Replace text Program plan: Import the required packages into the program. Create a class Exercise12_22 to replace the text of all the files located in a specific directory. Declare the required variables. Get the file input path from the user as the command line arguments. In the main() method. Check command line parameter is valid or not. Check the input path is a directory or not. If it is not a directory, then display the error message. If it is a directory, then list the file content of the directory. The directory contents are files, then invoke the method replaceInAFile() to replace the file old string with new string. The method replaceInAFile() is used with the try{}..catch() block for exception handling. This method replaces all the files in old string with a new string located in a directory.

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Chapter 12, Problem 12.22PE

Program Plan Intro

Replace text

Program plan:

Import the required packages into the program.

Create a class Exercise12_22 to replace the text of all the files located in a specific directory.

Declare the required variables.

Get the file input path from the user as the command line arguments.

In the main() method.

Check command line parameter is valid or not.

Check the input path is a directory or not.

If it is not a directory, then display the error message.

If it is a directory, then list the file content of the directory.

The directory contents are files, then invoke the method replaceInAFile() to replace the file old string with new string.

The method replaceInAFile() is used with the try{}..catch() block for exception handling.

This method replaces all the files in old string with a new string located in a directory.

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