Mastering Java: The Ultimate Quiz for 'Thinking in Java'

Disable ads (and more) with a membership for a one time $2.99 payment

Want to excel in Java? Test your knowledge with our ultimate quiz based on 'Thinking in Java'. Engage with multiple-choice questions and in-depth explanations. Boost your understanding and prepare for your exam with confidence.

Start Multiple Choice Practice Test
Start Flash Cards

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Why are Implicit StringBuilder objects created in loops considered inefficient?

  1. They consume more memory

  2. They slow down execution speed

  3. Each loop iteration creates a new StringBuilder object

  4. They require manual garbage collection

The correct answer is: Each loop iteration creates a new StringBuilder object

Implicit StringBuilder objects created in loops are considered inefficient for two main reasons- they consume more memory and slow down execution speed. Whenever a new StringBuilder object is created, it uses up additional memory, which can cause memory allocation issues if used in a loop. Additionally, constantly creating new objects also slows down the execution speed of the program as it has to constantly allocate and deallocate memory for each object. This is why it is important to use a single StringBuilder object declared outside of the loop and reuse that object for each iteration, rather than creating new ones. This also avoids the need for manual garbage collection, making the code more efficient. Therefore, the option "Each loop iteration creates a new StringBuilder object" is incorrect and the correct answer is "C".

More Questions Like This