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<preface>
<title>Preface</title>
<para>
This user's guide does three things. It
<itemizedlist spacing="compact">
<listitem>
<para>introduces the AspectJ language</para>
</listitem>
<listitem>
<para>
defines each of AspectJ's constructs and their semantics, and</para>
</listitem>
<listitem>
<para>
provides examples of their use.</para>
</listitem>
</itemizedlist>
Appendices give a quick reference and a more formal definition of
AspectJ.
</para>
<para>The first section, <xref linkend="gettingstarted" />, provides a gentle
overview of writing AspectJ programs. It also shows how one can introduce
AspectJ into an existing development effort in stages, reducing the
associated risk. You should read this section if this is your first
exposure to AspectJ and you want to get a sense of what AspectJ is all
about.</para>
<para>The second section, <xref linkend="aspectjlanguage" />, covers the
features of the language in more detail, using code snippets as examples.
The entire language is covered, and after reading this section, you should
be able to use all the features of the language correctly.</para>
<para>The next section, <xref linkend="examples" />, comprises a set of
complete programs that not only show the features being used, but also try
to illustrate recommended practice. You should read this section after you
are familiar with the elements of AspectJ.</para>
<para>The back matter contains several appendices that cover AspectJ's
semantics, a quick reference to the language, a glossary of terms and the
index.</para>
</preface>
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