一直在画图, 原来可以码图, 使用语言来描述各种图，类图，泳道图，流程图等.

参考
http://www.ibm.com/developerworks/cn/opensource/os-cn-ecl-plantuml/index.html
http://plantuml.com/unicode
http://archive.3zso.com/archives/plantuml-quickstart.html

1.idea打开setting
2.找到pulgin. add plantuml integration
3.可能遇到，cannot find Graphviz，安装Graphviz
4.画个图试试吧

Graphviz的windows版本可以去网上搜索安装.
这个地址：http://graphviz.org/pub/graphviz/stable/windows/graphviz-2.38.msi

@startuml

abstract class AbstractList
abstract AbstractCollection
interface List
interface Collection

List <|-- AbstractList
Collection <|-- AbstractCollection

Collection <|- List
AbstractCollection <|- AbstractList
AbstractList <|-- ArrayList

class ArrayList {
Object[] elementData
size()
}

enum TimeUnit {
DAYS
HOURS
MINUTES
}

@enduml