Programming and Problem Solving with Java

757

sentinel-controlled loops, 225–227
testing, 253–254
Event counter, 233, 256
Event handlers, 385, 398
extending in CopyStringclass, 410
reading data in, 398–401
Event handling, 385, 386
button creation, 385–387
creating/registering button event
listener, 387–390
event loops, 393–394
example of, 390–393
Event listeners, 385
creating, 387–390
registering, 387–390, 420, 421
Event loops, 393, 394 , 395, 421
Event source, 385, 389–390, 420
Events, 223, 385
Exceptionclasses, 437–438
Exception handler, 432
Exception-handling mechanism, 432–438
exception classes, 437–438
generating an exception with throw,
435–437
three parts to, 432
try-catch-finally statement, 432–435
Exceptionobjects, 437
Exceptions, 72, 130
catching/forwarding, 467
and testing, 466
throwing, 467, 468
Executable statement, 74
Executing applications, 20
Executing programs, 8
Execution
compilation related to, 14–15
tests performed during, 194
Execution trace, 191, 197
Exit condition, and event loop, 394, 420
exitmethod, 411
EXIT_ON_CLOSE, 378
Explicit casting, 196
Explicit type casting, 118, 157
Explicit type casts, 117, 140, 619
Exponential class algorithms, 455
Exponents, for floating-point values, 105
Exposed implementation, encapsulated
implementation versus, 178

Expressions, 60, 70

with arithmetic operators and their val-

ues, 109–110

avoid mixing integer and floating-point

values in, 140

calculations performed with, 108

equivalent, 162

and for statement, 447

index as, 490

mixing types within, 141

relational, 156

Expression statement, 450

extends clause, 337, 346

Extensibility, 19

External access, levels of, 367

External documentation, 299

External representation, 339

External scope, 342–345, 367

External scope rules, 345

F

FactIntapplet, HTML document causing

execution of, 669

FactIntclass, screen shots for, 663 , 664

Factorialclass algorithms, 455

Factorialfunction

applet written for, 661–664

calculating, 638–641

factorialmethod, execution of, 640

Factorial problem, code comparison for it-

erative and recursive versions of,

640–641

False assertions, 154

falsevalue

and boolean data type, 155, 156

and if-else form, 168

and logical expressions, 197

Fanning, Shawn, 658

Fear of starting, 28–29

Federal Information Processing Standard,

374

Fermat, Pierre de, 121

Fetch-execute cycle, 21

Field, 47, 420

FieldContents, 398

Field declarations, 54–59, 64, 71, 74, 75, 273

Fields, 50, 54, 58–59, 70, 73, 88, 274

in frame and data entry, 394–395