To reverse all lines in a file Program plan: Import necessary packages. Create a class “LinesReverserTest”, Define the “main()” method. Execute “try” statement, Create a “Scanner” object. Prompt the user to enter the name of file. Get the name of file from the user. Call the method “reverseLines()”. Catch if exception occurs, Print the exception. Define the method “reverseLines()”, Create the input file stream to get the bytes from an input file. Get the input bytes form the file. Call the method “readAllLines()” to read all the lines from the input file. Close the input file stream. Create an output file stream to write the bytes into file. Create a loop, Create an inner loop, Call the method “write()” to write the characters into the file. Write the new line character into the output file. Close the output file stream.

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Chapter 21, Problem 3PE

Program Plan Intro

To reverse all lines in a file

Program plan:

Import necessary packages.

Create a class “LinesReverserTest”,

Define the “main()” method.

Execute “try” statement,

Create a “Scanner” object.

Prompt the user to enter the name of file.

Get the name of file from the user.

Call the method “reverseLines()”.

Catch if exception occurs,

Print the exception.

Define the method “reverseLines()”,

Create the input file stream to get the bytes from an input file.

Get the input bytes form the file.

Call the method “readAllLines()” to read all the lines from the input file.

Close the input file stream.

Create an output file stream to write the bytes into file.

Create a loop,

Create an inner loop,

Call the method “write()” to write the characters into the file.

Write the new line character into the output file.

Close the output file stream.

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