java程序获取jdk版本等信息

public class Test {
 public static void main(String[] args) {
  System.out.println(System.getProperty("user.home"));
  System.out.println(System.getProperty("java.version"));
  System.out.println(System.getProperty("os.name"));
  System.out.println(System.getProperty("java.vendor.url"));
 }
}