为什么在Java中不写？

Why not write in Java?

try{
    FileWriter fw = new FileWriter(new File("/sys/devices/enable"));
    fw.write('1');
    fw.close();
}catch(IOExceprion e){}

如果你真的想调用一个shell，试试这个：

If you really want to invoke a shell, try this:

Runtime rt = Runtime.getRuntime();
Process p = rt.exec(new String[]{"/system/bin/sh", "-c", "echo \"1\" > /sys/devices/enable");

尝试上述任何一种方法之前，可以先

请确保您的设备是植根第一。

Make sure your device is rooted first before trying any of the above mentioned approaches.