National University of Singapore Contractor Interview Questions and Answers

Java 8 introduced several new features including lambda expressions, streams, and default methods.

• Lambda expressions allow for functional programming and concise code.

• Streams provide a way to process collections of data in a parallel and functional manner.

• Default methods allow for adding new functionality to interfaces without breaking existing implementations.

• Method references provide a way to refer to methods without...read more

Customised immutable java class can be written by declaring all fields as final and not providing any setters.

• Declare all fields as final

• Do not provide any setters

• Provide a constructor to initialize all fields

• Override equals() and hashCode() methods

• Make the class final

Model validation metrics are crucial for regulatory and scoring models.

• Regulatory models require validation metrics to ensure compliance with regulations and standards.

• Scoring models require validation metrics to ensure accuracy and reliability of the model.

• Common validation metrics include accuracy, precision, recall, F1 score, and ROC curve analysis.

• Validation metrics should be chosen based on the specific requiremen...read more