The delimiter of segments in a path. For example in Linux: /home/user/documents or Windows: C:\Program Files\Notepad.EXE
Check if a file exists at the path.
Get a map of all JVM system properties.
Get an environment variable or null
Get a system property (on supported platforms)
Read the contents of a file as a String or return null on any error.
Write the contents of a file. File will be created if it doesn't exist. Existing files will be overwritten.
Get a map of all environment variables.
Get the operating system info