52      * @throws NullPointerException if <code>in</code> is <code>null</code>
  53      */
  54     protected FilterReader(Reader in) {
  55         super(in);
  56         this.in = in;
  57     }
  58 
  59     /**
  60      * Reads a single character.
  61      *
  62      * @exception  IOException  If an I/O error occurs
  63      */
  64     public int read() throws IOException {
  65         return in.read();
  66     }
  67 
  68     /**
  69      * Reads characters into a portion of an array.
  70      *
  71      * @exception  IOException  If an I/O error occurs

  72      */
  73     public int read(char cbuf[], int off, int len) throws IOException {
  74         return in.read(cbuf, off, len);
  75     }
  76 
  77     /**
  78      * Skips characters.
  79      *
  80      * @exception  IOException  If an I/O error occurs
  81      */
  82     public long skip(long n) throws IOException {
  83         return in.skip(n);
  84     }
  85 
  86     /**
  87      * Tells whether this stream is ready to be read.
  88      *
  89      * @exception  IOException  If an I/O error occurs
  90      */
  91     public boolean ready() throws IOException {

  52      * @throws NullPointerException if <code>in</code> is <code>null</code>
  53      */
  54     protected FilterReader(Reader in) {
  55         super(in);
  56         this.in = in;
  57     }
  58 
  59     /**
  60      * Reads a single character.
  61      *
  62      * @exception  IOException  If an I/O error occurs
  63      */
  64     public int read() throws IOException {
  65         return in.read();
  66     }
  67 
  68     /**
  69      * Reads characters into a portion of an array.
  70      *
  71      * @exception  IOException  If an I/O error occurs
  72      * @exception  IndexOutOfBoundsException {@inheritDoc}
  73      */
  74     public int read(char cbuf[], int off, int len) throws IOException {
  75         return in.read(cbuf, off, len);
  76     }
  77 
  78     /**
  79      * Skips characters.
  80      *
  81      * @exception  IOException  If an I/O error occurs
  82      */
  83     public long skip(long n) throws IOException {
  84         return in.skip(n);
  85     }
  86 
  87     /**
  88      * Tells whether this stream is ready to be read.
  89      *
  90      * @exception  IOException  If an I/O error occurs
  91      */
  92     public boolean ready() throws IOException {