bytesmessage.html

j2ee api,很好的api。我这现在有

<A NAME="readChar()"><!-- --></A><H3>
readChar</H3>
<PRE>
public char <B>readChar</B>()
              throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a Unicode character value from the bytes message stream.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the next two bytes from the bytes message stream as a Unicode
 character
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageEOFException.html" title="class in javax.jms">MessageEOFException</A></CODE> - if unexpected end of bytes stream has 
                                been reached.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="readInt()"><!-- --></A><H3>
readInt</H3>
<PRE>
public int <B>readInt</B>()
            throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a signed 32-bit integer from the bytes message stream.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the next four bytes from the bytes message stream, interpreted
 as an <code>int</code>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageEOFException.html" title="class in javax.jms">MessageEOFException</A></CODE> - if unexpected end of bytes stream has 
                                been reached.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="readLong()"><!-- --></A><H3>
readLong</H3>
<PRE>
public long <B>readLong</B>()
              throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a signed 64-bit integer from the bytes message stream.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the next eight bytes from the bytes message stream, interpreted
 as a <code>long</code>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageEOFException.html" title="class in javax.jms">MessageEOFException</A></CODE> - if unexpected end of bytes stream has 
                                been reached.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="readFloat()"><!-- --></A><H3>
readFloat</H3>
<PRE>
public float <B>readFloat</B>()
                throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a <code>float</code> from the bytes message stream.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the next four bytes from the bytes message stream, interpreted
 as a <code>float</code>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageEOFException.html" title="class in javax.jms">MessageEOFException</A></CODE> - if unexpected end of bytes stream has 
                                been reached.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="readDouble()"><!-- --></A><H3>
readDouble</H3>
<PRE>
public double <B>readDouble</B>()
                  throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a <code>double</code> from the bytes message stream.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the next eight bytes from the bytes message stream, interpreted
 as a <code>double</code>
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageEOFException.html" title="class in javax.jms">MessageEOFException</A></CODE> - if unexpected end of bytes stream has 
                                been reached.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="readUTF()"><!-- --></A><H3>
readUTF</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>readUTF</B>()
               throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a string that has been encoded using a modified UTF-8
 format from the bytes message stream.

 <P>For more information on the UTF-8 format, see "File System Safe
 UCS Transformation Format (FSS_UTF)", X/Open Preliminary Specification,
 X/Open Company Ltd., Document Number: P316. This information also
 appears in ISO/IEC 10646, Annex P.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a Unicode string from the bytes message stream
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageEOFException.html" title="class in javax.jms">MessageEOFException</A></CODE> - if unexpected end of bytes stream has 
                                been reached.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="readBytes(byte[])"><!-- --></A><H3>
readBytes</H3>
<PRE>
public int <B>readBytes</B>(byte[]&nbsp;value)
              throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a byte array from the bytes message stream.

 <P>If the length of array <code>value</code> is less than the number of 
 bytes remaining to be read from the stream, the array should 
 be filled. A subsequent call reads the next increment, and so on.
 
 <P>If the number of bytes remaining in the stream is less than the 
 length of 
 array <code>value</code>, the bytes should be read into the array. 
 The return value of the total number of bytes read will be less than
 the length of the array, indicating that there are no more bytes left 
 to be read from the stream. The next read of the stream returns -1.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the buffer into which the data is read
<DT><B>Returns:</B><DD>the total number of bytes read into the buffer, or -1 if 
 there is no more data because the end of the stream has been reached
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="readBytes(byte[], int)"><!-- --></A><H3>
readBytes</H3>
<PRE>
public int <B>readBytes</B>(byte[]&nbsp;value,
                     int&nbsp;length)
              throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Reads a portion of the bytes message stream.

 <P>If the length of array <code>value</code> is less than the number of
 bytes remaining to be read from the stream, the array should 
 be filled. A subsequent call reads the next increment, and so on.
 
 <P>If the number of bytes remaining in the stream is less than the 
 length of 
 array <code>value</code>, the bytes should be read into the array. 
 The return value of the total number of bytes read will be less than
 the length of the array, indicating that there are no more bytes left 
 to be read from the stream. The next read of the stream returns -1.

 <p> If <code>length</code> is negative, or
 <code>length</code> is greater than the length of the array
 <code>value</code>, then an <code>IndexOutOfBoundsException</code> is
 thrown. No bytes will be read from the stream for this exception case.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the buffer into which the data is read<DD><CODE>length</CODE> - the number of bytes to read; must be less than or equal to
        <code>value.length</code>
<DT><B>Returns:</B><DD>the total number of bytes read into the buffer, or -1 if
 there is no more data because the end of the stream has been reached
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to read the message 
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageNotReadableException.html" title="class in javax.jms">MessageNotReadableException</A></CODE> - if the message is in write-only 
                                        mode.</DL>
</DD>
</DL>
<HR>

<A NAME="writeBoolean(boolean)"><!-- --></A><H3>
writeBoolean</H3>
<PRE>
public void <B>writeBoolean</B>(boolean&nbsp;value)
                  throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Writes a <code>boolean</code> to the bytes message stream as a 1-byte 
 value.
 The value <code>true</code> is written as the value 
 <code>(byte)1</code>; the value <code>false</code> is written as 
 the value <code>(byte)0</code>.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the <code>boolean</code> value to be written
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to write the message
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageNotWriteableException.html" title="class in javax.jms">MessageNotWriteableException</A></CODE> - if the message is in read-only 
                                         mode.</DL>
</DD>
</DL>
<HR>

<A NAME="writeByte(byte)"><!-- --></A><H3>
writeByte</H3>
<PRE>
public void <B>writeByte</B>(byte&nbsp;value)
               throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Writes a <code>byte</code> to the bytes message stream as a 1-byte 
 value.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the <code>byte</code> value to be written
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to write the message
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageNotWriteableException.html" title="class in javax.jms">MessageNotWriteableException</A></CODE> - if the message is in read-only 
                                         mode.</DL>
</DD>
</DL>
<HR>

<A NAME="writeShort(short)"><!-- --></A><H3>
writeShort</H3>
<PRE>
public void <B>writeShort</B>(short&nbsp;value)
                throws <A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></PRE>
<DL>
<DD>Writes a <code>short</code> to the bytes message stream as two bytes,
 high byte first.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the <code>short</code> to be written
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</A></CODE> - if the JMS provider fails to write the message
                         due to some internal error.
<DD><CODE><A HREF="../../javax/jms/MessageNotWriteableException.html" title="class in javax.jms">MessageNotWriteableException</A></CODE> - if the message is in read-only 
                                         mode.</DL>
</DD>
</DL>
<HR>