Core Java Programming Course- String Replace Operations

The video tutorial explains the use of replace and replaceAll methods in strings. It covers how to replace specific characters or words with others and demonstrates the use of regular expressions to find and replace patterns. Examples include replacing a repeated substring and removing special characters from a string using regex.

What is the primary function of the replace method in strings?

• To find and remove a character or word

• To find and reverse a character or word

• To find and replace a character or word with another

• To find and duplicate a character or word

In the example provided, what is the sequence '1234' replaced with?

• The word 'replace'

• The number 5678

• The letter I

• The letter A

What happens if the target string is not found in the replace method?

• The string is cleared

• An error is thrown

• The original string is returned unchanged

• A default replacement is made

What does the replaceAll method use to find matches in a string?

• A simple search algorithm

• A regular expression pattern

• A predefined list of words

• A character map

Which characters are targeted for removal in the replaceAll example?

• Only numbers

• Only letters

• Vowels

• Special characters and spaces