Questions and Answers
The various controls supported by AWT are?
The concept of the menu bar can be implemented by using three Java classes—?
What is the constructor that the Text Event class defines?
TextEvent(Object source, int event_type)
In Java an event is an _______ which specifies the change of state in the source.
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The classes and interfaces defined in AWT are contained within the ______ package.
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What is the general form to set a specific type of layout manager?
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The AWT container is an instance of the ___________ class?
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A checkbox is a control that consists of?
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Java applets are used to create _______________ applications?
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AWT means?
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An event is generated when the internal state of the event source is________?
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Positions the components into five regions: east, west, north, south, center?
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Arranges the components as a deck of cards such that only one component is visible at a time?
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Arranges the components horizontally?
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Arranges the components into a grid?
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__________ creates a dropdown list of textual entries?
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The Component class is an abstract class and so its ____________ are used to create components?
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The AWT classes can be roughly categorized into the following groups?
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An Applet is a ________ of Panel?
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The subclasses of Window are?
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A menu bar represents?
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Each menu is associated with a _________ list of menu items?
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The two types of menus which are given as follows?
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Regular menus are placed at the __________ of the application window within a menu bar?
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The text field and text area controls create a _________________ area respectively?
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A push button is an active control that has a _____________ appearance?
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_____________ is a superclass of TextField and TextArea classes that is used to create single-line or multiline textfields respectively?
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A label is a simple control which is used to display_____________ on the window?
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______________ is an abstract class that encapsulates all of the attributes of a visual component?
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A _______ object is responsible for remembering the current foreground and background colors?
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Which class is a subclass of Component?
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The ______ class is a concrete subclass of Container?
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Study Notes
Abstract Windowing Toolkit (AWT)
- AWT provides various controls, including labels, push buttons, checkboxes, choices, lists, scroll bars, text areas, and text fields.
- Menu bars in AWT can be implemented using MenuBar, Menu, and MenuItem classes.
- The TextEvent class constructor is defined as
TextEvent(Object source, int event_type). - An event in Java is an object specifying the change of state in the source.
- Classes and interfaces in AWT are located within the
java.awt.*package. - The general form to set a specific type of layout manager is
void setLayout(LayoutManager lm). - AWT containers are instances of the Container class, which holds various components and other containers.
- A checkbox consists of a combination of a small box and a label, enabling binary selections.
- Java applets are primarily used for creating graphical and user-interactive applications.
- AWT stands for Abstract Window Toolkit.
- An event is generated when the internal state of the event source is changed.
- The BorderLayout positions components into five regions: east, west, north, south, and center.
- CardLayout arranges components like a deck of cards, showing only one at a time.
- FlowLayout arranges components horizontally.
- GridLayout arranges components into a grid format.
- The Choice control creates a dropdown list of textual entries.
- The Component class is abstract, with subclasses being used to create actual components.
- AWT classes are categorized into GUI Components, Layouts, Graphics Tools, and Event Handlers.
- An Applet is a subclass of the Panel class.
- Subclasses of Window include Dialog and Frame.
- A menu bar displays a list of menus at the top of a top-level window.
- Each menu is associated with a drop-down list of menu items.
- Two types of menus in AWT are pop-up menus and regular menus.
- Regular menus are positioned at the top of the application window within a menu bar.
- Text field creates a single-line text area, while text area creates a multi-line text area.
- A push button is an active control that typically has a three-dimensional appearance.
- TextComponent is the superclass of TextField and TextArea classes, enabling single-line or multiline text inputs.
- A label is used to display non-editable text on the window.
- The Component class encapsulates attributes of visual components.
- A Component object remembers the current foreground and background colors.
- Container is a subclass of Component.
- The Window class is a concrete subclass of Container.
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Description
Test your knowledge on Abstract Windowing Toolkit (AWT) in this Unit 1 quiz. This quiz covers various controls supported by AWT, menu bar implementation through Java classes, and the Text Event class constructor. Challenge yourself to score high and deepen your understanding of Java AWT.
