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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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RandomAccessFile (intarsys runtime library)
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de.intarsys.tools.randomaccess</FONT>
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Class RandomAccessFile</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../de/intarsys/tools/randomaccess/AbstractRandomAccess.html" title="class in de.intarsys.tools.randomaccess">de.intarsys.tools.randomaccess.AbstractRandomAccess</A>
      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>de.intarsys.tools.randomaccess.RandomAccessFile</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html" title="interface in de.intarsys.tools.randomaccess">IRandomAccess</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>RandomAccessFile</B><DT>extends <A HREF="../../../../de/intarsys/tools/randomaccess/AbstractRandomAccess.html" title="class in de.intarsys.tools.randomaccess">AbstractRandomAccess</A></DL>
</PRE>

<P>
Implements random access to a file.
<P>

<P>
<HR>

<P>

<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<B>Constructor Summary</B></FONT></TH>
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<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#RandomAccessFile(java.io.File)">RandomAccessFile</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html" title="class or interface in java.io">File</A>&nbsp;file)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#RandomAccessFile(java.io.File, boolean)">RandomAccessFile</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html" title="class or interface in java.io">File</A>&nbsp;file,
                 boolean&nbsp;create)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#close()">close</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Closes this random access data container and releases any system
 resources associated with the stream.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#flush()">flush</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Force changes to be made persistent.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#getLength()">getLength</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the length of this data container.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#getOffset()">getOffset</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the current offset in this data container.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#isReadOnly()">isReadOnly</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<code>true</code> if this is a read only data container.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#read()">read</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reads a byte of data from this data container.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#read(byte[])">read</A></B>(byte[]&nbsp;buffer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reads up to <code>buffer.length</code> bytes of data from this data
 container into an array of bytes.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#read(byte[], int, int)">read</A></B>(byte[]&nbsp;buffer,
     int&nbsp;start,
     int&nbsp;numBytes)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reads up to <code>len</code> bytes of data from this data container
 into an array of bytes.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#seek(long)">seek</A></B>(long&nbsp;offset)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the offset, measured from the beginning of the data container at
 which the next read or write occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#seekBy(long)">seekBy</A></B>(long&nbsp;delta)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the offset, measured from the current offset at which the next read
 or write occurs.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#setLength(long)">setLength</A></B>(long&nbsp;newLength)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Assign the length.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#write(byte[])">write</A></B>(byte[]&nbsp;buffer)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Writes <code>b.length</code> bytes from the specified byte array,
 starting at the current offset.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#write(byte[], int, int)">write</A></B>(byte[]&nbsp;buffer,
      int&nbsp;start,
      int&nbsp;numBytes)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Writes <code>len</code> bytes from the specified byte array starting at
 <code>start</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../de/intarsys/tools/randomaccess/RandomAccessFile.html#write(int)">write</A></B>(int&nbsp;b)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Writes the specified byte .</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_de.intarsys.tools.randomaccess.AbstractRandomAccess"><!-- --></A>
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class de.intarsys.tools.randomaccess.<A HREF="../../../../de/intarsys/tools/randomaccess/AbstractRandomAccess.html" title="class in de.intarsys.tools.randomaccess">AbstractRandomAccess</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../de/intarsys/tools/randomaccess/AbstractRandomAccess.html#asInputStream()">asInputStream</A>, <A HREF="../../../../de/intarsys/tools/randomaccess/AbstractRandomAccess.html#asOutputStream()">asOutputStream</A>, <A HREF="../../../../de/intarsys/tools/randomaccess/AbstractRandomAccess.html#mark()">mark</A>, <A HREF="../../../../de/intarsys/tools/randomaccess/AbstractRandomAccess.html#reset()">reset</A></CODE></TD>
</TR>
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&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<A NAME="RandomAccessFile(java.io.File)"><!-- --></A><H3>
RandomAccessFile</H3>
<PRE>
public <B>RandomAccessFile</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html" title="class or interface in java.io">File</A>&nbsp;file)
                 throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - to open for random access
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/FileNotFoundException.html" title="class or interface in java.io">FileNotFoundException</A></CODE> - if file was not found or the file is locked by a different
             process
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DL>
<HR>

<A NAME="RandomAccessFile(java.io.File, boolean)"><!-- --></A><H3>
RandomAccessFile</H3>
<PRE>
public <B>RandomAccessFile</B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html" title="class or interface in java.io">File</A>&nbsp;file,
                        boolean&nbsp;create)
                 throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - to open for random access
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/FileNotFoundException.html" title="class or interface in java.io">FileNotFoundException</A></CODE> - if file was not found or the file is locked by a different
             process
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DL>

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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
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<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()
           throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#close()">IRandomAccess</A></CODE></B></DD>
<DD>Closes this random access data container and releases any system
 resources associated with the stream. A closed random access data
 container cannot perform input or output operations and cannot be
 reopened.
<P>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="flush()"><!-- --></A><H3>
flush</H3>
<PRE>
public void <B>flush</B>()
           throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#flush()">IRandomAccess</A></CODE></B></DD>
<DD>Force changes to be made persistent.
<P>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getLength()"><!-- --></A><H3>
getLength</H3>
<PRE>
public long <B>getLength</B>()
               throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#getLength()">IRandomAccess</A></CODE></B></DD>
<DD>Returns the length of this data container.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the length of this data container, measured in bytes.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="getOffset()"><!-- --></A><H3>
getOffset</H3>
<PRE>
public long <B>getOffset</B>()
               throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#getOffset()">IRandomAccess</A></CODE></B></DD>
<DD>Returns the current offset in this data container.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the offset from the beginning of the data container, in bytes, at
         which the next read or write occurs.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="isReadOnly()"><!-- --></A><H3>
isReadOnly</H3>
<PRE>
public boolean <B>isReadOnly</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#isReadOnly()">IRandomAccess</A></CODE></B></DD>
<DD><code>true</code> if this is a read only data container.
<P>
<DD><DL>

<DT><B>Returns:</B><DD><code>true</code> if this is a read only data container.</DL>
</DD>
</DL>
<HR>

<A NAME="read()"><!-- --></A><H3>
read</H3>
<PRE>
public int <B>read</B>()
         throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#read()">IRandomAccess</A></CODE></B></DD>
<DD>Reads a byte of data from this data container. The byte is returned as an
 integer in the range 0 to 255 (<code>0x00-0x0ff</code>). This method
 blocks if no input is yet available.
 <p>
 This method behaves in exactly the same way as the
 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/InputStream.html#read()" title="class or interface in java.io"><CODE>InputStream.read()</CODE></A> method of <code>InputStream</code>.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the next byte of data, or <code>-1</code> if the end of the
         data container has been reached.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs. Not thrown if the end of the data
                container has been reached.</DL>
</DD>
</DL>
<HR>

<A NAME="read(byte[])"><!-- --></A><H3>
read</H3>
<PRE>
public int <B>read</B>(byte[]&nbsp;buffer)
         throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#read(byte[])">IRandomAccess</A></CODE></B></DD>
<DD>Reads up to <code>buffer.length</code> bytes of data from this data
 container into an array of bytes. This method blocks until at least one
 byte of input is available.
 <p>
 This method behaves in the exactly the same way as the
 <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/InputStream.html#read(byte[])" title="class or interface in java.io"><CODE>InputStream.read(byte[])</CODE></A> method of <code>InputStream</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the buffer into which the data is read.
<DT><B>Returns:</B><DD>the total number of bytes read into the buffer, or
         <code>-1</code> if there is no more data because the end of
         this data container has been reached.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="read(byte[], int, int)"><!-- --></A><H3>
read</H3>
<PRE>
public int <B>read</B>(byte[]&nbsp;buffer,
                int&nbsp;start,
                int&nbsp;numBytes)
         throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#read(byte[], int, int)">IRandomAccess</A></CODE></B></DD>
<DD>Reads up to <code>len</code> bytes of data from this data container
 into an array of bytes. This method blocks until at least one byte of
 input is available.
 <p>
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the total number of bytes read into the buffer, or
         <code>-1</code> if there is no more data because the end of the
         file has been reached.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="seek(long)"><!-- --></A><H3>
seek</H3>
<PRE>
public void <B>seek</B>(long&nbsp;offset)
          throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#seek(long)">IRandomAccess</A></CODE></B></DD>
<DD>Sets the offset, measured from the beginning of the data container at
 which the next read or write occurs. The offset may be set beyond the end
 of the data container. Setting the offset beyond the end of the data
 container does not change the data container length. The length will
 change only by writing after the offset has been set beyond the end of
 the data container.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>offset</CODE> - the offset position, measured in bytes from the beginning of
            the data container
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if <code>offset</code> is less than <code>0</code> or
                if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="seekBy(long)"><!-- --></A><H3>
seekBy</H3>
<PRE>
public void <B>seekBy</B>(long&nbsp;delta)
            throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#seekBy(long)">IRandomAccess</A></CODE></B></DD>
<DD>Sets the offset, measured from the current offset at which the next read
 or write occurs. The offset may be set beyond the end of the data
 container. Setting the offset beyond the end of the data container does
 not change the data container length. The length will change only by
 writing after the offset has been set beyond the end of the data
 container.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>delta</CODE> - the amount of bytes by which to change the current offset
            position
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if the resulting <code>offset</code> is less than
                <code>0</code> or if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="setLength(long)"><!-- --></A><H3>
setLength</H3>
<PRE>
public void <B>setLength</B>(long&nbsp;newLength)
               throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#setLength(long)">IRandomAccess</A></CODE></B></DD>
<DD>Assign the length. All bytes after length are truncated. If the real
 length is currently less than newLength, the data structure will be
 enlarged.
<P>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="write(byte[])"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(byte[]&nbsp;buffer)
           throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#write(byte[])">IRandomAccess</A></CODE></B></DD>
<DD>Writes <code>b.length</code> bytes from the specified byte array,
 starting at the current offset.
<P>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="write(byte[], int, int)"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(byte[]&nbsp;buffer,
                  int&nbsp;start,
                  int&nbsp;numBytes)
           throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#write(byte[], int, int)">IRandomAccess</A></CODE></B></DD>
<DD>Writes <code>len</code> bytes from the specified byte array starting at
 <code>start</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>buffer</CODE> - the data.<DD><CODE>start</CODE> - the start offset in the data.<DD><CODE>numBytes</CODE> - the number of bytes to write.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
<HR>

<A NAME="write(int)"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(int&nbsp;b)
           throws <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../de/intarsys/tools/randomaccess/IRandomAccess.html#write(int)">IRandomAccess</A></CODE></B></DD>
<DD>Writes the specified byte . The write starts at the current offset.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>b</CODE> - the <code>byte</code> to be written.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE> - if an I/O error occurs.</DL>
</DD>
</DL>
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