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Jio Software Developer Interview Questions and Answers
34 Interview questions
Optimizing React applications involves techniques to enhance performance and reduce unnecessary rendering for a smoother user experience.
Use React.memo: This higher-order component prevents unnecessary re-renders by memoizing the component's output based on its props.
Implement useCallback and useMemo: These hooks help to memoize functions and values, preventing re-creation on every render, which can improve perfor...
Efficiently count letter frequencies in a sentence using a hash map for O(n) time complexity.
Use a hash map (dictionary) to store letter counts.
Iterate through each character in the sentence.
Ignore non-letter characters and convert letters to lowercase.
Example: For 'Hello World', the counts would be {'h': 1, 'e': 1, 'l': 3, 'o': 2, 'w': 1, 'r': 1, 'd': 1}.
Count occurrences of elements, store if count equals x in array of strings.
Iterate through elements, count occurrences using a hashmap
Store elements with count equal to x in a separate array
Return the array of strings with elements that meet the criteria
Abstraction and interface are key concepts in Java for achieving abstraction and defining contracts for classes.
Abstraction in Java is achieved using abstract classes and interfaces.
Abstract classes can have both abstract and concrete methods, while interfaces can only have abstract methods.
Interfaces define contracts that classes must implement, allowing for polymorphism and loose coupling.
Example: interface Shap...
What people are saying about Jio
JSP stands for JavaServer Pages, a technology used for creating dynamic web pages.
JSP allows embedding Java code in HTML pages
It simplifies the process of creating dynamic web content
JSP files are compiled into servlets by the server for execution
MySQL is a specific implementation of SQL, which is a standardized language for managing databases.
MySQL is a specific relational database management system (RDBMS) that uses SQL as its query language.
SQL (Structured Query Language) is a standardized language for managing databases, used by various RDBMS like MySQL, Oracle, and SQL Server.
MySQL is open-source and free to use, while some other RDBMS like Oracle may...
Implementing a stack using arrays without custom data structures
Use an array to store the elements of the stack
Keep track of the top of the stack using a variable
Implement push operation by adding elements to the end of the array
Implement pop operation by removing elements from the end of the array
Linkedlist add and delete node concept with code
To add a node to a linked list, create a new node and update the next pointer of the current last node to point to the new node
To delete a node from a linked list, update the next pointer of the previous node to skip over the node to be deleted
Race condition is a situation in which the outcome of a program depends on the order of execution of its threads.
Occurs when multiple threads access shared data and try to change it at the same time
Can lead to unpredictable behavior and bugs in the program
Prevented by using synchronization techniques like locks and semaphores
Deadlocks can be handled by using techniques like prevention, avoidance, detection, and recovery.
Use prevention techniques like ensuring a strict ordering of resource requests to avoid circular wait.
Implement avoidance techniques like ensuring that resources are only allocated if they can be used without causing a deadlock.
Detect deadlocks by periodically checking for circular wait conditions and taking appropriat...
Jio Software Developer Interview Experiences
30 interviews found
Tushar Jamdar
(3 Questions)
- Q1. What is different between Mysql Vs sql ?
- Ans.
MySQL is a specific implementation of SQL, which is a standardized language for managing databases.
MySQL is a specific relational database management system (RDBMS) that uses SQL as its query language.
SQL (Structured Query Language) is a standardized language for managing databases, used by various RDBMS like MySQL, Oracle, and SQL Server.
MySQL is open-source and free to use, while some other RDBMS like Oracle may requ...
- Q2. What abstraction and interface in java?
- Ans.
Abstraction and interface are key concepts in Java for achieving abstraction and defining contracts for classes.
Abstraction in Java is achieved using abstract classes and interfaces.
Abstract classes can have both abstract and concrete methods, while interfaces can only have abstract methods.
Interfaces define contracts that classes must implement, allowing for polymorphism and loose coupling.
Example: interface Shape { v...
- Q3. What is mean by JSP?
- Ans.
JSP stands for JavaServer Pages, a technology used for creating dynamic web pages.
JSP allows embedding Java code in HTML pages
It simplifies the process of creating dynamic web content
JSP files are compiled into servlets by the server for execution
Skills evaluated in this interview
Anonymous
I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.
Probability, permutation and combination
Array, string medium-level questions
VISHAL
2 coding questions, DSA
(2 Questions)
- Q1. What is binary tree and implement
- Ans.
A binary tree is a data structure where each node has at most two children.
Consists of nodes, each with a left and right child pointer
Root node is the topmost node
Traversal methods include in-order, pre-order, and post-order
- Q2. What is deadlock
- Ans.
Deadlock is a situation in which two or more processes are unable to proceed because each is waiting for the other to release a resource.
Occurs in multitasking environments
Caused by a circular dependency of resources
Can be resolved by using techniques like resource allocation graph
Example: Process A holds Resource 1 and waits for Resource 2, while Process B holds Resource 2 and waits for Resource 1
Skills evaluated in this interview
Selected
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. What is rake
- Q2. Differecne between class and module
- Q3. Mvc architecture
(1 Question)
- Q1. Count the occurrences of each element, and if the count is equal to a specified value \( x \), store those elements in an array and return that array.
- Ans.
Count occurrences of elements, store if count equals x in array of strings.
Iterate through elements, count occurrences using a hashmap
Store elements with count equal to x in a separate array
Return the array of strings with elements that meet the criteria
Coding round - array, linked lists
(1 Question)
- Q1. Salary Negotiation
Selected
I applied via Campus Placement and was interviewed before Oct 2023. There were 2 interview rounds.
# 3 DSA qustions basically leetcode medium
(5 Questions)
- Q1. QUestions revolved around select and join queries
- Q2. Linkedlist add and delete node concept with code
- Ans.
Linkedlist add and delete node concept with code
To add a node to a linked list, create a new node and update the next pointer of the current last node to point to the new node
To delete a node from a linked list, update the next pointer of the previous node to skip over the node to be deleted
- Q3. How to handle dead locks?
- Ans.
Deadlocks can be handled by using techniques like prevention, avoidance, detection, and recovery.
Use prevention techniques like ensuring a strict ordering of resource requests to avoid circular wait.
Implement avoidance techniques like ensuring that resources are only allocated if they can be used without causing a deadlock.
Detect deadlocks by periodically checking for circular wait conditions and taking appropriate act...
- Q4. What is race condition?
- Ans.
Race condition is a situation in which the outcome of a program depends on the order of execution of its threads.
Occurs when multiple threads access shared data and try to change it at the same time
Can lead to unpredictable behavior and bugs in the program
Prevented by using synchronization techniques like locks and semaphores
- Q5. Build stack from scratch without using custom data structures
- Ans.
Implementing a stack using arrays without custom data structures
Use an array to store the elements of the stack
Keep track of the top of the stack using a variable
Implement push operation by adding elements to the end of the array
Implement pop operation by removing elements from the end of the array
Interview Preparation Tips
Skills evaluated in this interview
Some basic aptitude qes has been asked.
Interview Preparation Tips
I applied via Referral and was interviewed in May 2024. There were 2 interview rounds.
GD round goes up to 15 min
(1 Question)
- Q1. Tell about you self
I applied via Campus Placement
It was an easy test. Multiple choice questions bases on java
(1 Question)
- Q1. Asked oops concepts, collection, basic multithreading questions.
(1 Question)
- Q1. Asked some questions related to projects.
Jio Interview FAQs
Some of the top questions asked at the Jio Software Developer interview -
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Jio Software Developer Reviews and Ratings
based on 124 reviews
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