bufferedreader br = new bufferedreader(new filereader(old)) in python code example

Example: java bufferedreader

private static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
private static StringTokenizer st;
static String next() throws IOException {
    while (st==null||!st.hasMoreTokens()) {
        st = new StringTokenizer(br.readLine().trim());
    }
    return st.nextToken();
}
static long readLong() throws IOException {
    return Long.parseLong(next());
}
static int readInt() throws IOException {
    return Integer.parseInt(next());
}
static double readDouble() throws IOException {
    return Double.parseDouble(next());
}
static String readLine() throws IOException {
    return br.readLine().trim();
}