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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_04) on Wed May 12 12:20:46 EDT 2004 --><TITLE>DataFile (DataFile 1.3.3)</TITLE><META NAME="keywords" CONTENT="com.infomata.data.DataFile class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="DataFile (DataFile 1.3.3)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/DataFile.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> <b><a href="http://www.infomata.com" target="_top" title="Data File Read/Write Utility">DataFile 1.3.3</a></b> </EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../com/infomata/data/CSVFormat.html" title="class in com.infomata.data"><B>PREV CLASS</B></A> <A HREF="../../../com/infomata/data/DataFormat.html" title="interface in com.infomata.data"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="DataFile.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">com.infomata.data</FONT><BR>Class DataFile</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>com.infomata.data.DataFile</B></PRE><HR><DL><DT>public class <B>DataFile</B><DT>extends java.lang.Object</DL><P><p> Main class for generating or reading data files written in widely accepted data format. Currently supported data formats are tab separate (<A HREF="../../../com/infomata/data/TabFormat.html" title="class in com.infomata.data"><CODE>TabFormat</CODE></A>) and CSV (<A HREF="../../../com/infomata/data/CSVFormat.html" title="class in com.infomata.data"><CODE>CSVFormat</CODE></A>), but more data formats can easily be added by implementing <A HREF="../../../com/infomata/data/DataFormat.html" title="interface in com.infomata.data"><CODE>DataFormat</CODE></A> </p> <p> <b>USAGE:</b> <pre class="example"> // Creating a reader for CSV file using ISO-8859-1 DataFile read = DataFile.createReader("8859_1"); read.setDataFormat(new CSVFormat()); try { read.open(new File("/data/test.csv")); for (DataRow row = read.next(); row != null; row = read.next()) { String text = row.getString(0); int number1 = row.getInt(1, 0); double number2 = row.getDouble(2); // use the retrieved data ... } } finally { read.close(); } // Creating a writer for data file with European encoding // ISO-8859-2 (European) using tab separated format. // (rewrite existing file) DataFile write = DataFile.createWriter("8859_2", false); write.setDataFormat(new TabFormat()); try { write.open(new File("/data/test.txt")); for (DataRow row = write.next(); row != null; row = write.next()) { row.add("some German text"); row.add(123); row.add(13323.23d); } } finally { write.close(); } </pre><P><P><DL><DT><B>Version:</B></DT> <DD>$Revision: 1.2 $</DD><DT><B>Author:</B></DT> <DD><a href="mailto:skim@infomata.com">Sam Kim</a></DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#close()">close</A></B>()</CODE><BR> Closes a data file.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#containsHeader()">containsHeader</A></B>()</CODE><BR> Checks if header indicator has been turned on using <A HREF="../../../com/infomata/data/DataFile.html#containsHeader(boolean)"><CODE>containsHeader(boolean)</CODE></A>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#containsHeader(boolean)">containsHeader</A></B>(boolean header)</CODE><BR> Sets the indicator for header row (must be first line of data file).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../com/infomata/data/DataFile.html" title="class in com.infomata.data">DataFile</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#createReader(java.lang.String)">createReader</A></B>(java.lang.String enc)</CODE><BR> Creates a reader instance of a data file.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../com/infomata/data/DataFile.html" title="class in com.infomata.data">DataFile</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#createWriter(java.lang.String, boolean)">createWriter</A></B>(java.lang.String enc, boolean append)</CODE><BR> Creates a writer instance of DataFile used for writing a data file.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#finalize()">finalize</A></B>()</CODE><BR> Finalization method that closes the file descriptor.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Iterator</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#getHeaderNames()">getHeaderNames</A></B>()</CODE><BR> Retrieves the list of header names found in the first row of the data file.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../com/infomata/data/DataRow.html" title="class in com.infomata.data">DataRow</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#next()">next</A></B>()</CODE><BR> Retrieves the next row for reading or writing data</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/infomata/data/DataFile.html#open(java.io.File)">open</A></B>(java.io.File file)</CODE><BR> Opens a data file for reading or writing</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD>⌨️ 快捷键说明
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