package java.io;
public class FilterInputStream extends InputStream {
  protected volatile InputStream in;
  protected FilterInputStream(InputStream in) {
    this.in = in;
  }
  public int read() throws IOException {
    return in.read();
  }
  public int read(byte b[]) throws IOException {
    return read(b, 0, b.length);
  }
  public int read(byte b[], int off, int len) throws IOException {
    return in.read(b, off, len);
  }
  public long skip(long n) throws IOException {
    return in.skip(n);
  }
  public int available() throws IOException {
    return in.available();
  }
  public void close() throws IOException {
    in.close();
  }
  public synchronized void mark(int readlimit) {
    in.mark(readlimit);
  }
  public synchronized void reset() throws IOException {
    in.reset();
  }
  public boolean markSupported() {
    return in.markSupported();
  }
}