N

name game, 111

names

See also identifiers; scope; Unicode character set

ambiguous

handling of, 89, 91

reclassification of, 91

(chapter), 77

class

naming conventions, 108

scope of, 130

conflicts

See also hiding

avoiding

in fields with multiple inheritance, 153

through context use, 89

through naming conventions, 106

constants, naming conventions, 109

conventions, 106

impact on name hiding, 84

expression

context in which a name is classified as, 91

qualified, meaning of, 96

simple, meaning of, 95

fields, naming conventions, 109

grammar specification difficulties, 433

hiding, 83

interface

member, access to, 186

naming conventions, 108

LALR(1) grammar, 441

meaning of, determining, 89

method, 156

context in which a name is classified as, 91

naming conventions, 108

qualified, meaning of, 98

simple, meaning of, 98

package

context in which a name is classified as, 90

hiding, 120

in compilation units, 118

limited significance for access control, 115

names

package

naming conventions, 107

qualified, meaning of, 93

scope of, 120

simple, meaning of, 93

unique, 125

importance of, 125

parameters, naming conventions, 110

qualified

access control and, 99

fully, 105

term definition, 79

resolving references to, during resolution phase of linking, 221

restrictions, types and subpackages, 114

rules on being the same

class members, 86

fields, 86

interface fields, 87

methods, 87

simple

scope of, 81

term definition, 79

as subset of identifiers, 79

syntactic

categories, 89

classification of according to context, 90

term definition, 79

type

context in which a name is classified as, 90

interface, scope of, 184

qualified, meaning of, 94

simple, meaning of, 93

variables, local, naming conventions, 110

NaN (Not-a-Number)

See also numbers

comparison results, 35

double, conversion to a float NaN, in narrowing conversion, 57

NaN field

of class Double, 511

of class Float, 504

predefined constants representing, 23

preventing use of algebraic identities in expression evaluation, 308

term definition and specification, 33

narrowing

See also conversion; numbers

primitive conversions

in assignment conversion context, 61

in casting conversion context, 67

not allowed in method invocation conversion context, reasons for, 66

specification, 55

reference conversions, specification, 59

native modifier

See also declarations; modifiers

methods

binary compatibility considerations, 256

declaration, 161

semicolon as body of, 164

not permitted in interface method declarations, 189

reasons why constructors cannot be, 178

NEGATIVE_INFINITY field

of class Double, 511

of class Float, 504

NegativeArraySizeException class, 611

network

standard exceptions

MalformedURLException, 211

ProtocolException, 211

SocketException, 211

UnknownHostException, 211

UnknownServiceException, 211

newInstance method

of class Class, 468

Newton, Sir Isaac, 1

next method

of class Random, 648

nextDouble method

of class Random, 649

nextElement method

of class StringTokenizer, 653

of interface Enumeration, 617

nextFloat method

of class Random, 649

nextGaussian method

of class Random, 650

nextInt method

of class Random, 648

nextLong method

of class Random, 648

nextNextGaussian field

of class Random, 647

nextToken method

of class StreamTokenizer, 717

of class StringTokenizer, 652

NoClassDefFoundError class, 611

NoClassDefFoundError class

non-public

classes, in example of qualified names and access control, 101

nonterminal symbols

See also grammars

definition of, notation for, 8

term definition, 7

NORM_PRIORITY field

of class Thread, 591

NoSuchElementException class, 664

NoSuchFieldError class, 611

NoSuchMethodError class, 611

NoSuchMethodException class, 611

Not-a-Number

See NaN (Not-a-Number)

notation

See also names, naming conventions

grammar, 8

notification

notify method, of class Object, 463

notifyAll method, of class Object, 463

notifyObservers method, of class Observable, 644

wait sets and, 416

null

literal, term definition and specification, 27

NullPointerException class, 611

type

literal as source code representation of the value of, 19

term definition and specification, 30

numbers

See also arithmetic; precision; types

conversions of and to, see conversions

errors in handling, see exceptions

manipulating, see

arithmetic

operators

Number class, 487

NumberFormatException class, 611

numeric promotion

binary, 74

specification, 72

term definition, 52

unary, 73

primitive types, see

byte type

char type

double type

float type

floating-point

int type

numbers

primitive types, see

integers

integral type

long type

short type

Random class, 646

related types, see

boolean

characters

strings

nval field

of class StreamTokenizer, 715

Nygaard, Kristen, 6

Contents | Prev | Next | Index

Java Language Specification (HTML generated by Suzette Pelouch on February 24, 1998)
Copyright © 1996 Sun Microsystems, Inc. All rights reserved
Please send any comments or corrections to doug.kramer@sun.com