import java.lang.*; import java.security.*; class GetProps { public static void main(String[] args) { /* Test reading properties w & w/out security manager */ String s; try { System.out.println("About to get os.name property value"); s = System.getProperty("os.name", "not specified"); System.out.println(" The name of your operating system is: " + s); System.out.println("About to get java.version property value"); s = System.getProperty("java.version", "not specified"); System.out.println(" The version of the JVM you are running is: " + s); System.out.println("About to get user.home property value"); s = System.getProperty("user.home", "not specified"); System.out.println(" Your user home directory is: " + s); System.out.println("About to get java.home property value"); s = System.getProperty("java.home", "not specified"); System.out.println(" Your JDK installation directory is: " + s); } catch (Exception e) { System.err.println("Caught exception " + e.toString()); } } }