Section 12.6 Text Fields and an Introduction to Event Handling with Nested Classes
• GUIs are event driven—when the user interacts with a GUI component, events (p. 485) drive the program to perform tasks.
• An event handler (p. 485) performs a task in response to an event.
• Class JTextField (p. 485) extends JTextComponent (p. 485) of package javax.swing.text, which provides common text-based component features. Class JPasswordField (p. 485) extends JTextField and adds several methods that are specific to processing passwords.
• A JPasswordField (p. 485) shows that characters are being typed as the user enters them, but hides the actual characters with echo characters (p. 485).
• A component receives the focus (p. 486) when the user clicks the ...
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