CGI Group Application Developer Interview Questions and Answers

A business rule is a specific guideline or constraint that dictates how a business operates or makes decisions.

• Business rules are typically defined by stakeholders or subject matter experts.

• They help ensure consistency, compliance, and efficiency in business processes.

• Examples include age restrictions for purchasing alcohol, pricing strategies, and approval processes for expenses.

An update set is a group of changes that can be moved from one instance to another in ServiceNow.

• Update sets are used to transport customizations, such as new fields, tables, or scripts, between instances.

• They help in organizing changes and tracking what customizations are being moved.

• Update sets can be previewed, committed, and rolled back if needed.

• Example: Creating a new field in a development instance and moving it

Constructors are special methods used to initialize objects in a class.

• Constructors have the same name as the class.

• Types of constructors include default, parameterized, copy, and static constructors.

• Example: public class Person { public Person() { } }

Memorization is the process of committing information to memory for later recall.

• Memorization involves encoding information into memory through repetition or association.

• It is often used in education to learn facts, formulas, or concepts.

• Techniques like mnemonics, visualization, and chunking can aid in memorization.

• Examples include memorizing multiplication tables, historical dates, or foreign language vocabulary.

Currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of functions, each taking a single argument.

• Currying helps in creating reusable functions and improving code readability.

• It allows partial application of functions, where some arguments are fixed and others are left to be provided later.

• Curried functions can be composed easily to create more complex...read more

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

• HashMap uses hashing to store and retrieve key-value pairs

• It uses an array of linked lists to handle collisions

• The key's hash code is used to determine the index in the array where the key-value pair is stored

• HashMap allows one null key and multiple null values

• Example: HashMap<String, Integer> map = new

String builder is not synchronized, faster but not thread-safe. String buffer is synchronized, slower but thread-safe.

• String builder is faster due to lack of synchronization, suitable for single-threaded environments.

• String buffer is slower due to synchronization, suitable for multi-threaded environments.

• Example: StringBuilder sb = new StringBuilder(); StringBuffer sbf = new StringBuffer();

I am passionate about developing innovative applications and believe in the mission of your company.

• Excited about the opportunity to work on cutting-edge technologies

• Aligned with the company's values and goals

• Seeking a challenging and dynamic work environment

• Impressed by the company's reputation and success stories