E


else, 317–320

else if, 318–320

encapsulation, 82–85

benefits of, 83

how to include in code design, 83–84

problem of lack of, 85

two-minute drill, 153

enhanced for loops (for arrays), 338–340

entry point, 326–527

enums

in case statement, 326

declaration of class members, 60–65

equality (== and !=) operators for, 282–283

switch statements and, 324

two-minute drill, 73

equality (== and !=) operators

boxing and, 235

for enums, 282–283

equals() compared with, 524

overview, 280

for primitives, 280–281

for references variables, 281–282

equals(), 524–529

contract in Java does, 529

implementing, 526–528

not overriding, 525–526

Object class, 524–529

overriding, 524–525

public methods, 528

two-minute drill, 606–607

equalsIgnoreCase(), 422

Error class

compared with Exception, 363–364

in exception hierarchy, 354–355

error messages

"An exception occurs at runtime," 338

"Compilation fails," 338

errors

common exceptions and errors, 366–367, 370

scoping errors, 191–192

Exception class

compared with Error, 363–364

exception hierarchy and, 354–355

overview, 353–354

exception handling

common exceptions and errors, 366–367, 370

defining exceptions, 353–354

exception declaration and public interface, 359–364

exception hierarchy, 354–355

exception matching, 357–359

exercise creating an exception, 365–366

exercise propagating and catching an exception, 352–353

finally, 347–349

handling entire class hierarchy of exceptions, 356–357

JVM thrown exceptions, 367–368

overview, 344–345

programmatically thrown exceptions, 368–369

propagating uncaught exceptions, 350–352

rethrowing exceptions, 364–365

self test answers, 399–410

self test questions, 389–398

sources of exceptions, 367

try and catch, 345–347

two-minute drill, 387

exception matching, 357–359

"An exception occurs at runtime," 338

expression aspect, for statements, 339

expression rules, assertions, 373–374

extends, 120–121




SCJP Sun Certified Programmer for Java 5 Study Guide Exam 310-055
SCJP Sun Certified Programmer for Java 5 Study Guide (Exam 310-055) (Certification Press)
ISBN: 0072253606
EAN: 2147483647
Year: 2006
Pages: 131

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