Core Java Programming Course- Sorting a Line from a Text File

The video tutorial explains how to sort lines from a text file alphabetically using Java. It covers reading lines into a list, sorting them with the Collections class, and writing the sorted lines back to the file. The tutorial also demonstrates handling file content and ensuring lines are written correctly with line breaks.

Why is sorting lines from a text file a common interview question?

• It checks the understanding of database management.

• It assesses the knowledge of network protocols.

• It tests knowledge of file handling and sorting algorithms.

• It evaluates the ability to write complex algorithms.

What is the advantage of reading lines into a list instead of a string?

• Strings are immutable.

• Lists consume less memory.

• Lists are easier to sort than strings.

• Strings are faster to process.

Which Java class is used to sort the list of lines alphabetically?

• Arrays

• Collections

• FileUtils

• String

What is the purpose of displaying the sorted lines before writing them back to the file?

• To improve performance.

• To save memory.

• To check for duplicate lines.

• To verify the sorting order.

Why is it necessary to clear the file before writing the sorted lines back?

• To remove existing content and avoid duplication.

• To ensure the file is not corrupted.

• To increase the file size.

• To improve the sorting speed.

What character is added to ensure lines are written on separate lines in the file?

• Comma

• Space character

• Tab character (\t)

• Newline character (\n)

What is the final step after sorting the lines in the list?

• Deleting the original file.

• Reversing the order of lines.

• Converting the list to a string.

• Writing the sorted lines back to the file.