Java Swing - O Reilly Creates a new exception (Jetty web server)
Java Swing - O Reilly Creates a new exception as a result of an attempt to access the specified offset. 20.1.18.2 Methods public int offsetRequested() Returns the offending offset that caused the exception to be thrown. 20.1.19 Model Summary So Far In this chapter, we’ve defined all of the abstractions that make up the Swing document model. Before going on, let’s briefly review the interfaces and classes we’ve covered so far. Document This is the root of the text model. Each Swing text component references a Document model that stores its text. We also looked at AbstractDocument, an abstract class that implements Document and defines some default behavior, including document locking. Element Documents are partitioned by Elements. An Element contains a pair of offsets into a document, referencing a collection of text with a common set of attributes. AbstractDocument defines three inner classes that implement this interface: AbstractElement, LeafElement, and BranchElement. AttributeSet Each Element of a Document is defined, in part, by an arbitrary set of attributes called an AttributeSet. Attribute values in an AttributeSet are arbitrary Objects, accessible by unique keys (also Objects). MutableAttributeSet An extension of AttributeSet that allows attributes to be added and removed. We also looked at SimpleAttributeSet, a default implementation of MutableAttributeSet that uses a Hashtable to implement the interface. Position A Position is simply an unchanging point within a document. It is more stable than an offset, since it moves with its attached text. Segment A Segment is a simple container for an array of characters used to allow fast access to some segment of text. AbstractDocument.Content - 642
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