Question

Which of the following returns a String?

Options

• length()

• charAt(int)

• replace(char, char)

• indexOf(String)

Answer 1

replace(char, char)

Explanation:

The method replace(char oldChar, char newChar) returns a new String with all occurrences of oldChar replaced by newChar. This method does not modify the original string but produces a new one with the specified replacements.