J2ME traverse handheld all root paths find and RMS store the maximum available space path

  
 

 /** * Get the path * traverse the handset all follow the path, find out the maximum free space path as the return value, * and in RMS, the next startup program directly from the RMS read path * * @return */public String GETPHONEP
  Ath () {String phonepath = "";
   try {recordstore rootpathrms = Recordstore.openrecordstore ("Phonepath", true);
   int num = Rootpathrms.getnumrecords ();
    if (num > 0) {byte[] b = Rootpathrms.getrecord (1);
   Phonepath = new String (b, "Utf-8"); } else if (Phonepath.equals ("") | | |
    Phonepath = = null) {string[] roots = new STRING[10];
    Enumeration E = Filesystemregistry.listroots ();
    int i = 0;
     while (E.hasmoreelements ()) {String root = (string) e.nextelement ();
     Roots[i] = root;
    i++;
    } long[] rootsizes = new Long[i];
     for (int j = 0; J < i; J + +) {Fileconnection FC;
      try {fc = (fileconnection) connector.open ("file:///" + roots[j]);
     ROOTSIZES[J] = Fc.availablesize ();
     } catch (IOException E1) {e1.printstacktrace ();
    }} int index = 0;
 Long temp = 0;   for (int h = 0; h < rootsizes.length; h++) {if (Rootsizes[h] > Temp) {temp = rootsizes[h];
     index = h;
    } else continue;
    } Phonepath = Roots[index];
   Rootpathrms.addrecord (Phonepath.getbytes (), 0, Phonepath.getbytes (). length);
  }} catch (Recordstorefullexception e) {e.printstacktrace ();
  } catch (Recordstorenotfoundexception e) {e.printstacktrace ();
  } catch (Recordstoreexception e) {e.printstacktrace ();
  } catch (Unsupportedencodingexception e) {e.printstacktrace ();
   } finally {try {rootpathrms.closerecordstore ();
   } catch (Recordstorenotopenexception e) {e.printstacktrace ();
   } catch (Recordstoreexception e) {e.printstacktrace ();
 }} return Phonepath; }