datagram.html

是MIDP 的API 查詢文件, 大家可以看一下裡面的index.html, 再用Package 或 Class 名字來查.

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<TD><B>Methods inherited from interface java.io.<A HREF="../../../java/io/DataInput.html">DataInput</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../java/io/DataInput.html#readBoolean()">readBoolean</A>, <A HREF="../../../java/io/DataInput.html#readByte()">readByte</A>, <A HREF="../../../java/io/DataInput.html#readChar()">readChar</A>, <A HREF="../../../java/io/DataInput.html#readFully(byte[])">readFully</A>, <A HREF="../../../java/io/DataInput.html#readFully(byte[], int, int)">readFully</A>, <A HREF="../../../java/io/DataInput.html#readInt()">readInt</A>, <A HREF="../../../java/io/DataInput.html#readLong()">readLong</A>, <A HREF="../../../java/io/DataInput.html#readShort()">readShort</A>, <A HREF="../../../java/io/DataInput.html#readUnsignedByte()">readUnsignedByte</A>, <A HREF="../../../java/io/DataInput.html#readUnsignedShort()">readUnsignedShort</A>, <A HREF="../../../java/io/DataInput.html#readUTF()">readUTF</A>, <A HREF="../../../java/io/DataInput.html#skipBytes(int)">skipBytes</A></CODE></TD>
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&nbsp;<A NAME="methods_inherited_from_class_java.io.DataOutput"><!-- --></A>
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface java.io.<A HREF="../../../java/io/DataOutput.html">DataOutput</A></B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../java/io/DataOutput.html#write(byte[])">write</A>, <A HREF="../../../java/io/DataOutput.html#write(byte[], int, int)">write</A>, <A HREF="../../../java/io/DataOutput.html#write(int)">write</A>, <A HREF="../../../java/io/DataOutput.html#writeBoolean(boolean)">writeBoolean</A>, <A HREF="../../../java/io/DataOutput.html#writeByte(int)">writeByte</A>, <A HREF="../../../java/io/DataOutput.html#writeChar(int)">writeChar</A>, <A HREF="../../../java/io/DataOutput.html#writeChars(java.lang.String)">writeChars</A>, <A HREF="../../../java/io/DataOutput.html#writeInt(int)">writeInt</A>, <A HREF="../../../java/io/DataOutput.html#writeLong(long)">writeLong</A>, <A HREF="../../../java/io/DataOutput.html#writeShort(int)">writeShort</A>, <A HREF="../../../java/io/DataOutput.html#writeUTF(java.lang.String)">writeUTF</A></CODE></TD>
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<B>Method Detail</B></FONT></TD>
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<A NAME="getAddress()"><!-- --></A><H3>
getAddress</H3>
<PRE>
public <A HREF="../../../java/lang/String.html">String</A> <B>getAddress</B>()</PRE>
<DL>
<DD>Get the address in the datagram.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the address in string form, or null if no address was set<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/io/Datagram.html#setAddress(java.lang.String)"><CODE>setAddress(java.lang.String)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getData()"><!-- --></A><H3>
getData</H3>
<PRE>
public byte[] <B>getData</B>()</PRE>
<DL>
<DD>Get the buffer.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the data buffer<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/io/Datagram.html#setData(byte[], int, int)"><CODE>setData(byte[], int, int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getLength()"><!-- --></A><H3>
getLength</H3>
<PRE>
public int <B>getLength</B>()</PRE>
<DL>
<DD>Get the length.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the length of the data<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/io/Datagram.html#setLength(int)"><CODE>setLength(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getOffset()"><!-- --></A><H3>
getOffset</H3>
<PRE>
public int <B>getOffset</B>()</PRE>
<DL>
<DD>Get the offset.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the offset into the data buffer</DL>
</DD>
</DL>
<HR>

<A NAME="setAddress(java.lang.String)"><!-- --></A><H3>
setAddress</H3>
<PRE>
public void <B>setAddress</B>(<A HREF="../../../java/lang/String.html">String</A>&nbsp;addr)
                throws <A HREF="../../../java/io/IOException.html">IOException</A></PRE>
<DL>
<DD>Set datagram address.
 <p>
 The actual addressing scheme is implementation-dependent.
 Please read the general comments on datagram addressing
 in <I>DatagramConnection.java</I>.
 <p>
 Note that if the address of a datagram is not specified, then it
 defaults to that of the connection.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>addr</CODE> - the new target address as a URL<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the address is not valid<DD><CODE><A HREF="../../../java/io/IOException.html">IOException</A></CODE> - if a some kind of I/O error occurs<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/io/Datagram.html#getAddress()"><CODE>getAddress()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setAddress(javax.microedition.io.Datagram)"><!-- --></A><H3>
setAddress</H3>
<PRE>
public void <B>setAddress</B>(<A HREF="../../../javax/microedition/io/Datagram.html">Datagram</A>&nbsp;reference)</PRE>
<DL>
<DD>Set datagram address, copying the address from another datagram.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>reference</CODE> - the datagram who's address will be copied as
 the new target address for this datagram.<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the address is not valid<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/io/Datagram.html#getAddress()"><CODE>getAddress()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setLength(int)"><!-- --></A><H3>
setLength</H3>
<PRE>
public void <B>setLength</B>(int&nbsp;len)</PRE>
<DL>
<DD>Set the length.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>len</CODE> - the new length of the data<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the length is negative
 or larger than the buffer<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/io/Datagram.html#getLength()"><CODE>getLength()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setData(byte[], int, int)"><!-- --></A><H3>
setData</H3>
<PRE>
public void <B>setData</B>(byte[]&nbsp;buffer,
                    int&nbsp;offset,
                    int&nbsp;len)</PRE>
<DL>
<DD>Set the buffer, offset and length.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the data buffer<DD><CODE>offset</CODE> - the offset into the data buffer<DD><CODE>len</CODE> - the length of the data in the buffer<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the length or offset
                                     fall outside the buffer<DT><B>See Also: </B><DD><A HREF="../../../javax/microedition/io/Datagram.html#getData()"><CODE>getData()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="reset()"><!-- --></A><H3>
reset</H3>
<PRE>
public void <B>reset</B>()</PRE>
<DL>
<DD>Zero the read/write pointer as well as the offset and
 length parameters.<DD><DL>
</DL>
</DD>
</DL>
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