Capgemini Senior Consultant Interview Questions and Answers

I have worked with design patterns such as Singleton, Factory, Observer, and Strategy.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object that will be created.

• Observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified a...read more

I would immediately investigate the issue, identify the root cause, and work on a solution to prevent it from happening again.

• Investigate the issue thoroughly to understand the scope and impact

• Identify the root cause by analyzing logs, code, and configurations

• Work on a solution to fix the issue and prevent it from reoccurring

• Communicate with stakeholders about the issue and the steps taken to resolve it

Yes, I am able to work under pressure by staying organized, prioritizing tasks, and maintaining a positive attitude.

• I stay organized by creating to-do lists and setting deadlines for tasks.

• I prioritize tasks based on urgency and importance to ensure critical tasks are completed first.

• I maintain a positive attitude by taking short breaks, practicing deep breathing exercises, and seeking support from colleagues when need...read more

SOLID is a set of five principles in object-oriented programming that help make software designs more understandable, flexible, and maintainable.

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Objects of a superclass should be replaceable with object...read more

HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.

• HashMap uses an array of buckets to store key-value pairs.

• Keys are hashed to determine the index where the value will be stored.

• In case of hash collisions, a linked list or balanced tree is used to store multiple entries in the same bucket.

• HashMap allows one null key and multiple null values.

• Example: HashMap&...read more

Java Stream API in Java 8 allows for functional-style operations on collections.

• Java Stream API provides a way to perform operations on collections in a functional style.

• It supports operations like filter, map, reduce, and collect.

• Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);