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    <title>
      Products sharing a common source framework
    </title>
    <script language="JavaScript" type="text/javascript" src=
    "PLUGINS_ROOT/org.eclipse.help/livehelp.js">

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  <body>
    <h1>
      Products sharing a common source framework
    </h1>
    <h3>
      Layout on file system
    </h3>
    <ul>

      <li>The Java source files for two products require a common framework.
      </li>
      <li>Projects and common framework are in separate directories which have
      their own source and output folders.
        <p>
          <img src="images/qs-WorkingWithExistingLayout40.png" alt=
          "Layout on file system" />
        </p>
      </li>
    </ul>
    <h3>
      Steps for defining corresponding projects
    </h3>

    <ol>
      <li>
        <p>
          Click <a class="command-link" href=
          'javascript:executeCommand("org.eclipse.ui.perspectives.showPerspective(org.eclipse.ui.perspectives.showPerspective.perspectiveId=org.eclipse.jdt.ui.JavaPerspective)")'>
          <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" alt=
          "Opens the Java perspective" /> <strong>Window &gt; Open Perspective
          &gt; Other... &gt; Java</strong></a> to change to the Java
          perspective.
        </p>

      </li>
      <li>
        <p>
          Click <a class="command-link" href=
          'javascript:executeCommand("org.eclipse.ui.newWizard(newWizardId=org.eclipse.jdt.ui.wizards.JavaProjectWizard)")'>
          <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" alt=
          "Opens the New Java Project wizard" /> <strong>File &gt; New &gt;
          Other... &gt; Java Project</strong></a> to open the <strong>New Java
          Project</strong> wizard.
        </p>

      </li>
      <li>
        <p>
          Type "Product1" in the <strong>Project name</strong> field. Click
          <strong>Next</strong>.
        </p>
        <p>
          <img src="images/qs-WorkingWithExistingLayout41.png" alt=
          "New Java Project wizard" />

        </p>
      </li>
      <li>
        <p>
          On the next page, Select "Product1" source folder.
        </p>
        <p>
          Click <strong>Link additional source</strong> link in
          <strong>Details</strong> pane or button <img src=
          "images/add_linked_source_to_buildpath.png" alt=
          "Link Additional Source to Project" /> in view bar.
        </p>

        <p>
          <img src="images/qs-WorkingWithExistingLayout42.png" alt=
          "Java Project Source setup" />
        </p>
      </li>
      <li>
        <p>
          In <strong>Link Source</strong> click <strong>Browse....</strong> and
          choose the <i><code>D:\Product1\JavaSourceFiles</code></i> directory.
        </p>

        <p>
          Type "src" in the <strong>Folder name</strong> field.
        </p>
        <p>
          <img src="images/qs-WorkingWithExistingLayout43.png" alt=
          "Link Source dialog" />
        </p>
      </li>
      <li>

        <p>
          Click <strong>Finish</strong> to validate and close the dialog.
        </p>
      </li>
      <li>
        <p>
          Again, Select "Product1" and click <strong>Link additional
          source</strong> link in <strong>Details</strong> pane or button
          <img src="images/add_linked_source_to_buildpath.png" alt=
          "Link Additional Source to Project" /> in view bar.
        </p>

        <p>
          <img src="images/qs-WorkingWithExistingLayout44.png" alt=
          "Java Project Source setup" />
        </p>
      </li>
      <li>
        <p>
          In <strong>Link Source</strong> click <strong>Browse....</strong> and
          choose the <i><code>D:\Framework\JavaSourceFiles</code></i>

          directory.
        </p>
        <p>
          Type "src-common" in the <strong>Folder name</strong> field.
        </p>
        <p>
          <img src="images/qs-WorkingWithExistingLayout45.png" alt=
          "Link Source dialog" />
        </p>

      </li>
      <li>
        <p>
          Click <strong>Finish</strong> to validate and close the dialog.
        </p>
        <p>
          Your project source setup now looks as follows:
        </p>

        <p>
          <img src="images/qs-WorkingWithExistingLayout46.png" alt=
          "Java Project Source final setup" />
        </p>
      </li>
      <li>Click <strong>Finish</strong>.
      </li>
      <li>
        <p>

          Create project "Product2" repeating steps 2 to 5 choosing
          <i><code>D:\Product2\JavaSourceFiles</code></i> directory for source
          folder instead.
        </p>
      </li>
      <li>
        <p>
          Click on <strong>Finish</strong> to create the project immediately.
        </p>

      </li>
      <li>
        <p>
          Now, we'll see how to add a linked source folder when project is
          already created in workspace...
        </p>
        <p>
          Edit project "Product2" properties and select <strong>Java Builder
          Path</strong> page.
        </p>

        <p>
          On <strong>Source</strong> tab, click <strong>Link
          Source...</strong>.
        </p>
        <p>
          <img src="images/qs-WorkingWithExistingLayout47.png" alt=
          "Java Build Path Properties Source tab" />
        </p>
      </li>

      <li>
        <p>
          In <strong>Link Source</strong> click <strong>Browse....</strong> and
          choose the <i><code>D:\Framework\JavaSourceFiles</code></i>
          directory.
        </p>

        <p>
          Type "src-common" in the <strong>Folder name</strong> field.
        </p>
        <p>
          <img src="images/qs-WorkingWithExistingLayout48.png" alt=
          "Link Source dialog" />
        </p>
      </li>
      <li>

        <p>
          Click <strong>Finish</strong> to validate and close the dialog.
        </p>
        <p>
          Click <strong>OK</strong> to apply project "Product2" properties
          changes.
        </p>
      </li>

      <li>You now have two Java projects which respectively contain the sources
      of "Product1" and "Product2" and which are using the sources of
      "Framework".
        <p>
          <img src="images/qs-WorkingWithExistingLayout49.png" alt=
          "Created Java projects in Workspace" />
        </p>
      </li>
    </ol><em>Note:</em> Files in "src-common" are shared. So editing
    "Common.java" in "Product1" will modify "Common.java" in "Product2".
    However they are compiled in the context of their respective projects. Two
    "Common.class" files will be generated; one for each project. If the two
    projects have different compiler options, then different errors could be
    reported on each "Common.java" file.
    <p class="nav_footer" id="nav_footer">
      Next Section: <a href="qs-WorkingWithExistingLayout5.htm">Product nesting
      resources in output directory</a>

    </p>
    <p>
      <img border="0" src="../images/ngrelc.png" alt="Related concepts" />
    </p>
    <p>
      <a href="../concepts/concept-java-project.htm">Java projects</a><br />
      <a href="../concepts/concept-java-views.htm">Java views</a><br />
    </p>

    <p>
      <img src="../images/ngrelr.png" alt="Related reference" />
    </p>
    <p>
      <a href="../reference/ref-wizard-java-project.htm">New Java Project
      Wizard</a><br />
      <a href="../reference/views/ref-view-package-explorer.htm">Package
      Explorer View</a><br />
    </p>
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