System.getProperty : Runtime System « Development « Java Tutorial

1. Java Tutorial
2. Development
3. Runtime System

class ShowUserDir {
  public static void main(String args[]) {
    System.out.println(System.getProperty("user.dir"));
  }
}
The following properties are available:

file.separator

java.specification.version

java.vm.version

java.class.path

java.vendor

line.separator

java.class.version

java.vendor.url

os.arch

java.compiler

java.version

os.name

java.ext.dirs

java.vm.name

os.version

java.home

java.vm.specification.name

path.separator

java.io.tmpdir

java.vm.specification.vendor

user.dir

java.library.path

java.vm.specification.version

user.home

java.specification.name

java.vm.vendor

user.name

java.specification.vendor