title lang meta スポンサー ja name content description JJUG CCC 2019 Fall/Japan Java User Group Cross Community Conference 2019 Fall name content keywords JJUG, Java, JJUG CCC 2019 Fall name content author JJUG name content twitter:card summary name content twitter:site @JJUG name content og:title JJUG CCC 2019 Fall | スポンサー name content og:type website name content og:url https://ccc2019fall.java-users.jp/sponsors/ name content og:image https://ccc2019fall.java-users.jp/assets/img/og_image.png name content og:site_name https://ccc2019fall.java-users.jp/ name content og:description JJUG CCC 2019 Fall/Japan Java User Group Cross Community Conference 2019 Fall
