EffectiveJavaJoshuaBloch人民邮电出版社9787115211316
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山东枣庄
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作者Joshua Bloch
出版社人民邮电出版社
ISBN9787115211316
出版时间2009-09
装帧其他
定价39元
货号9787115211316
上书时间2025-01-05
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1 introduction 1
\n2 creating and destroying objects 5
\nitem 1: consider static factory methods instead of constructors 5
\nitem 2: consider a builder when faced with many constructor parameters 11
\nitem 3: enforce the singleton property with a private constructor or an enum type 17
\nitem 4: enforce noninstantiability with a private constructor 19
\nitem 5: avoid creating unnecessary objects 20
\nitem 6: eliminate obsolete object references 24
\nitem 7: avoid finalizers 27
\n3 methods common to all objects 33
\nitem 8: obey the general contract when overriding equals 33
\nitem 9: always override hashcode when you overrideequals 45
\nitem 10: always override tostring 51
\nitem 11: override clone judiciously 54
\nitem 12: consider implementing comparable 62
\n4 classes and interfaces 67
\nitem 13: minimize the accessibility of classes and members 67
\nitem 14: in public classes, use accessor methods, not public fields 71
\nitem 15: minimize mutability 73
\nitem 16: favor composition over inheritance 81
\nitem 17: design and document for inheritance or else prohibit it 87
\nitem 18: prefer interfaces to abstract classes 93
\nitem 19: use interfaces only to define types 98
\nitem 20: prefer class hierarchies to tagged classes 100
\nitem 21: use function objects to represent strategies 103
\nitem 22: favor static member classes over nonstatic 106
\n5 generics 109
\nitem 23: don't use raw types in new code 109
\nitem 24: eliminate unchecked warnings 116
\nitem 25: prefer lists to arrays 119
\nitem 26: favor generic types 124
\nitem 27: favor generic methods 129
\nitem 28: use bounded wildcards to increase api flexibility 134
\nitem 29: consider typesafe heterogeneous containers 142
\n6 enums and annotations 147
\nitem 30: use enums instead of int constants 147
\nitem 31: use instance fields instead of ordinals 158
\nitem 32: use enumset instead of bit fields 159
\nitem 33: use enummap instead of ordinal indexing 161
\nitem 34: emulate extensible enums with interfaces 165
\nitem 35: prefer annotations to naming patterns 169
\nitem 36: consistently use the override annotation 176
\nitem 37: use marker interfaces to define types 179
\n7 methods 181
\nitem 38: check parameters for validity .. 181
\nitem 39: make defensive copies when needed 184
\nitem 40: design method signatures carefully 189
\nitem 41: use overloading judiciously 191
\nitem 42: use varargs judiciously 197
\nitem 43: return empty arrays or collections, not nulls 201
\nitem 44: write doc comments for all exposed api elements 203
\n8 general programming 209
\nitem 45: minimize the scope of local variables 209
\nitem 46: prefer for-each loops to traditional for loops 212
\nitem 47: know and use the libraries 215
\nitem 48: avoid float and double if exact answers are required 218
\nitem 49: prefer primitive types to boxed primitives 221
\nitem 50: avoid strings where other types are more appropriate 224
\nitem 51: beware the performance of string concatenation 227
\nitem 52: refer to objects by their interfaces 228
\nitem 53: prefer interfaces to reflection 230
\nitem 54: use native methods judiciously 233
\nitem 55: optimize judiciously 234
\nitem 56: adhere to generally accepted naming conventions 237
\n9 exceptions 241
\nitem 57: use exceptions only for exceptional conditions 241
\nitem 58: use checked exceptions for recoverable conditions and runtime exceptions for programming errors 244
\nitem 59: avoid unnecessary use of checked exceptions 246
\nitem 60: favor the use of standard exceptions 248
\nitem 61: throw exceptions appropriate to the abstraction 250
\nitem 62: document all exceptions thrown by each method 252
\nitem 63: include failure-capture information in detail messages 254
\nitem 64: strive for failure atomicity 256
\nitem 65: don't ignore exceptions 258
\n10 concurrency 259
\nitem 66: synchronize access to shared mutable data 259
\nitem 67: avoid excessive synchronization 265
\nitem 68: prefer executors and tasks to threads 271
\nitem 69: prefer concurrency utilities to wait and notify 273
\nitem 70: document thread safety 278
\nitem 71: use lazy initialization judiciously 282
\nitem 72: don't depend on the thread scheduler 286
\nitem 73: avoid thread groups 288
\n11 serialization 289
\nitem 74: implement serializable judiciously 289
\nitem 75: consider using a custom serialized form 295
\nitem 76: write readobject methods defensively 302
\nitem 77: for instance control, prefer enum types toreadresolve 308
\nitem 78: consider serialization proxies instead of serialized instances 312
\nappendix: items corresponding to first edition 317
\nreferences 321
\nindex 327
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