What is button in AWT in Java?
Button is a control component that has a label and generates an event when pressed. When a button is pressed and released, AWT sends an instance of ActionEvent to the button, by calling processEvent on the button. The application can make use of the button’s action command as a messaging protocol.
Which action takes place while clicking a button in Java?
When the user clicks the onscreen button, the button fires an action event. This results in the invocation of the action listener’s actionPerformed method (the only method in the ActionListener interface). The single argument to the method is an ActionEvent object that gives information about the event and its source.
What GET button method returns?
getActionCommand. Returns the command name of the action event fired by this button. If the command name is null (default) then this method returns the label of the button.
What is getActionCommand in Java?
getActionCommand. public String getActionCommand() Returns the command string associated with this action. This string allows a “modal” component to specify one of several commands, depending on its state. For example, a single button might toggle between “show details” and “hide details”.
What does Action command do in Java?
Java lets us specify an “action command” string for buttons (and other components, like menu items, that can generate action events). The action command is less interesting than it sounds. It is just a String that serves to identify the component that sent the event.
What is AWT advance Java?
The Abstract Window Toolkit (AWT) is Java’s original platform-dependent windowing, graphics, and user-interface widget toolkit, preceding Swing. The AWT is part of the Java Foundation Classes (JFC) — the standard API for providing a graphical user interface (GUI) for a Java program.
What is the purpose of AWT?
Provides the classes necessary to create an applet and the classes an applet uses to communicate with its applet context. Contains all of the classes for creating user interfaces and for painting graphics and images.
Why AWT is used in Java?
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.
How is it different from AWT?
AWT stands for Abstract Window Toolkit….Difference between AWT and Swing in Java.
| S.NO | AWT | Swing |
|---|---|---|
| 1. | Java AWT is an API to develop GUI applications in Java | Swing is a part of Java Foundation Classes and is used to create various applications. |
| 2. | The components of Java AWT are heavy weighted. | The components of Java Swing are light weighted. |