正版 Effective Java英文版 第3版 Effective Java编程教程书籍 自学Ef epub pdf mobi txt 电子书 下载 2024

正版 Effective Java英文版 第3版 Effective Java编程教程书籍 自学Ef epub pdf mobi txt 电子书 下载 2024

正版 Effective Java英文版 第3版 Effective Java编程教程书籍 自学Ef epub pdf mobi txt 电子书 下载 2024

著    者：（美）Joshua Bloch（约书亚·布洛克）

作 译 者：Joshua Bloch（约书亚·布洛克）

出版时间：2018-06    千 字 数：506

版    次：01-01    页    数：404

开    本：16开

装    帧：

I S B N ：9787121342608     

换    版：

所属分类：科技 >> 计算机 >> 编程语言

纸质书定价：￥99.0 

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Creating and Destroying Objects . . . . . . . . . . . . . . . . . . . . . 5

Item 1: Consider static factory methods instead of constructors . . . 5

Item 2: Consider a builder when faced with many constructor parameters . .. . . . . . . . 10

Item 3: Enforce the singleton property with a private constructor or an enum type . . .  . . . . . . . .  . . . . 17

Item 4: Enforce noninstantiability with a private constructor . . . . 19

Item 5: Prefer dependency injection to hardwiring resources . . . . 20

Item 6: Avoid creating unnecessary objects . . . . . . . . . . . . . . . . . 22

Item 7: Eliminate obsolete object references . . . . . . . . . . . . . . . . . 26

Item 8: Avoid finalizers and cleaners . . . . . . . . . . . . . . . . . . . . . . 29

Item 9: Prefer try-with-resources to try-finally. . . . . . . . . . . . 34

3 Methods Common to All Objects . . . . . . . . . . . . . . . . . . . . 37

Item 10: Obey the general contract when overriding equals . . . . . 37

Item 11: Always override hashCode when you override equals . . 50

Item 12: Always override toString . . . . . . . . . . . . . . . . . . . . . . . . 55

Item 13: Override clone judiciously . . . . . . . . . . . . . . . . . . . . . . . . 58

Item 14: Consider implementing Comparable . . . . . . . . . . . . . . . . 66

4 Classes and Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Item 15: Minimize the accessibility of classes and members . . . . . 73

Item 16: In public classes, use accessor methods, not public fields 78

Item 17: Minimize mutability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Item 18: Favor composition over inheritance . . . . . . . . . . . . . . . . . 87

Item 19: Design and document for inheritance or else prohibit it 93

Item 20: Prefer interfaces to abstract classes . . . . . . . . . . . . . . . . . 99

Item 21: Design interfaces for posterity . . . . . . . . . . . . . . . . . . . . 104

Item 22: Use interfaces only to define types. . . . . . . . . . . . . . . . . 107

Item 23: Prefer class hierarchies to tagged classes . . . . . . . . . . . . 109

Item 24: Favor static member classes over nonstatic . . . . . . . . . . 112

Item 25: Limit source files to a single top-level class . . . . . . . . . 115

5 Generics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Item 26: Don’t use raw types . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Item 27: Eliminate unchecked warnings. . . . . . . . . . . . . . . . . . . . 123

Item 28: Prefer lists to arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Item 29: Favor generic types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Item 30: Favor generic methods . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Item 31: Use bounded wildcards to increase API flexibility . . . . 139

Item 32: Combine generics and varargs judiciously. . . . . . . . . . . 146

Item 33: Consider typesafe heterogeneous containers . . . . . . . . . 151

6 Enums and Annotations . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Item 34: Use enums instead of int constants. . . . . . . . . . . . . . . . 157

Item 35: Use instance fields instead of ordinals . . . . . . . . . . . . . . 168

Item 36: Use EnumSet instead of bit fields . . . . . . . . . . . . . . . . . . 169

Item 37: Use EnumMap instead of ordinal indexing. . . . . . . . . . . . 171

Item 38: Emulate extensible enums with interfaces . . . . . . . . . . . 176

Item 39: Prefer annotations to naming patterns . . . . . . . . . . . . . . 180

Item 40: Consistently use the Override annotation. . . . . . . . . . . 188

Item 41: Use marker interfaces to define types . . . . . . . . . . . . . . 191

7 Lambdas and Streams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Item 42: Prefer lambdas to anonymous classes . . . . . . . . . . . . . . 193

Item 43: Prefer method references to lambdas . . . . . . . . . . . . . . . 197

Item 44: Favor the use of standard functional interfaces . . . . . . . 199

Item 45: Use streams judiciously . . . . . . . . . . . . . . . . . . . . . . . . . 203

Item 46: Prefer side-effect-free functions in streams . . . . . . . . . . 210

Item 47: Prefer Collection to Stream as a return type. . . . . . . . . . 216

Item 48: Use caution when making streams parallel . . . . . . . . . . 222

8 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Item 49: Check parameters for validity . . . . . . . . . . . . . . . . . . . . . 227

Item 50: Make defensive copies when needed . . . . . . . . . . . . . . . 231

Item 51: Design method signatures carefully . . . . . . . . . . . . . . . . 236

Item 52: Use overloading judiciously . . . . . . . . . . . . . . . . . . . . . . 238

Item 53: Use varargs judiciously . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Item 54: Return empty collections or arrays, not nulls . . . . . . . . . 247

Item 55: Return optionals judiciously . . . . . . . . . . . . . . . . . . . . . . 249

Item 56: Write doc comments for all exposed API elements . . . . 254

9 General Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

Item 57: Minimize the scope of local variables . . . . . . . . . . . . . . . 261

Item 58: Prefer for-each loops to traditional for loops . . . . . . . . . 264

Item 59: Know and use the libraries . . . . . . . . . . . . . . . . . . . . . . . 267

Item 60: Avoid float and double if exact answers are required . 270

Item 61: Prefer primitive types to boxed primitives . . . . . . . . . . . 273

Item 62: Avoid strings where other types are more appropriate . . 276

Item 63: Beware the performance of string concatenation . . . . . . 279

Item 64: Refer to objects by their interfaces . . . . . . . . . . . . . . . . . 280

Item 65: Prefer interfaces to reflection . . . . . . . . . . . . . . . . . . . . . 282

Item 66: Use native methods judiciously. . . . . . . . . . . . . . . . . . . . 285

Item 67: Optimize judiciously . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286

Item 68: Adhere to generally accepted naming conventions . . . . . 289

10 Exceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293

Item 69: Use exceptions only for exceptional conditions . . . . . . . 293

Item 70: Use checked exceptions for recoverable conditions and runtime exceptions for programming errors . .  296

Item 71: Avoid unnecessary use of checked exceptions . . . . . . . . 298

Item 72: Favor the use of standard exceptions. . . . . . . . . . . . . . . . 300

Item 73: Throw exceptions appropriate to the abstraction. . . . . . . 302

Item 74: Document all exceptions thrown by each method. . . . . . 304

Item 75: Include failure-capture information in detail messages. . 306

Item 76: Strive for failure atomicity . . . . . . . . . . . . . . . . . . . . . . . 308

Item 77: Don’t ignore exceptions . . . . . . . . . . . . . . . . . . . . . . . . . 310

11 Concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311

Item 78: Synchronize access to shared mutable data . . . . . . . . . . 311

Item 79: Avoid excessive synchronization . . . . . . . . . . . . . . . . . . 317

Item 80: Prefer executors, tasks, and streams to threads . . . . . . . 323

Item 81: Prefer concurrency utilities to wait and notify . . . . . . 325

Item 82: Document thread safety . . . . . . . . . . . . . . . . . . . . . . . . . 330

Item 83: Use lazy initialization judiciously . . . . . . . . . . . . . . . . . 333

Item 84: Don’t depend on the thread scheduler . . . . . . . . . . . . . . 336

12 Serialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339

Item 85: Prefer alternatives to Java serialization . . . . . . . . . . . . . 339

Item 86: Im

正版 Effective Java英文版 第3版 Effective Java编程教程书籍 自学Ef epub pdf mobi txt 电子书 下载 2024