HCLTech Lead Developer Interview Questions and Answers

Custom exception handling is the process of creating and handling exceptions specific to an application or system.

• Custom exceptions are created by extending the base Exception class in the programming language.

• They allow for more specific error messages and handling based on the needs of the application.

• Examples include creating an exception for invalid user input or a database connection failure.

• Custom exception handl...read more

Throw is a keyword used to throw an exception in Java. Thrown is the past participle of throw.

• throw is used to throw an exception in Java

• thrown is the past participle of throw

• throw is a keyword, while thrown is not

continue skips current iteration and moves to next, while break exits the loop entirely.

• continue is used to skip the current iteration of a loop and move to the next one

• break is used to exit the loop entirely and move on to the next statement

• continue is often used in loops with conditional statements to skip certain iterations

• break is often used in loops with conditional statements to exit the loop when a certain condi...read more

An async method is a method that allows other code to run while it executes a long-running operation asynchronously.

• Async methods are marked with the async keyword.

• They return a Task or Task object.

• They can be awaited using the await keyword.

• Examples include HttpClient.GetAsync() and FileStream.ReadAsync().

JWT stands for JSON Web Token, a compact and secure way of transmitting information between parties as a JSON object.

• JWT is used for authentication and authorization purposes.

• It consists of three parts: header, payload, and signature.

• The header contains the algorithm used to sign the token.

• The payload contains the claims or information being transmitted.

• The signature is used to verify the authenticity of the token.

• JWTs...read more