System: getProperties()
/* * Output: -- listing properties -- java.runtime.name=Java(TM) 2 Runtime Environment, Stand... java.vm.version=1.5.0-b64 java.vm.vendor=Sun Microsystems Inc. java.vendor.url=http://java.sun.com/ path.separator=; java.vm.name=Java HotSpot(TM) Client VM file.encoding.pkg=sun.io user.country=US sun.os.patch.level=Service Pack 2 java.vm.specification.name=Java Virtual Machine Specification java.runtime.version=1.5.0-b64 java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment ... ... */ import java.util.Properties; public class MainClass { public static void main(String[] args) { Properties properties = System.getProperties(); properties.list(System.out); } }