CGI Group Senior Software Engineer Interview Questions and Answers

Java 8 introduced significant features like lambdas, streams, and new date/time APIs, enhancing productivity and code readability.

• Lambda Expressions: Enable concise representation of functional interfaces. Example: (a, b) -> a + b.

• Streams API: Facilitates functional-style operations on collections. Example: list.stream().filter(x -> x > 10).collect(Collectors.toList()).

• Default Methods: Allow interfaces to...read more

OTC (Order to Cash) is a business process that involves order management, fulfillment, and payment collection.

• Order Placement: Customers place orders through various channels (e.g., online, phone).

• Order Processing: Orders are validated, and inventory is checked for availability.

• Order Fulfillment: Products are picked, packed, and shipped to the customer.

• Invoicing: An invoice is generated and sent to the customer fo...read more

Producer-consumer problem involves synchronization between two processes sharing a common buffer.

• Use a shared buffer to store data produced by the producer and consumed by the consumer

• Implement synchronization mechanisms like mutex or semaphore to control access to the shared buffer

• Producer adds data to the buffer and notifies the consumer, while consumer removes data and notifies the producer

A constant pointer is a pointer that cannot be reassigned to point to a different memory location.

• A constant pointer is declared using the 'const' keyword before the pointer type.

• Once a constant pointer is assigned a memory address, it cannot be changed to point to a different address.

• Example: const int *ptr; // ptr is a constant pointer to an integer

Sortcards is a utility program used for sorting data on punched cards in mainframe computers.

• Sortcards is a utility program commonly used in mainframe computers to sort data on punched cards.

• It is used to rearrange the order of data on punched cards based on specified criteria.

• Sortcards can be used to sort data alphabetically, numerically, or based on custom sorting rules.

• An example of using sortcards is sorting a...read more

I have used annotations like @Override, @Deprecated, @SuppressWarnings in Java programming.

• @Override - Indicates that a method overrides a method in its superclass

• @Deprecated - Marks a method as deprecated, discouraging its use

• @SuppressWarnings - Suppresses compiler warnings for a given type of annotation