Edit the file content Program Plan: Filename: “SimpleEditor.java” Import the required packages. Declare the class “SimpleEditor”. Declare the required constant variables. Declare the required variables for button, text field, text area, and label. Create an object for the “JPanel”. Define the main method. Create an object for the class. Show the GUI window. Define the constructor. Set the window size Close the window. Create an object for “Container” class. Set the border layout. Add the labels, text field, and button into the window. Add the action to the button. Add the border layout. Add the action to the button. Add the border layout. Declare the “actionPerformed” method. Get the source. If the “source” is equal to “fileButton”, call the “getFile” method. If the “source” is equal to “saveButton”, call the “saveFile” method. Otherwise, set the text as “Unexpected error”. Define “getFile” method. Declare the required variable. Get the text. Create an object for the “File” class. Set the empty text. If the “fileObject” is not exists, set the text as “New file: Start editing it.” If the “fileObject” is not readable, set the text, as “That file is not readable.” Otherwise, in “try” block get the content line by line from the file and finally close that file. In “catch” block, set the text as “Problem reading from file.” Define “saveFile” method. Declare the required variables. Create an object for “File” class. In “try” catch, Get the file from the folder. Set the text as “File was written”. Close the file. In “catch” block, set the text as “Problem reading from file.”

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Chapter 10, Problem 15PP

Program Plan Intro

Edit the file content

Program Plan:

Filename: “SimpleEditor.java”

Import the required packages.

Declare the class “SimpleEditor”.

Declare the required constant variables.

Declare the required variables for button, text field, text area, and label.

Create an object for the “JPanel”.

Define the main method.

Create an object for the class.

Show the GUI window.

Define the constructor.

Set the window size

Close the window.

Create an object for “Container” class.

Set the border layout.

Add the labels, text field, and button into the window.

Add the action to the button.

Add the border layout.

Add the action to the button.

Add the border layout.

Declare the “actionPerformed” method.

Get the source.

If the “source” is equal to “fileButton”, call the “getFile” method.

If the “source” is equal to “saveButton”, call the “saveFile” method.

Otherwise, set the text as “Unexpected error”.

Define “getFile” method.

Declare the required variable.

Get the text.

Create an object for the “File” class.

Set the empty text.

If the “fileObject” is not exists, set the text as “New file: Start editing it.”

If the “fileObject” is not readable, set the text, as “That file is not readable.”

Otherwise, in “try” block get the content line by line from the file and finally close that file.

In “catch” block, set the text as “Problem reading from file.”

Define “saveFile” method.

Declare the required variables.

Create an object for “File” class.

In “try” catch,

Get the file from the folder.

Set the text as “File was written”.

Close the file.

In “catch” block, set the text as “Problem reading from file.”

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