of the parent class and can also add its own unique properties and ...
- Q11. Difference between finally , finalize and final
- Ans.
finally is a keyword used in try-catch block, finalize is a method in Object class, and final is a keyword used for declaring constants.
finally is used to execute a block of code after try-catch block
finalize is called by garbage collector before destroying an object
final is used to declare a constant variable or to make a class uninheritable
- Q12. Private vs final keyword in considerance with member functions in an application offered to the user
- Ans.
Private keyword restricts access to member functions within the class while final keyword prevents overriding of functions.
Private keyword is used to hide the implementation details of a class from the user.
Final keyword is used to prevent the user from overriding a function in a subclass.
Using private and final keywords together can ensure that the implementation details of a class are not modified by the user.
- Q13. Write an interface
- Ans.
An interface defines a set of methods that a class must implement.
An interface is declared using the 'interface' keyword.
All methods in an interface are public and abstract by default.
A class can implement multiple interfaces.
Interfaces can also extend other interfaces.
Example: public interface MyInterface { void myMethod(); }
- Q14. Difference between Abstract class and Interface
- Ans.
Abstract class is a class with some implementation while Interface is a contract with no implementation.
Abstract class can have constructors while Interface cannot
Abstract class can have non-abstract methods while Interface cannot
A class can implement multiple interfaces but can only inherit from one abstract class
Abstract class is used when there is a need for common functionality among related classes while Interface...
- Q15. Inheritance types in Java
- Ans.
Inheritance types in Java
Java supports single and multiple inheritance through classes and interfaces respectively
Single inheritance is when a class extends only one parent class
Multiple inheritance is when a class implements multiple interfaces
Java also supports hierarchical inheritance where multiple classes extend a single parent class
Java does not support multiple inheritance through classes to avoid the diamond pr
- Q16. Order of multiple catch blocks in a single try block in java. Will it compile if the general catch was before the specific one?
- Ans.
Order of catch blocks in a try block in Java
Specific catch blocks should come before general catch blocks
If general catch block comes before specific catch block, it will result in a compile-time error
If multiple catch blocks are present, only the first matching catch block will be executed
- Q17. What do you know about Garbage collection
- Ans.
Garbage collection is an automatic memory management process that frees up memory occupied by objects that are no longer in use.
Garbage collection is used in programming languages like Java, C#, and Python.
It helps prevent memory leaks and reduces the risk of crashes due to memory exhaustion.
Garbage collection works by identifying objects that are no longer in use and freeing up the memory they occupy.
There are differe...
- Q18. Write code for connecting a java application to the database
- Ans.
Code for connecting a Java application to a database
Import the JDBC driver for the specific database
Create a connection object using the DriverManager class
Create a statement object to execute SQL queries
Execute the query and retrieve the results
Close the connection and release resources
- Q19. What is JSON?
- Ans.
JSON stands for JavaScript Object Notation, a lightweight data interchange format.
JSON is used to transmit data between a server and a web application, as an alternative to XML.
It is easy to read and write for humans and easy to parse and generate for machines.
JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C family of languages.
Example: {"name"
Interview Preparation Tips
Experience: The test had 50 questions which were to be answered in 50 minutes. The test is not very difficult if you got basic skills in aptitude, but the most important thing is managing time. The level of difficulty was moderate.
Tips: Do not waste time on verbal questions which have a direct answer ( synonyms and antonyms) which you are not very sure of.
Just try making a smart guess when you have a doubt by elimination or something.
Duration: 50 minutes
Total Questions: 50
Round: HR Interview
Experience: I wouldn't say it went great but it was fine. I did not think I would clear it as for most of the questions the interviewer seemed disappointed and wanted more out of me.
Tips: Keep smiling.
Only put things which you are thorough about, in your resume.
The interviewer too doesn't know everything, so just be confident in whatever you say-the interviewer might get convinced.
Round: Technical Interview
Experience: The interviewer was really cool. He realized that I mostly work on java applications so he chose to ask me stuff related to that.
He didn't want me to know the answer well but just wanted me to approach to it, maybe think more.
He went through my resume back and forth and asked mostly about all my projects and their logic and how could I take them to the next level.
Tips: Be confident.
Its okay not to know any answer, just try giving it a shot in the approach.
Skills: Object Oriented Programming (OOP) Basics, Basics Of Machine Learning, Ability To Analyse, Ability To Think Of Creative Solutions, Ability To Think Beyond Boundaries, Ability To Convince, Database Management, Java Programming
College Name: Amrita School Of Engineering, Coimbatore
Funny Moments: I had mentioned Japanese as languages known in my resume. During the HR interview , I was asked to tell "How are you ?" in Japanese. I knew that the interviewer didn't know any of that language but I was a little scared to just tell anything.
You could try giving a shot in a similar situation :P
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in May 2019. There was 1 interview round.
Interview Questionnaire
4 Questions
- Q1. How MVC works for data flow?
- Ans.
MVC separates data flow into three components: Model, View, and Controller.
Model represents data and business logic
View displays data to the user
Controller handles user input and updates the model and view accordingly
Data flows from the model to the view through the controller
Changes in the view are communicated to the controller, which updates the model and view
- Q2. What are mvc layers
- Ans.
MVC stands for Model-View-Controller. It is a software design pattern that separates an application into three interconnected components.
Model: Represents the data and business logic of the application
View: Displays the data to the user and handles user input
Controller: Acts as an intermediary between the Model and View, handling user input and updating the Model and View accordingly
- Q3. Get and post methods
- Q4. Servlet life cycle
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed before May 2020. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. Questions were related to your technology on which you are good, it starts with basic that identifies you worked in your technology and good knowledge over workflow and your coding standard.
Interview Preparation Tips
Shivam Gupta
I appeared for an interview before May 2021.
(1 Question)
- Q1. Basic data structure question with your project work
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Apr 2020. There were 5 interview rounds.
Interview Questionnaire
2 Questions
- Q1. I have got questions about vsam files and about SQL queries.
- Q2. What is my previous work and project roles and responsibilities.?
Interview Preparation Tips
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