design-pattern-uml/out/singleton-pattern/singleton-pattern-config-file.svg

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@startuml singleton-pattern-config-file

interface Configuration {
  + read(k:Stirng):Object
  + save(k:String,v:Object):void
}

class GameConfiguration {
  {static} - _INSTANCE:Configuration
  - GameConfiguration()
  {static} + sharedConfiguration():Configuration
}

Configuration <|.. GameConfiguration

GameConfiguration o- - Configuration

@enduml

PlantUML version 1.2018.12(Sun Oct 21 18:15:15 CST 2018)
(GPL source distribution)
Java Runtime: Java(TM) SE Runtime Environment
JVM: Java HotSpot(TM) 64-Bit Server VM
Java Version: 1.8.0_171-b11
Operating System: Mac OS X
OS Version: 10.14.3
Default Encoding: UTF-8
Language: zh
Country: CN
--></g></svg>