Java determines whether the network is healthy by pinging

1 ImportJava.io.BufferedReader; 2 Importjava.io.IOException; 3 ImportJava.io.InputStream; 4 ImportJava.io.InputStreamReader; 5      6 /**  7 * Determine the network connection status. 8  *  9  */   Ten  Public classNetstate { One       A      Public BooleanIsconnect () { -         BooleanConnect =false;  -Runtime runtime =Runtime.getruntime ();  the process process;  -         Try {     -Process = Runtime.exec ("ping" + "www.baidu.com");  -InputStream is =Process.getinputstream ();  +InputStreamReader ISR =NewInputStreamReader (IS);  -BufferedReader br =NewBufferedReader (ISR);  +String line =NULL;  AStringBuffer SB =NewStringBuffer ();  at              while(line = Br.readline ())! =NULL) {      - Sb.append (line);  -             }      -System.out.println ("Return value is:" +SB);  - Is.close ();  - Isr.close ();  in Br.close ();  -       to             if(NULL! = SB &&!sb.tostring (). Equals ("")) {      +String logstring = "";  -                 if(Sb.tostring (). IndexOf ("TTL") > 0) {      the                     //Network unblocked *Connect =true;  $}Else {     Panax Notoginseng                     //Network is not unblocked -Connect =false;  the                 }      +             }      A}Catch(IOException e) { the E.printstacktrace ();  +         }      -         returnConnect;  $     }     $           -      Public Static voidMain (string[] args) { -Netstate netstate =Newnetstate ();  the System.out.println (Netstate.isconnect ());  -      Wuyi     }     the}

Java determines whether the network is healthy by pinging