sequenceinputstream.html

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<A NAME="SequenceInputStream(java.util.Enumeration)"><!-- --></A><H3>
SequenceInputStream</H3>
<PRE>
public <B>SequenceInputStream</B>(<A HREF="../../java/util/Enumeration.html">Enumeration</A>&nbsp;e)</PRE>
<DL>
<DD>Initializes a newly created <code>SequenceInputStream</code>
 by remembering the argument, which must
 be an <code>Enumeration</code>  that produces
 objects whose run-time type is <code>InputStream</code>.
 The input streams that are  produced by
 the enumeration will be read, in order,
 to provide the bytes to be read  from this
 <code>SequenceInputStream</code>. After
 each input stream from the enumeration
 is exhausted, it is closed by calling its
 <code>close</code> method.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>e</CODE> - an enumeration of input streams.<DT><B>See Also: </B><DD><A HREF="../../java/util/Enumeration.html"><CODE>Enumeration</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="SequenceInputStream(java.io.InputStream, java.io.InputStream)"><!-- --></A><H3>
SequenceInputStream</H3>
<PRE>
public <B>SequenceInputStream</B>(<A HREF="../../java/io/InputStream.html">InputStream</A>&nbsp;s1,
                           <A HREF="../../java/io/InputStream.html">InputStream</A>&nbsp;s2)</PRE>
<DL>
<DD>Initializes a newly
 created <code>SequenceInputStream</code>
 by remembering the two arguments, which
 will be read in order, first <code>s1</code>
 and then <code>s2</code>, to provide the
 bytes to be read from this <code>SequenceInputStream</code>.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>s1</CODE> - the first input stream to read.<DD><CODE>s2</CODE> - the second input stream to read.</DL>
</DD>
</DL>

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<A NAME="available()"><!-- --></A><H3>
available</H3>
<PRE>
public int <B>available</B>()
              throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Returns the number of bytes available on the current stream.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/io/InputStream.html#available()">available</A></CODE> in class <CODE><A HREF="../../java/io/InputStream.html">InputStream</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Since: </B><DD>JDK1.1</DD>
</DL>
</DD>
</DL>
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<A NAME="read()"><!-- --></A><H3>
read</H3>
<PRE>
public int <B>read</B>()
         throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Reads the next byte of data from this input stream. The byte is
 returned as an <code>int</code> in the range <code>0</code> to
 <code>255</code>. If no byte is available because the end of the
 stream has been reached, the value <code>-1</code> is returned.
 This method blocks until input data is available, the end of the
 stream is detected, or an exception is thrown.
 <p>
 This method
 tries to read one character from the current substream. If it
 reaches the end of the stream, it calls the <code>close</code>
 method of the current substream and begins reading from the next
 substream.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/io/InputStream.html#read()">read</A></CODE> in class <CODE><A HREF="../../java/io/InputStream.html">InputStream</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the next byte of data, or <code>-1</code> if the end of the
             stream is reached.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
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<A NAME="read(byte[], int, int)"><!-- --></A><H3>
read</H3>
<PRE>
public int <B>read</B>(byte[]&nbsp;b,
                int&nbsp;off,
                int&nbsp;len)
         throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Reads up to <code>len</code> bytes of data from this input stream
 into an array of bytes. This method blocks until at least 1 byte
 of input is available. If the first argument is <code>null</code>,
 up to <code>len</code> bytes are read and discarded.
 <p>
 The <code>read</code> method of <code>SequenceInputStream</code>
 tries to read the data from the current substream. If it fails to
 read any characters because the substream has reached the end of
 the stream, it calls the <code>close</code> method of the current
 substream and begins reading from the next substream.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/io/InputStream.html#read(byte[], int, int)">read</A></CODE> in class <CODE><A HREF="../../java/io/InputStream.html">InputStream</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>b</CODE> - the buffer into which the data is read.<DD><CODE>off</CODE> - the start offset of the data.<DD><CODE>len</CODE> - the maximum number of bytes read.<DT><B>Returns:</B><DD>int   the number of bytes read.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
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<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()
           throws <A HREF="../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Closes this input stream and releases any system resources
 associated with the stream.
 A closed <code>SequenceInputStream</code>
 cannot  perform input operations and cannot
 be reopened.
 <p>
 If this stream was created
 from an enumeration, all remaining elements
 are requested from the enumeration and closed
 before the <code>close</code> method returns.
 of <code>InputStream</code> .<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/io/InputStream.html#close()">close</A></CODE> in class <CODE><A HREF="../../java/io/InputStream.html">InputStream</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
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