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LayoutPreservingProperties (Apache Ant API)
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org.apache.tools.ant.util</FONT>
<BR>
Class LayoutPreservingProperties</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by ">java.util.Dictionary&lt;K,V&gt;
      <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by ">java.util.Hashtable&lt;java.lang.Object,java.lang.Object&gt;
          <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by ">java.util.Properties
              <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.tools.ant.util.LayoutPreservingProperties</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable, java.lang.Cloneable, java.util.Map&lt;java.lang.Object,java.lang.Object&gt;</DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>LayoutPreservingProperties</B><DT>extends java.util.Properties</DL>
</PRE>

<P>
<p>A Properties collection which preserves comments and whitespace
 present in the input stream from which it was loaded.</p>
 <p>The class defers the usual work of the <a href="http://java.sun.com/j2se/1.3/docs/api/java/util/Properties.html">java.util.Properties</a>
 class to there, but it also keeps track of the contents of the
 input stream from which it was loaded (if applicable), so that it can
 write out the properties in as close a form as possible to the input.</p>
 If no changes occur to property values, the output should be the same
 as the input, except for the leading date stamp, as normal for a
 properties file. Properties added are appended to the file. Properties
 whose values are changed are changed in place. Properties that are
 removed are excised. If the <code>removeComments</code> flag is set,
 then the comments immediately preceding the property are also removed.</p>
 <p>If a second set of properties is loaded into an existing set, the
 lines of the second set are added to the end. Note however, that if a
 property already stored is present in a stream subsequently loaded, then
 that property is removed before the new value is set. For example,
 consider the file</p>
 <pre> # the first line
 alpha=one

# the second line
 beta=two</pre>
 <p>This file is loaded, and then the following is also loaded into the
 same <code>LayoutPreservingProperties</code> object</p>
 <pre> # association
 beta=band

# and finally
 gamma=rays</pre>
 </p>The resulting collection sequence of logical lines depends on whether
 or not <code>removeComments</code> was set at the time the second stream
 is loaded. If it is set, then the resulting list of lines is</p>
 <pre> # the first line
 alpha=one

# association
 beta=band

# and finally
 gamma=rays</pre>
 <p>If the flag is not set, then the comment "the second line" is retained,
 although the key-value pair <code>beta=two</code> is removed.</p>
<P>

<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../serialized-form.html#org.apache.tools.ant.util.LayoutPreservingProperties">Serialized Form</A></DL>
<HR>

<A NAME="field_summary"></A>
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&nbsp;<A NAME="fields_inherited_from_class_java.util.Properties"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Fields inherited from class java.util.Properties</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>defaults</CODE></TD>
</TR>
</TABLE>
&nbsp;

<A NAME="constructor_summary"></A>
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#LayoutPreservingProperties()">LayoutPreservingProperties</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a new, empty, Properties collection, with no defaults.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#LayoutPreservingProperties(java.util.Properties)">LayoutPreservingProperties</A></B>(java.util.Properties&nbsp;defaults)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a new, empty, Properties collection, with the specified defaults.</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="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#clear()">clear</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#clone()">clone</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#isRemoveComments()">isRemoveComments</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns <code>true</code> if comments are removed along with
 properties, or <code>false</code> otherwise.</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="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#listLines(java.io.PrintStream)">listLines</A></B>(java.io.PrintStream&nbsp;out)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Echo the lines of the properties (including blanks and comments) to 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="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#load(java.io.InputStream)">load</A></B>(java.io.InputStream&nbsp;inStream)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#saveAs(java.io.File)">saveAs</A></B>(java.io.File&nbsp;dest)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Save the properties to a file.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.Object</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#setProperty(java.lang.String, java.lang.String)">setProperty</A></B>(java.lang.String&nbsp;key,
            java.lang.String&nbsp;value)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</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="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#setRemoveComments(boolean)">setRemoveComments</A></B>(boolean&nbsp;val)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the behaviour for comments accompanying properties that
 are being removed.</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="../../../../../org/apache/tools/ant/util/LayoutPreservingProperties.html#store(java.io.OutputStream, java.lang.String)">store</A></B>(java.io.OutputStream&nbsp;out,
      java.lang.String&nbsp;header)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.util.Properties"></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.util.Properties</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>getProperty, getProperty, list, list, loadFromXML, propertyNames, save, storeToXML, storeToXML</CODE></TD>
</TR>
</TABLE>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Methods inherited from class java.util.Hashtable</B></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>contains, containsKey, containsValue, elements, entrySet, equals, get, hashCode, isEmpty, keys, keySet, putAll, rehash, size, toString, values</CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
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</TR>
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&nbsp;
<P>

<A NAME="constructor_detail"></A>
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<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="LayoutPreservingProperties()"></A><H3>
LayoutPreservingProperties</H3>
<PRE>
public <B>LayoutPreservingProperties</B>()</PRE>
<DL>
<DD>Create a new, empty, Properties collection, with no defaults.
<P>
</DL>
<HR>

<A NAME="LayoutPreservingProperties(java.util.Properties)"></A><H3>
LayoutPreservingProperties</H3>
<PRE>
public <B>LayoutPreservingProperties</B>(java.util.Properties&nbsp;defaults)</PRE>
<DL>
<DD>Create a new, empty, Properties collection, with the specified defaults.
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>defaults</CODE> - the default property values</DL>
</DL>

<A NAME="method_detail"></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="isRemoveComments()"></A><H3>
isRemoveComments</H3>
<PRE>
public boolean <B>isRemoveComments</B>()</PRE>
<DL>
<DD>Returns <code>true</code> if comments are removed along with
 properties, or <code>false</code> otherwise. If
 <code>true</code>, then when a property is removed, the comment
 preceding it in the original file is removed also.
<P>
<DD><DL>

<DT><B>Returns:</B><DD><code>true</code> if leading comments are removed when
 a property is removed; <code>false</code> otherwise</DL>
</DD>
</DL>
<HR>

<A NAME="setRemoveComments(boolean)"></A><H3>
setRemoveComments</H3>
<PRE>
public void <B>setRemoveComments</B>(boolean&nbsp;val)</PRE>
<DL>
<DD>Sets the behaviour for comments accompanying properties that
 are being removed. If <code>true</code>, then when a property
 is removed, the comment preceding it in the original file is
 removed also.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>val</CODE> - <code>true</code> if leading comments are to be
 removed when a property is removed; <code>false</code>
 otherwise</DL>
</DD>
</DL>
<HR>

<A NAME="load(java.io.InputStream)"></A><H3>
load</H3>
<PRE>
public void <B>load</B>(java.io.InputStream&nbsp;inStream)
          throws java.io.IOException</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>load</CODE> in class <CODE>java.util.Properties</CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="put(java.lang.Object, java.lang.Object)"></A><H3>
put</H3>
<PRE>
public java.lang.Object <B>put</B>(java.lang.Object&nbsp;key,
                            java.lang.Object&nbsp;value)
                     throws java.lang.NullPointerException</PRE>
<DL>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>put</CODE> in interface <CODE>java.util.Map&lt;java.lang.Object,java.lang.Object&gt;</CODE><DT><B>Overrides:</B><DD><CODE>put</CODE> in class <CODE>java.util.Hashtable&lt;java.lang.Object,java.lang.Object&gt;</CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>java.lang.NullPointerException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="setProperty(java.lang.String, java.lang.String)"></A><H3>
setProperty</H3>
<PRE>
public java.lang.Object <B>setProperty</B>(java.lang.String&nbsp;key,
                                    java.lang.String&nbsp;value)
                             throws java.lang.NullPointerException</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>setProperty</CODE> in class <CODE>java.util.Properties</CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>java.lang.NullPointerException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="clear()"></A><H3>
clear</H3>
<PRE>
public void <B>clear</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>clear</CODE> in interface <CODE>java.util.Map&lt;java.lang.Object,java.lang.Object&gt;</CODE><DT><B>Overrides:</B><DD><CODE>clear</CODE> in class <CODE>java.util.Hashtable&lt;java.lang.Object,java.lang.Object&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="remove(java.lang.Object)"></A><H3>
remove</H3>
<PRE>
public java.lang.Object <B>remove</B>(java.lang.Object&nbsp;key)</PRE>
<DL>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>remove</CODE> in interface <CODE>java.util.Map&lt;java.lang.Object,java.lang.Object&gt;</CODE><DT><B>Overrides:</B><DD><CODE>remove</CODE> in class <CODE>java.util.Hashtable&lt;java.lang.Object,java.lang.Object&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"></A><H3>
clone</H3>
<PRE>
public java.lang.Object <B>clone</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>clone</CODE> in class <CODE>java.util.Hashtable&lt;java.lang.Object,java.lang.Object&gt;</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="listLines(java.io.PrintStream)"></A><H3>
listLines</H3>
<PRE>
public void <B>listLines</B>(java.io.PrintStream&nbsp;out)</PRE>
<DL>
<DD>Echo the lines of the properties (including blanks and comments) to the
 stream.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>out</CODE> - the stream to write to</DL>
</DD>
</DL>
<HR>

<A NAME="saveAs(java.io.File)"></A><H3>
saveAs</H3>
<PRE>
public void <B>saveAs</B>(java.io.File&nbsp;dest)
            throws java.io.IOException</PRE>
<DL>
<DD>Save the properties to a file.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dest</CODE> - the file to write to
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="store(java.io.OutputStream, java.lang.String)"></A><H3>
store</H3>
<PRE>
public void <B>store</B>(java.io.OutputStream&nbsp;out,
                  java.lang.String&nbsp;header)
           throws java.io.IOException</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>store</CODE> in class <CODE>java.util.Properties</CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>

<HR>

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