public static void get() throws IOException{         String address="10.132.118.110";                       Process process = Runtime.getRuntime().exec("ping "+address);              InputStreamReader r = new InputStreamReader(process.getInputStream());              LineNumberReader returnData = new LineNumberReader(r);                   String returnMsg="";              String line = "";              while ((line = returnData.readLine()) != null) {                  System.out.println(line);                  returnMsg += line;              }                            if(returnMsg.indexOf("100% loss")!=-1){                  System.out.println("与 " +address +" 连接不畅通.");              }              else{                  System.out.println("与 " +address +" 连接畅通.");              }      }