Java执行本地Python脚本

a = 100
b = 200
print (a + b)

Process proc = Runtime.getRuntime().exec("python D:\\project\\python\\add.py");

            BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
            String line = null;
            while ((line = in.readLine()) != null) {
                System.out.println(line);
            }
            in.close();
            proc.waitFor();