// objects/ShowProperties.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.

public class ShowProperties {
  public static void main(String[] args) {
    System.getProperties().list(System.out);
    System.out.println(System.getProperty("user.name"));
    System.out.println(
      System.getProperty("java.library.path"));
  }
}
/* Output: (First 20 Lines)
-- listing properties --
java.runtime.name=Java(TM) SE Runtime Environment
sun.boot.library.path=C:\Program
Files\Java\jdk1.8.0_102\jr...
java.vm.version=25.102-b14
java.vm.vendor=Oracle Corporation
java.vendor.url=http://java.oracle.com/
path.separator=;
java.vm.name=Java HotSpot(TM) 64-Bit Server VM
file.encoding.pkg=sun.io
user.script=
user.country=US
sun.java.launcher=SUN_STANDARD
sun.os.patch.level=
java.vm.specification.name=Java Virtual Machine
Specification
user.dir=C:\Users\bruce\Documents\Git\on-java\...
java.runtime.version=1.8.0_102-b14
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=C:\Program Files\Java\jdk1.8.0_102\jr...
os.arch=amd64
java.io.tmpdir=C:\Users\bruce\AppData\Local\Temp\
                  ...
*/