Salesforce CRM Java Developer Mock Interview

Practice 20 Salesforce CRM Java Developer interview questions covering Apex, integration patterns, and backend architecture.

Question 14 of 20

Can you discuss the differences between a user and a daemon thread?

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William Swansen

William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.

A common format of technical questions you will be asked during an interview with Salesforce is asking you to compare two terms. The best way to respond to these types of questions is to first define the terms, and then compare the differences or similarities. You may even want to provide an example to help illustrate your answer.

William Swansen

"The differences between a user thread and a daemon thread are how they are created, and their impact on JVM. User threads are created by programmers, while daemon threads run in the background. If a user thread is present, the JVM will not shut down, and the program will continue to run. However, the presence of a daemon thread does not prevent the JVM from terminating."

Anonymous Answer

User threads are high priority and always run in the foreground while daemon threads always run in the background as they are lower priority. User threads are used for complex tasks while daemon threads are the supporting tasks.

Marcie's Feedback

Great! You've clearly delineated the differences between a user and a daemon thread. Nice job!

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