Challenge questions

The following Q&As are designed to challenge your understanding of the Java language + your code readability skills.

(How) can you improve the list mutating operations code

(How) can you improve performance of the stream filter code

(How) can you improve the HashMap lookup code

(How) can you reduce boilerplate code

What are the Pros and Cons of using ThreadLocal

(How) can you improve the thread lock code - I

(How) can you improve thread lock code - II

(How) can I improve string concatenate performance

(How) can I improve the empty string check code

(How) can I improve the If conditional code

(How) can I improve the resource handling code

(How) can I improve null handling