OpenJDK moved the core Java implementation into an open development model, pairing GPLv2 with the Classpath Exception and creating shared governance for a platform used by many vendors.
Sun's NFS combined a portable RPC protocol with kernel VFS integration and a deliberately stateless server model, making transparent remote file access practical across heterogeneous networks.
Java evolved from Sun's Oak project into a language and virtual-machine platform built around portability, managed memory and networked software.