Add package statement Program plan: Import the required packages into the program. Declare the required variables. Get the file input path from the user as the command line arguments. Use the try{}..catch() block for exception handling. Check the input argument value is valid or not. Check the input argument path exists 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. If the file contents are directory, then get the directory name starting with “chapter” and prepare a insert package statement. Call the “insertIntoFilesInDirectory()” method to insert the package statement. The “insertIntoFilesInDirectory()” method lists the files available in each directory. This method gets the files name that end with “.java”. This method calls the “insertPackageStatment()” method to insert the package name in each file ending with the name “.java”. The “insertPackageStatment()” method reads each file that ends with the name “.java” and appends the package name as “package chapteri;”at the beginning of each file.

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Chapter 12, Problem 12.18PE

Program Plan Intro

Add package statement

Program plan:

Import the required packages into the program.

Declare the required variables.

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

Use the try{}..catch() block for exception handling.

Check the input argument value is valid or not.

Check the input argument path exists 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.

If the file contents are directory, then get the directory name starting with “chapter” and prepare a insert package statement.

Call the “insertIntoFilesInDirectory()” method to insert the package statement.

The “insertIntoFilesInDirectory()” method lists the files available in each directory.

This method gets the files name that end with “.java”.

This method calls the “insertPackageStatment()” method to insert the package name in each file ending with the name “.java”.

The “insertPackageStatment()” method reads each file that ends with the name “.java” and appends the package name as “package chapteri;”at the beginning of each file.

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