//心跳中可以放

//自己瞎搞的，有人帮改进吗？

package netTest;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.util.ArrayList;

public class net_test_one {

public static void main(String[] args) {

try {

String[] cmd = new String[]{"cmd.exe","/c","ping www.baidu.com"};  //Window

//

Process process = Runtime.getRuntime().exec( cmd);

BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));

ArrayList list=new ArrayList();

String info="";

int i=-1;

while((info=br.readLine())!=null) {

if(!"".equals(info)) {

list.add(info);

//System.out.println(info);

}

}

br.close();

if(str.indexOf("TTL")>0) {

String newStr=str.toString();

System.out.println(newStr.substring(newStr.lastIndexOf("=")+1,newStr.length()));

}

} catch (Exception e) {

// TODO: handle exception

}

}

}

}

原文：http://www.cnblogs.com/jia-pf/p/7674665.html