This package gives interfaces and classes for dealing with different types of events fired by AWT components. See the java.awt.AWTEvent class for details on the AWT event model. Events are fired by event sources. An event listener registers with an event source to receive notifications about the events of a particular type. This package defines events and event listeners, as well as event listener adapters, which are convenience classes to make easier the process of writing event listeners.
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what is mean by toolkit?
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This class is the abstract superclass of all actual implementations of the Abstract Window Toolkit.
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what is meant by media tracker class?
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This class is a utility class to track the status of a number of media objects.
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what is mean by frame?
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Frame is class which means the top level window.
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What is meant by GridBagLayout?
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The GridBagLayout class is a flexible layout manager that aligns components vertically and horizontally, without requiring that the components be of the same size.
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What is exception occurs in the fonts?
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The Exception Thrown by method create Font in the Font class to indicate that the specified font is bad.
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Explain the term IllegalCompnonetStateException?
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The error Signals that an AWT component is not in an appropriate state for the requested operation.
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What is meant by HeadlessException?
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It is Thrown when code that is dependent on a keyboard, display, or mouse is called in an environment that does not support a keyboard, display, or mouse.
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what is meant by illegal componentstate exception?
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The exception that signals that an AWT component is not in an appropriate state for the requested operation.
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What is meant by ComponentEvent?
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A low-level event which indicates that a component moved, changed size, or changed visibility also, the root class for the other component-level events.
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Define the Container Event?
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A low-level event which indicates that a container's contents changed because a component was added or removed.
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What is interface called Hierarchy Event?
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An event which indicates a change to the Component hierarchy to which a Component belongs.
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What is invocation event?
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An event which executes the run() method on a Runnable when dispatched by the AWT event dispatcher thread.
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Define the term focus event?
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It is a low-level event which indicates that a Component has gained or lost the input focus.
