Apmosys Technologies Interview Questions, Process, and Tips

Q1. Java Questions Basically
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General numerical problems

Q1. What was the project in last year?
Ans. 
Developed a web-based inventory management system for a retail company.
• Used Java for backend development

• Implemented responsive design using HTML, CSS, and JavaScript

• Integrated payment gateway for online transactions
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Q2. What was your role in it?
Ans. 
I was responsible for developing and testing new features for the company's mobile application.
• Developed new features for the mobile application

• Tested the functionality of the features

• Collaborated with team members to ensure successful implementation
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Q3. What was your contribution in it?
Ans. 
I contributed by developing new features, fixing bugs, and optimizing code for the software project.
• Developed new features based on user requirements

• Fixed bugs reported by QA team or users

• Optimized code for better performance and efficiency
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Q1. What was your project for last year?
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines.
• Used HTML, CSS, and JavaScript for front-end development

• Implemented backend functionality using Node.js and MongoDB

• Incorporated user authentication and authorization features

• Utilized RESTful APIs for communication between front-end and back-end
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Q2. What are your hobbies?
Ans. 
My hobbies include playing the guitar, hiking, and reading science fiction novels.
• Playing the guitar

• Hiking

• Reading science fiction novels
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Reasoning, mathematics, and basic English grammar.

Q1. Self introduction, domain knowledge, some questions about Test case presentation.
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Q1. What are the 4 principles of oops?
Ans. 
The 4 principles of OOP are Inheritance, Encapsulation, Abstraction, and Polymorphism.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation restricts access to certain components within a class, protecting the data.

• Abstraction hides complex implementation details and only shows the necessary features.

• Polymorphism allows objects to be treated as instances of their parent class.
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Q2. What is the difference between string buffer and string builder?
Ans. 
String buffer is synchronized and thread-safe, while string builder is not synchronized and faster.
• String buffer is synchronized, making it thread-safe for use in multi-threaded environments.

• String builder is not synchronized, providing better performance in single-threaded applications.

• String builder is faster than string buffer due to lack of synchronization overhead.

• Example: StringBuffer sb = new StringBuffer(); Str
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Q3. Why strings are immutable?
Ans. 
Strings are immutable in order to ensure data integrity and security.
• Immutable strings prevent accidental data modification, ensuring data integrity.

• Immutable strings enhance security by preventing unauthorized access or tampering.

• Immutable strings allow for more efficient memory management and optimization.

• Example: 'Hello' cannot be changed to 'Hella' directly, a new string must be created.
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Q4. What are the different types of exception in java?
Ans. 
There are two types of exceptions in Java: checked exceptions and unchecked exceptions.
• Checked exceptions are checked at compile time and must be handled using try-catch or throws keyword.

• Unchecked exceptions are not checked at compile time and include RuntimeException and its subclasses.

• Examples of checked exceptions include IOException, SQLException, and ClassNotFoundException.

• Examples of unchecked exceptions include...read more
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Q5. Explain linear search algorithm.
Ans. 
Linear search is a simple searching algorithm that sequentially checks each element in a list until a match is found.
• Iterate through each element in the list

• Compare the current element with the target value

• Return the index if a match is found, otherwise return -1
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Q6. Difference between JDK jvm and jre
Ans. 
JDK includes JRE and development tools, while JRE includes only the Java Runtime Environment.
• JDK stands for Java Development Kit, which includes JRE and development tools like compilers and debuggers.

• JRE stands for Java Runtime Environment, which includes JVM and libraries necessary to run Java applications.

• JVM stands for Java Virtual Machine, which is responsible for executing Java bytecode.

• JDK is used for developing ...read more
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