java执行shell脚本

public static void main(String[] args) throws Exception{
               String[] cmds = new String[] { "/bin/sh", "-c",
                    "/usr/java/tomcat/bin/a.sh" };
            Process process = null;
            try {
                process = Runtime.getRuntime().exec(cmds, null, null);
                InputStreamReader ir = new InputStreamReader(process
                        .getInputStream());
                LineNumberReader input = new LineNumberReader(ir);
                String line;
                process.waitFor();
                while ((line = input.readLine()) != null) {
                    System.out.println(line);
                }
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }finally{
                process.destroy();
            }

        }