Osmosys Software Solutions Web Developer Interview Questions and Answers

25 MCQ questions online with time limit

Create webapp . Frontend, Backend , data encryption

It was online 60min test.

It was offline 30 min test.

Q1. Oops,dbms,css,html,dsa,java.
Add your answer
Q2. It was very friendly .
Add your answer

Q1. What are the 4 principles of oops?
Add your answer
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...read more
Answered by AI
Add your answer
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.
Answered by AI
Add your answer
Q4. What are the different types of exception in java?
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer

Easy to medium
profit and loss questions
Permutation and combination

Easy to medium
45 mins

Q1. Basic concept of Oops Java basic
Add your answer
Q2. Constructor Overloading
Add your answer
Q3. Operator overloading in Java?
Ans. 
Operator overloading allows operators to be redefined for user-defined types in Java.
• Operator overloading is not supported in Java as it can lead to ambiguity and confusion.

• Java does not allow custom operators to be defined or existing operators to be overloaded.

• Instead of operator overloading, Java provides method overloading where methods with the same name but different parameters can be defined.
Answered by AI
Add your answer
Q4. Define java and it's features
Add your answer

Q1. Introduction Present events
Add your answer

Simple aptitude questions.

Q1. What's your strength ?
Add your answer
Q2. Are you willing to work under pressure?
Add your answer

Easy aptitude, 30 min with 20 question

Q1. Pattern question based on the coding
Ans. 
This question tests your ability to identify and generate patterns in coding.
• Understand the pattern: Analyze the given examples to identify the underlying rule.

• Use loops: Implement loops to generate sequences based on the identified pattern.

• Consider edge cases: Ensure your solution handles special cases, like empty arrays or single elements.

• Optimize for performance: Think about the time complexity of your solution, esp...read more
Answered by AI
Add your answer