What is the class hierarchy of AWT?

What is the class hierarchy of AWT?

There are four types of containers available in AWT: Window, Frame, Dialog and Panel. As shown in the hierarchy diagram above, Frame and Dialog are subclasses of Window class. Dialog: Dialog class has border and title.

Which class is on top of AWT hierarchy?

Explanation: The java. awt. AWTEvent class is the highest-level class in the AWT event class hierarchy.

What is AWT and represent hierarchy of AWT?

AWT is heavy weight i.e. its components are using the resources of underlying operating system (OS). The java. awt package provides classes for AWT API such as TextField, Label, TextArea, RadioButton, CheckBox, Choice, List etc.

What are the classes of Java AWT package?

Package java. awt

Class Description
MenuBar The MenuBar class encapsulates the platform’s concept of a menu bar bound to a frame.
MenuComponent The abstract class MenuComponent is the superclass of all menu-related components.
MenuItem All items in a menu must belong to the class MenuItem , or one of its subclasses.

Which of the following is the base class of all AWT classes?

abstract Component class
The abstract Component class is the base class for the AWT. Many AWT classes are derived from it. These are the old AWT components that are no longer in use. Some of the AWT classes derived from Component are Button , Canvas , and Container .

What is significance of AWT class?

Java AWT (Abstract Window Toolkit) is an API to develop GUI or window-based applications in java. Java AWT components are platform-dependent i.e. components are displayed according to the view of operating system. AWT is heavyweight i.e. its components are using the resources of OS.

How many classes are there in AWT?

The AWT provides nine basic non-container component classes from which a user interface may be constructed. (Of course, new component classes may be derived from any of these or from class Component itself.) These nine classes are class Button, Canvas, Checkbox, Choice, Label, List, Scrollbar, TextArea, and TextField.

What is the parent class of the AWT component class?

MenuComponent is an abstract class and is the superclass for all menu-related components.

What is Java AWT package in Java?

The java. awt package is the main package of the AWT, or Abstract Windowing Toolkit. It contains classes for graphics, including the Java 2D graphics capabilities introduced in the Java 2 platform, and also defines the basic graphical user interface (GUI) framework for Java.

What are all the five AWT classes in java applet?

The Component class is the abstract parent of the nonmenu-related AWT components.

  • Button (java. awt.
  • Checkboxes (java. awt.
  • Radio Buttons (java. awt.
  • Choice Buttons (java. awt.
  • Labels (java. awt.
  • TextFields (java.awt.TextField) Are areas where the user can enter text.
  • An Example Component Application.

What is AWT discuss any eight AWT classes?

awt package that supports various AWT controls like Label, Button, CheckBox, CheckBox Group, List, Text Field, Text Area, Choice, Canvas, Image, Scrollbar, Dialog, File Dialog, etc that creates or draw various components on web and manage the GUI based application.

What are AWT components?

AWT Components

  • Containers. Container in Java AWT is a component that is used to hold other components such as text fields, buttons, etc.
  • Button. java.awt.Button class is used to create a labeled button.
  • Text Field.
  • Label.
  • Canvas.
  • Choice.
  • Scroll Bar.
  • List.

What are all the five AWT classes in Java applet?

What are awt components?

What are the features of awt?

AWT features include:

  • A set of native user interface components.
  • A robust event-handling model.
  • Graphics and imaging tools, including shape, color, and font classes.
  • Layout managers, for flexible window layouts that do not depend on a particular window size or screen resolution.

What are AWT classes and controls discuss?

A Component is an abstract super class for GUI controls and it represents an object with graphical representation….AWT UI Elements:

Sr. No. Control & Description
1 Label A Label object is a component for placing text in a container.
2 Button This class creates a labeled button.

What is AWT used for?

Abstract Window Toolkit (AWT) is a set of application program interfaces ( API s) used by Java programmers to create graphical user interface ( GUI ) objects, such as buttons, scroll bars, and windows. AWT is part of the Java Foundation Classes ( JFC ) from Sun Microsystems, the company that originated Java.

What is AWT list out AWT controls?

Following is the list of commonly used controls while designed GUI using AWT….AWT UI Elements:

Sr. No. Control & Description
1 Label A Label object is a component for placing text in a container.
2 Button This class creates a labeled button.

What are the different types of controls in AWT *?

AWT supports the following types of controls: Labels, push buttons, check boxes, check box groups, lists, scroll bars, text fields etc.