Chapter 20, Problem 7PP

Program Plan Intro

Login

Program plan:

LoginFrame.java

• Create a class named “LoginFrame”. Inside the class,
  • Define the required components.
  • Set the width and height of the frame.
  • Define the array list
  • Define the “LoginFrame ()” method.
    • Initialize the required methods.
    • Set the size of the method
  • Define the “createTextField ()” method.
    • Define the required variables
    • Create and assign the text field.
  • Define the class “PassListener ()” and inside,
    • Define the “validate()” method.
      • Inside the try block use a while loop to read the contents of the file.
      • Use necessary condition to validate the user name and password.
      • Inside the catch display the error message.
        • Define the “actionPerformed ()” method.
        • • Assign the required text.
          • Use necessary condition to validate the input entered by the user.
          • Display the appropriate error message.
        • Define the “createButton ()” method.
        • • Create the button
          • Define the action listener.
          • Define the action for the button.
        • Define the “createPanel ()” method.
        • • Create the panel
          • Add the components to the panel

LoginViewer.java:

• Create a class named “LoginViewer”. Inside the class,
  • Define the “main()” method
    • Define the frame
    • Set the close operation
    • Set the visibility.