• Text editor Intro:
  • The project involves building a text editor in Java, using Java Swing for creating a graphical user interface.
  • The text editor will have a window (frame) with a menu bar, consisting of two menus - file menu and edit menu.
  • The file menu will have features like new window, save file, and open file.
  • The edit menu will have five functions - Cut, Copy, Paste, Select All, and Close button.
  • The text area inside the window will be used for writing and editing the text.
• Text editor Building UI:
  • Creating a basic UI for a text editor project in Java using Java Swing components.
  • Creating a new project in IntelliJ named "text data" with Java as the language and IntelliJ as the build system.
  • Choosing Open JDK 8 as the preferred JDK version.
  • Refactoring the main class to be called "text editor" and creating a constructor for the text editor class.
  • Calling the constructor in the main function to create an instance of the text editor application.
  • Using the JFrame class to create an application window.
  • Declaring a data member "frame" and initializing it as a new JFrame with dimensions 400x400.
  • Making the frame visible and setting the layout.
• Text editor Adding Action Listeners:
  • Discussing Action Listener classes and action events.
  • Implementing the ActionPerformed method from the Action Listener interface to listen to action events.
  • Defining the action to be taken when a specific action event occurs, based on the event source.
• Text editor Adding File Menu Functionalities:
  • Implementing file menu functionalities such as new window, open file, and save file.
  • Using JFileChooser to open the file chooser and allowing the user to select the file path and file to open.
  • Copying and pasting the text from the file into the text area.
  • Triggering an action event when the open button is clicked and listening to it in the ActionPerformed method.
  • Saving the text from the text area to a new file when the save button is clicked.
• Text editor Adding File Menu Functionalities Part 2:
  • Implementing the save file functionality similar to the open file functionality.
  • Checking if the action event source is the save file functionality using an "if" statement.
  • Initializing a file chooser to select the file path and name using the show save dialog method.
  • Creating a new file with the chosen directory path and file name using the File object.
  • Saving the text from the text area to the new file.
• Text editor Final touch:
  • Adding finishing touches to the application's UI.
  • Adding scroll bars to make the UI more user-friendly.
  • Wrapping the text area inside a scroll pane class to make it scrollable.
  • Creating a panel that contains the scroll pane and the text area.
  • Adding borders inside the panel to enhance the visual appeal.
  • Adding the text area to the panel and the panel to the scroll pane in the constructor.
  • Making the scroll pane scrollable only when the text goes beyond the borders of the application.
  • Adding scroll bars by creating a scroll pane with vertical and horizontal scroll bars as needed and adding it to the panel.