Java – Page 280 – Sharp: NCLEX, Java & Python

Java: Loops and Iteration

How do 'while loops' differ from 'for loops'?

How would you explain a 'for loop' in a Java interview?

Why start accumulators at zero?

Why use a 'while loop'?

How can you optimize a loop to skip unnecessary iterations?

How can you avoid an 'off-by-one' error in loops?

Why is it crucial for hashCode and equals to be consistent?

How would you explain the tradeoff of using a mutable object as a HashMap key in an interview?

How do hashCode collisions affect HashMap performance?

What happens if two unequal objects have the same hashCode?