ping.java

用JAVA实现PING命令~~~~~~~~~~~~~~~~

import java.io.*; 
import java.lang.*; 
public class Ping{ 
   
public Ping() { 
    } 
    public static void main(String args[]) 
    { 
    String[] addrs= {"www.sina.com"}; 
        if (addrs.length < 1) 
        { 
            System.out.println("syntax Error!"); 
        } 
        else 
        { 
            for(int i=0;i<addrs.length;i++){ 
            String line = null; 
            try 
            { 
                Process pro = Runtime.getRuntime().exec("ping " + addrs[i]); 
                BufferedReader buf = new BufferedReader(new InputStreamReader(pro.getInputStream())); 
                while((line = buf.readLine()) != null) 
                    System.out.println(line); 
            } 
            catch(Exception ex) 
            { 
                System.out.println(ex.getMessage()); 
            } 
          } 
        } 
      } 
}