openjdk-8-source 8u171-b11-0ubuntu0.18.04.1 (armhf binary) in ubuntu bionic

 OpenJDK is a development environment for building applications,
 applets, and components using the Java programming language.
 .
 This package contains the Java programming language source files
 (src.zip) for all classes that make up the Java core API.
 .
 The packages are built using the IcedTea build support and patches
 from the IcedTea project.