Apex Group Team Lead Interview Questions and Answers

Concatenate inputstring with another string to form a new string

• Use string concatenation to combine inputstring with another string

• Ensure to handle any necessary formatting or spacing between the strings

• Example: inputstring = 'Hello', newString = 'World', result = 'Hello World'

Encapsulation, Inheritance, Polymorphism, Abstraction

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in OOP

• Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Parent class and child class relationship

• Polymorphism: Ability to present the same interface for different data types. Example: Method overloading and method overridi...read more

DI stands for Dependency Injection and IOC stands for Inversion of Control.

• DI is a design pattern where the dependencies of a class are injected from the outside rather than created within the class itself.

• IOC is a design principle where the control of object creation and flow is inverted from the class to an external entity.

• DI helps in making classes more modular, testable, and flexible.

• IOC helps in decoupling compone...read more

Abstract class is a class that can have both abstract and non-abstract methods, while interface is a contract that defines methods that a class must implement.

• Abstract class can have constructors, fields, and methods, while interface can only have abstract methods.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used when some common functionality needs to be s...read more

Recent global issues

• COVID-19 pandemic and its impact on healthcare systems and economies worldwide

• Climate change and its effects on the environment and communities

• Political unrest and conflicts in various regions

• Racial and social justice movements

• Global economic inequality and poverty

• Cybersecurity threats and data breaches

• Natural disasters like hurricanes, earthquakes, and wildfires

• Global migration and refugee crisis