java Process

import java.io.BufferedReader;
import java.io.InputStreamReader;
 

public class CommandUtil {
 
	public static String exeCmd(String commandStr){
		String result="";
		 BufferedReader br = null;  
	        try {  
	            Process p = Runtime.getRuntime().exec(commandStr);  
	            br = new BufferedReader(new InputStreamReader(p.getInputStream()));  
	            String line = null;  
	            StringBuilder sb = new StringBuilder();  
	            while ((line = br.readLine()) != null) {  
	                sb.append(line + "\n");  
	            }  
	            
	            result=sb.toString();
	        } catch (Exception e) {  
	            e.printStackTrace();  
	        }   
	        finally  
	        {  
	            if (br != null)  
	            {  
	                try {  
	                    br.close();  
	                } catch (Exception e) {  
	                    e.printStackTrace();  
	                }  
	            }  
	        }  
	        return result;
	}

  
    public static void main(String[] args) {  
 
        String commandStr = "netstat -aon";  

        CommandUtil.exeCmd(commandStr);  
        
    }  
}