1Key Meaning
2"file.separator" Character that separates components of a file path. This is "/" on UNIX and "\" on Windows.
3"java.class.path" Path used to find directories and JAR archives containing class files. Elements of the class path are separated by a platform-specific character specified in the path.separator property.
4"java.home" Installation directory for Java Runtime Environment (JRE)
5"java.vendor" JRE vendor name
6"java.vendor.url" JRE vendor URL
7"java.version" JRE version number
8"line.separator" Sequence used by operating system to separate lines in text files
9"os.arch" Operating system architecture
10"os.name" Operating system name
11"os.version" Operating system version
12"path.separator" Path separator character used in java.class.path
13"user.dir" User working directory
14"user.home" User home directory
15"user.name" User account name