Wipro Senior Software Engineer Interview Questions and Answers

Basic java MCQ questions was asked

Q1. Can we overide static method?
Ans. 
Yes, static methods can be overridden in Java using the concept of method hiding.
• Static methods can be hidden in subclasses by declaring a static method with the same signature as the one in the superclass.

• The method in the subclass is said to hide the method in the superclass, but it is not truly overridden as in the case of instance methods.

• Example: public class Parent { public static void display() { S...read more
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Q2. Hash map internal implementation
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Hash map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values in an array.
• Hash map uses an array to store key-value pairs.

• A hash function is used to determine the index of the array where a key-value pair will be stored.

• Collision resolution techniques like chaining or open addressing are used to handle cases where multiple keys map to the same index.

• Hash map...read more
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Q1. Saga design pattern & explain with usecase.
Ans. 
The Saga pattern manages distributed transactions by breaking them into smaller, manageable steps with compensating actions.
• Saga pattern is used in microservices to handle long-running transactions.

• It consists of a series of local transactions, each followed by a compensating transaction.

• Example: In an e-commerce application, placing an order may involve inventory check, payment processing, and shipping.

• If payment fail...read more
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Q2. Circuit Breaker microservices design pattern
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The Circuit Breaker pattern prevents system failure by stopping requests to a failing service temporarily.
• Monitors service calls and tracks failures.

• Opens the circuit to prevent further calls when failures exceed a threshold.

• After a timeout, it allows a limited number of test calls to check if the service is back.

• Example: In a payment processing microservice, if the payment gateway fails repeatedly, the circuit breaker...read more
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Q1. Multithreading in c#
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Q2. Semaphore and async await
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Q1. FLEXCUBE parameters and behavior.
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FLEXCUBE is a core banking software used by financial institutions for various parameters and behaviors.
• FLEXCUBE is a comprehensive core banking software solution provided by Oracle.

• It allows financial institutions to manage various banking operations such as customer accounts, loans, and deposits.

• FLEXCUBE parameters include configuration settings for different modules like retail banking, corporate banking, and treasu...read more
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Q1. FLEXCUBE related questions on various modules
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Q1. General HR questions and component discussions,
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Q1. Write css for clicked button color change
Ans. 
CSS code to change button color when clicked
• Use :active pseudo-class to style the button when clicked

• Set the desired color using the background-color property

• Example: button:active { background-color: red; }
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Q2. JQuery for delete first element in div
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Use jQuery to remove the first element in a div
• Use the :first-child selector to target the first element in the div

• Use the remove() method to delete the selected element
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Q1. F2F - delayed process basic java question stream coding question to reverse string and get the value with highest length tansient, volatile
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Q2. Aggreagtion vs composition
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Aggregation is a 'has-a' relationship where one object contains another object, while composition is a stronger form of aggregation where the child object cannot exist without the parent object.
• Aggregation is a weaker relationship where the child object can exist independently of the parent object.

• Composition is a stronger relationship where the child object is part of the parent object and cannot exist without it.

• Aggr...read more
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Q3. Streams coding question get highest string value
Ans. 
Find the highest string value from an array of strings based on lexicographical order.
• Use Java Streams to sort the array of strings: `Arrays.stream(array).sorted().findFirst().get()`.

• Example: For input `['apple', 'banana', 'cherry']`, the highest value is `cherry`.

• Consider edge cases like empty arrays: `[]` should return an appropriate message or null.

• Use `Comparator.reverseOrder()` for descending order if needed.
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Q4. Transient keyword
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Q5. Spriingboot, microservices , annotation
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