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D

daemons, 323, 407 data types

nonobject, 52

numeric, 53–54

object, 57–64

wrappers for, 62

databases, 138, 315–326

connecting to, 328–332, 336, 496

creating, 324

interaction with, 327, 480

normalizing, 326

querying, 328, 332–334, 411

relational, 322, 518

selection criteria, 318

setup, 318

updating, 336

DataSource class, 336

DataType class, 228

Date class, 81

Davidson, James Duncan, 216–217 Debian, 47, 322, 457, 463

debugging, 91, 103, 136, 148–151

adding information to class files, 120, 176 declarations, in JSP, 434

default statement, 67

DefaultTableModel class, 368

@deprecated tag (Javadoc), 120, 129

destroy(), 404, 407 dialogs (in GUI), 370–373

dismissed, 372

modal, 372

dir, 14

directories, 483–484

current working, 12, 20, 24, 29, 107, 121,

238

home, 107

directories (continued)

listing files in, 9, 15

parent, 12

permissions of, see permissions directory services, 482–487, 491, 494

Display class, 381, 384, 386–390

dispose(), 380, 388

DNS (Domain Name Service), 482–484, 487–491

Docbook, 221

doclets, 123, 126

@docRoot tag (Javadoc), 130

Document Style Semantics and Specification Language, see DSSSL

Document Type Definitions, see DTDs documentation, 122–131

comments, 127–131

links, 127, 130–131

doGet(), 404, 407, 412, 418, 427, 429

Domain Name Service, see DNS domains, 83

doPost(), 405, 407, 412, 418, 427, 429

DoS (Denial of Service) attacks, 489, 491

Double class, 333, 359

double type, 53–54

do-while statement, 68–69, 75

DriverManager class, 329, 336 DSSSL (Document Style Semantics and

Specification Language), 221

DTDs (Document Type Definitions), 220, 222

dump, 156

DynamicJava, 259