$ sudo apt install openj
openjade openjdk-11-jre openjdk-8-doc openjdk-8-jre-zero
openjdk-11-dbg openjdk-11-jre-headless openjdk-8-jdk openjdk-8-source
openjdk-11-demo openjdk-11-jre-zero openjdk-8-jdk-headless openjfx
openjdk-11-doc openjdk-11-source openjdk-8-jre openjfx-source
openjdk-11-jdk openjdk-8-dbg openjdk-8-jre-dcevm
openjdk-11-jdk-headless openjdk-8-demo openjdk-8-jre-headless
My question is ubuntu shows openjdk-11 in their ppa, but why it doesn't show openjdk-10, although openjdk-10 is stable release and openjdk-11 is in development.