how to read/write class at class diagram

element of class: name(can’t be omitted), attribute, method

the way to write attribute

• {access controller} {attribute name} : {type}

the way to write method

• {access controller} {method name}({parameter}) : {return type}

attribute indicator

• +: public
• -: private
• #: protected
• ~: default
• {readonly}: final
• underline: static
• [*] or [0…1]: size of assigned to attribute
  • [*] → size undefined
  • [0..1] → the size of optional will be 0 or 1