Java Swing Basics Quiz

Frame Visibility

• Use setVisible(true) to show a frame in Swing.
• Other options like showFrame(), frameVisible(), and setVisibility() are not valid methods.

JRadioButton Import

• Import javax.swing.* to use the JRadioButton class.
• Alternatives like java.awt.*, java.swing.*, and javax.awt.* are incorrect.

Menu-Related Classes

• MenuComponent is the abstract superclass for all AWT menu-related classes.
• Other options such as MenuItem, Menu, and MenuBar are specific implementations.

AWT Components

• RadioButton is not an AWT class; it is a Swing component.
• Valid AWT classes include Button, CheckBox, and TextField.

Label Alignment Constants

• Alignment constants for a Label in AWT are LEFT, CENTER, and RIGHT.
• Other listed options do not correspond to label alignment.

Container Class Subclasses

• Subclasses of the Container class include Window, Panel, and ScrollPane.
• JFrame, JPanel, and JScrollPane are Swing classes, not direct subclasses of AWT's Container.

Non-Editable AWT Component

• Label is a non-editable AWT component, solely for display.
• TextField, TextArea, and Choice are interactive and editable components.

Multi-Line Text Entry

• TextArea is used for multi-line text input.
• TextField is for single-line input, while Label and List serve different functions.

Checkbox in Menu

• CheckBoxMenuItem represents a checkbox with a textual label in a menu.
• JCheckBox, Checkbox, and JCheckBoxMenuItem are less suitable for menus.

JTree Node Creation

• Use DefaultMutableTreeNode to create nodes within a JTree.
• Other options like TreeNode and MutableTreeNode serve different roles in the tree structure.

setSize() Method

• The setSize() method is defined in Component and inherited by Frame.
• While technically accurate for Component, Frame is a more recognized class to reference.

Drawing on Canvas

• Canvas provides a blank window specifically for drawing graphics.
• While Panel and JPanel are used for layout, they are not focused on graphics.

AWT Event Hierarchy

• AWTEvent is the top class in the AWT event hierarchy.
• Other classes like Event, ComponentEvent, and ActionEvent are subclasses or specialized events.

Test your knowledge on Java Swing with this quiz that covers visibility methods and essential packages. Perfect for beginners looking to solidify their understanding of the Swing framework. Answer questions related to frame visibility and other key concepts!