Java to get Java information through code, such as virtual machine, version, PATH, etc.

Package Com.itm.path;public class testsystemproperty{public static void Main (string[] args) {System.out.println ("Ja    VA runtime Environment version: \ n "+system.getproperty (" java.version "));    System.out.println ("Java Runtime Environment vendor: \ n" +system.getproperty ("Java.vendor"));    System.out.println ("Url:\n of Java Vendor" +system.getproperty ("Java.vendor.url"));    System.out.println ("Java installation directory: \ n" +system.getproperty ("Java.home"));    System.out.println ("Java Virtual machine specification version: \ n" +system.getproperty ("java.vm.specification.version"));    System.out.println ("Java class format version number: \ n" +system.getproperty ("java.class.version"));    System.out.println ("Java classpath: \ n" +system.getproperty ("Java.class.path"));    SYSTEM.OUT.PRINTLN ("List of paths searched when loading library: \ n" +system.getproperty ("Java.library.path"));    SYSTEM.OUT.PRINTLN ("Default temporary file path: \ n" +system.getproperty ("Java.io.tmpdir"));    System.out.println ("Name of the JIT compiler to use: \ n" +system.getproperty ("Java.compiler"));    SYSTEM.OUT.PRINTLN ("Path to one or more extended directories: \ n" +system.getproperty ("Java.ext.dirs")); System.out.println ("Name of the operating system: \ n"+system.getproperty (" Os.name "));    SYSTEM.OUT.PRINTLN ("Architecture of the operating system: \ n" +system.getproperty ("Os.arch"));    SYSTEM.OUT.PRINTLN ("OS version: \ n" +system.getproperty ("os.version"));    System.out.println ("File delimiter (in UNIX system is"/"): \ n" +system.getproperty ("File.separator"));    SYSTEM.OUT.PRINTLN ("Path delimiter (in UNIX system is": "): \ n" +system.getproperty ("Path.separator"));    SYSTEM.OUT.PRINTLN ("The line delimiter (in UNIX system is"/n "): \ n" +system.getproperty ("Line.separator"));    System.out.println ("User's account name: \ n" +system.getproperty ("User.Name"));    System.out.println ("User's home directory: \ n" +system.getproperty ("User.home"));    System.out.println ("User's current working directory: \ n" +system.getproperty ("User.dir")); System.out.println ("uri notation for the absolute path of the current classpath:---->>: \ n" + thread.currentthread (). Getcontextclassloader ().    GetResource ("")); System.out.println ("Gets the URI directory of the current class Filetest.class file. Don't include yourself!    : \ n "+testsystemproperty.class.getresource (")); System.out.println ("Gets the absolute URI path of the current classpath.    : \ n "+ TestSystemproperty.class.getResource ("/")); }}

　　

Java to get Java information through code, such as virtual machine, version, PATH, etc.