Andritz Hydro Location India Developer Interview Questions and Answers

An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

• An abstract class can have abstract methods that must be implemented by its subclasses.

• Abstract classes can have non-abstract methods and fields.

• An abstract class can be used to define a common interface for a group of related classes.

• Example: Animal is an abstract class and Dog, Cat, and Bird are its subclasses.

• Examp...read more

Composition is a strong relationship where the child object cannot exist without the parent object. Aggregation is a weak relationship where the child object can exist independently.

• Composition is a 'has-a' relationship, where the parent object owns the child object.

• Aggregation is a 'has-a' relationship, where the child object is a part of the parent object.

• In composition, the child object's lifetime is managed by the ...read more

The windmill manufacturer in Scandinavia is facing labor pool shortage and needs to expand.

• The manufacturer can consider outsourcing labor from other countries.

• They can also invest in training programs to develop local talent.

• The manufacturer can offer incentives to attract skilled workers to relocate.

• They can also consider automating some of their processes to reduce the need for labor.

• The manufacturer can partner wit...read more