Java

Question 1

Which Java class is optimal for fast, mutable string handling, especially for concatenation and modifications?

Answer 1

Using the StringBuilder class is often the best choice for efficient string manipulation in Java due to its mutable nature and optimized performance for concatenation and modification operations.

Question 2

Why are Java strings immutable and how does it impact program efficiency?

Answer 2

Java strings are immutable for stability and safety, creating new objects for changes, impacting efficiency by managing memory and ensuring consistent values throughout the program.