Mengambil Nilai System Properties

String username=System.getProperty("user.name");
String homedir=System.getProperty("user.home");
String userdir=System.getProperty("user.dir");
System.out.println("username :"+username);
System.out.println("home directory : "+homedir);
System.out.println("user directory : "+userdir);

/* nilai properties yang dapat diambil adalah :
"file.separator" File separator (for example, "/")
"java.class.path" Java classpath
"java.class.version" Java class version number
"java.home" Java installation directory
"java.vendor" Java vendor-specific string
"java.vendor.url" Java vendor URL
"java.version" Java version number
"line.separator" Line separator
"os.arch" Operating system architecture
"os.name" Operating system name
"os.version" Operating system version
"path.separator" Path separator (for example, ":")


*/