java 138Java Virtual Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. 1.4 Building Blocks of 138. 4.5 APIs, Packages, and JavadocThe official Reference Implementation for Java SE 13 is based solely upon open-source code available from the JDK 13 Project in the OpenJDK Community. The binaries are available