http://blog.synchack.com/2012/02/proccpuinfoprocess.html

getRawCpuinfo.java

String getRawCpuinfo() {

    String ret = "";
    FileReader fr = null;
    char[] buf = new char[4096];

    try {
        fr = new FileReader("/proc/cpuinfo");
        int len = fr.read(buf);

        if (len > 0) {
            ret = new String(buf, 0, len);
        }
    } catch (IOException ioe) {
        // ioe.printStackTrace();
    } finally {
        try {
            if (fr != null) {
                fr.close();
            }
        } catch (IOException ioe) {
            // ioe.printStackTrace();
        }
    }
    return ret;
}