获取系统信息

public class ss {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
SimpleDateFormat   lFormat;
Calendar   cal   =   Calendar.getInstance();
Date   time   =   cal.getTime();
lFormat   =     new   SimpleDateFormat( "yyyy-MM-dd HH:mm:ss ");
        String   gRtnStr   =   lFormat.format(time);
System.out.println("time:"+ gRtnStr);
System.out.println(System.getProperty("os.name"));  
        System.out.println(System.getProperty("os.arch"));  
        System.out.println(System.getProperty("os.version"));  
        System.out.println(System.getProperty("file.separator"));  
        System.out.println(System.getProperty("path.separator"));  
        System.out.println(System.getProperty("line.separator"));  
        System.out.println(System.getProperty("user.name"));  
        System.out.println(System.getProperty("user.home"));                  
        System.out.println(System.getProperty("user.dir"));
        System.out.println(System.getProperty("java.version"));  
        System.out.println(System.getProperty("java.vendor"));  
        System.out.println(System.getProperty("java.vendor.url"));  
        System.out.println(System.getProperty("java.home"));  
        System.out.println(System.getProperty("java.vm.specification.version"));  
        System.out.println(System.getProperty("java.vm.specification.vendor"));  
        System.out.println(System.getProperty("java.vm.specification.name"));  
        System.out.println(System.getProperty("java.vm.version"));  
        System.out.println(System.getProperty("java.vm.vendor"));  
        System.out.println(System.getProperty("java.vm.name"));  
        System.out.println(System.getProperty("java.specification.version"));  
        System.out.println(System.getProperty("java.specification.vendor"));  
        System.out.println(System.getProperty("java.specification.name"));  
        System.out.println(System.getProperty("java.class.version"));  
        System.out.println(System.getProperty("java.class.path"));  
        System.out.println(System.getProperty("java.library.path"));  
        System.out.println(System.getProperty("java.io.tmpdir"));  
        System.out.println(System.getProperty("java.compiler"));  
        System.out.println(System.getProperty("java.ext.dirs"));
       


}

}