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Questions and Answers
Which layout is the default for JPanel and Applet?
Which layout is the default for JPanel and Applet?
- CardLayout
- GridLayout
- BorderLayout
- FlowLayout (correct)
Which component class cannot be added to an applet?
Which component class cannot be added to an applet?
- Label
- Checkbox
- ScrollPane
- Menu (correct)
What does a checkbox consist of?
What does a checkbox consist of?
- Combination of a small triangle and a Label
- Combination of a small box and a Label (correct)
- Combination of a small circle and a Label
- Combination of a small oval and a Label
What does a Frame's ContentPane designate?
What does a Frame's ContentPane designate?
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What is a superclass of Textfield and TextArea classes used to create single-line and multiline textfields respectively?
What is a superclass of Textfield and TextArea classes used to create single-line and multiline textfields respectively?
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Study Notes
JPanel and Applet Layout
- The default layout for both JPanel and Applet is FlowLayout, which arranges components in a left-to-right flow, similar to how text is displayed in a paragraph.
Components in Applet
- The component class that cannot be added to an applet is the Menu component. Menus must be used within a Frame or Dialog, not directly in an applet.
Checkbox Components
- A checkbox consists of a visual box that can be checked or unchecked, along with an associated label. This allows users to make binary selections within a user interface.
Frame's ContentPane
- The ContentPane of a Frame is the primary container that holds components. It designates the area where user interface elements such as buttons, labels, and text fields are placed.
Superclass of TextField and TextArea
- The superclass of TextField and TextArea classes is TextComponent. This abstract class serves as the foundation for creating single-line and multi-line text input fields, providing common features and functionalities for text handling.
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