Java在windwos上执行CMD

代码块：

---

public class ExecWindowUtils {

    public static void exeCmd(String commandStr) {  
        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 + " ");  
            }  
            System.out.println(sb.toString());  
        } catch (Exception e) {  
            e.printStackTrace();  
        }   
        finally  
        {  
            if (br != null)  
            {  
                try {  
                    br.close();  
                } catch (Exception e) {  
                    e.printStackTrace();  
                }  
            }  
        }  
    }  
 
    public static void main(String[] args) {  
        String commandStr = "help";  
        //String commandStr = "ipconfig";  
        ExecWindowUtils.exeCmd(commandStr);  
    }  
}