Core Java Programming Course- Removing Duplicate Words from a Text File

The video tutorial explains how to remove duplicate words from a text file, a common interview question. It guides through reading the file, processing the text to remove characters, splitting it into words, and using logic to filter out duplicates. The final step involves writing the unique words back to the file. The tutorial emphasizes the importance of file handling in programming tasks.

What is the main objective of the program discussed in the video?

• To count the number of words in a text file

• To remove duplicate words from a text file

• To convert a text file into a PDF

• To translate the text file into another language

Which method is suggested to read the text file into a string?

• Using FileReader

• Using FileUtils

• Using Scanner

• Using BufferedReader

What is the purpose of replacing characters with spaces in the text?

• To remove punctuation

• To prepare the text for splitting into words

• To make the text more readable

• To convert the text to uppercase

How does the program ensure that only unique words are added to the new string?

• By counting the frequency of each word

• By sorting the words alphabetically

• By checking if the word is already in the new string

• By using a set to store words

What condition is checked before adding a word to the new string?

• If the word starts with a vowel

• If the word is not already present and is not a blank

• If the word is a noun

• If the word is longer than three characters

What is the final step in the program after processing the words?

• Sending the words to a database

• Emailing the words to the user

• Printing the words to the console

• Saving the unique words back to the file

Why is handling files considered important in day-to-day work?

• Because files are always encrypted

• Because file handling is a common task in programming

• Because files are easy to lose

• Because files are always large