@startuml
skinparam titleFontColor #0000FF
title Class \n__Example__
 
/' Multiple lines comment starts here:
    avoid class name with space
'/
class "My Class"{
}
 
class Company{
    -name: String
    #protectedVar: Int
    ~packagePrivateVar: Object[]
    +publicVar: Char
}
class Employee{
    -name: String
}
 
'Dynamically add fields and methods to existing class.
Employee : Total : int
Employee : void doSomeWork()
Employee : -void getPrivate()
Employee : #void getProtected()
Employee : ~void getPackagePrivate()
Employee : +void getPublic()
 
Employee --> Company
"My Class" --|> Company: Extension
 
left footer
<font color=red>Warning:</font>
This is a footer.
endfooter
@enduml

@startuml
skinparam monochrome true
skinparam shadowing false
' skinparam objectBackgroundColor white
 
object "My user" as user {
    id = 123
    name = "Dummy"
}
 
'Dynamically add field.
user : newField
 
@enduml

@startuml
 
[Component description] as component_desc
() "Interface\n desc (up)" as interface_desc
() "Left side" as left
() "Right side" as right
() "Down" as down
 
component_desc -up-> interface_desc: go up
component_desc -down-> down: go down
component_desc -left-> left: go left
component_desc -right-> right: go right
 
@enduml

# Check whether GraphViz is installed.
java -jar plantuml.jar -testdot
 
# Generate diagram in PNG format.
java -jar plantuml.jar -tpng input.puml
 
# List all parameters, especially skinparam.
java -jar plantuml.jar -language

@startuml
<style>
group {
    BackgroundColor green
    LineStyle 5
    LineThickness 3
}
package {
    BackgroundColor palegreen
    LineStyle 2
    LineThickness 2
}
 
</style>
 
package package1 {
node n
package p
}
 
@enduml