TCS GIS Developer Interview Questions, Process, and Tips

An aptitude test is an assessment to measure a candidate mental aptitude/mental ability

Q1. Can you briefly Tell us about yourself?
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Q2. What do you consider to be your strongest points?
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Q3. Which programming languages do you use regularly in your work
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A group discussion is a structured conversation in which participants share their ideas, perspectives, and solutions on a specific topic.

Q1. What motivates you to seek employment at Wipro?
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Q2. What are your long-term career goals?
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Assignment details refer to the specifics of an assignment, including any documents and/or emails or subsequent correspondence between the company and the client.

Q1. What are intermediate and terminal operations
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Q2. Predefined functional interface
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Q3. Ways to create Thread
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Q1. Java 8 , java 11 and java 17 features?
Ans. 
Java 8 introduced lambda expressions, Java 11 added local-variable syntax for lambda parameters, and Java 17 included sealed classes and pattern matching.
• Java 8 introduced lambda expressions for functional programming.

• Java 11 added local-variable syntax for lambda parameters to simplify code.

• Java 17 included sealed classes to restrict inheritance and pattern matching for instanceof checks and type casts.
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Q2. Dispatcher servlet, design patterns
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Q3. @SpringbootApplication annotation, actuators
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Q4. String Coding question with java 8 features such as lambda function and stream api
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Q5. Number of words in a string
Ans. 
Count the number of words in a given string.
• Split the string by spaces and count the number of resulting elements.

• Handle edge cases like multiple spaces or empty strings.

• Consider punctuation marks as part of words unless specified otherwise.
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Q6. Microservice design patterns
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Q1. What are the types and number of constraints in your specific context?
Ans. 
There are various types of constraints in DOT NET development, including primary key, foreign key, unique, check, and default constraints.
• Primary key constraints ensure each record in a table is unique.

• Foreign key constraints enforce referential integrity between tables.

• Unique constraints ensure that all values in a column are distinct.

• Check constraints validate the data before it is inserted or updated.

• Default constra...read more
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Q2. What is the difference between an independent class and an abstract class?
Ans. 
Independent class can be instantiated while abstract class cannot be instantiated directly.
• Independent class can be directly instantiated using the 'new' keyword.

• Abstract class cannot be instantiated directly, it can only be used as a base class for other classes.

• Independent class does not require any derived class to implement its members.

• Abstract class can have abstract methods that must be implemented by derived cla
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Q1. Technical coding with the technical team
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Q1. What are your reasons for changing your job?
Ans. 
Seeking new challenges, growth opportunities, and a better work-life balance.
• Looking for new challenges and opportunities to learn and grow.

• Seeking a better work-life balance.

• Interested in working with new technologies or in a different industry.

• Wanting to advance my career and take on more responsibilities.

• Company restructuring or changes in management.
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Q1. How to invoke flows - using other flows and Apex. How do we invoke an apex class from a flow and pass variables?
Ans. 
Flows can be invoked using other flows and Apex. Apex classes can be invoked from a flow by using invocable methods and passing variables as input parameters.
• To invoke a flow from another flow, use the 'Launch Flow' element in the Flow Designer.

• To invoke an Apex class from a flow, create an invocable method in the Apex class and annotate it with @InvocableMethod.

• Pass variables from a flow to an Apex class by defining i...read more
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Q2. Why can't we create a master detail on contact as the child object
Ans. 
Master-detail relationship on Contact as child object is not allowed due to data integrity concerns.
• Contact is a standard object and cannot be a child object in a master-detail relationship

• Master-detail relationships require the child object to have a lookup to the parent object

• Contacts are often used as the primary object in many relationships, making it unsuitable as a child object
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Q3. What is child to parent communication in LWC?
Ans. 
Child to parent communication in LWC allows a child component to communicate with its parent component.
• Child components can dispatch custom events to communicate with parent components.

• Parent components can listen for these custom events and handle them accordingly.

• This communication pattern helps in passing data and triggering actions between components.
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Q1. Write triggers for updating user email from contact emails.
Ans. 
Write triggers to update user email from contact emails
• Create a trigger on the User object

• Query for related Contact records

• Update User email field with Contact email
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Q2. How does LWC ensure data refresh
Ans. 
LWC ensures data refresh by using Lightning Data Service and @wire decorator.
• LWC uses Lightning Data Service to ensure data refresh without needing to write Apex code.

• The @wire decorator in LWC allows for declarative data binding and automatic refresh when data changes.

• LWC components can also manually refresh data using imperative Apex calls or by calling the refreshApex() method.
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Q1. Given an array {1, 2, 1, 4, 5, 4, 8, 7}, how can you use Streams to remove duplicates while retaining only the even numbers?
Ans. 
Use Streams to remove duplicates and retain only even numbers from an array.
• Convert the array to a stream using Arrays.stream()

• Use distinct() to remove duplicates

• Filter out odd numbers using filter()

• Collect the result using collect(Collectors.toList())
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Q2. What is the use of Static and final when you will use Static methods
Ans. 
Static methods can be accessed without creating an instance of the class, while final keyword makes the method unchangeable.
• Static methods belong to the class itself, not to any specific instance

• Final keyword ensures that the method cannot be overridden in subclasses

• Static methods are commonly used for utility methods that do not require access to instance variables

• Example: Math class in Java has static methods like Ma
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Q3. What is the difference between @restController and @controller Annotation
Ans. 
The @RestController annotation is used to define RESTful web services while @Controller annotation is used to define MVC controller.
• RestController is a specialized version of Controller used for RESTful web services

• RestController eliminates the need for @ResponseBody annotation

• Controller is used for traditional MVC controller functionality

• RestController returns data directly without needing to go through a view resolve...read more
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Q4. What is microservices why we use it
Ans. 
Microservices are a software development technique where applications are composed of small, independent services that communicate with each other.
• Microservices allow for easier scalability and maintenance of complex applications.

• Each service in a microservices architecture can be developed, deployed, and scaled independently.

• Microservices promote flexibility and agility in software development.

• Examples of companies us...read more
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Q1. Difference between hashmap and hash table
Ans. 
HashMap is non-synchronized and allows null values, while HashTable is synchronized and does not allow null values.
• HashMap is non-synchronized, meaning it is not thread-safe, while HashTable is synchronized and thread-safe.

• HashMap allows null values for both keys and values, while HashTable does not allow null keys or values.

• HashMap is generally preferred for non-thread-safe applications, while HashTable is used in mul
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Q2. Static block related questions
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Q3. Arraylist and linkedlist question
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Q1. General Java questions
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Q2. Spring boot questions
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