Bug 575453 - JavaPerspective: Marker without File shows PackageExplorer

Change-Id: I89fce18e55c35916d7c68a05cf14771c71c25acc
Signed-off-by: Joerg Kubitz <jkubitz-eclipse@gmx.de>
Reviewed-on: https://git.eclipse.org/r/c/jdt/eclipse.jdt.ui/+/186289
Tested-by: JDT Bot <jdt-bot@eclipse.org>
Reviewed-by: Noopur Gupta <noopur_gupta@in.ibm.com>
diff --git a/org.eclipse.jdt.ui/plugin.xml b/org.eclipse.jdt.ui/plugin.xml
index 19b295a..ef94ba8 100644
--- a/org.eclipse.jdt.ui/plugin.xml
+++ b/org.eclipse.jdt.ui/plugin.xml
@@ -569,6 +569,7 @@
             name="%perspectiveName"
             icon="$nl$/icons/full/eview16/jperspective.png"
             class="org.eclipse.jdt.internal.ui.JavaPerspectiveFactory"
+            defaultShowIn="org.eclipse.jdt.ui.PackageExplorer"
             id="org.eclipse.jdt.ui.JavaPerspective">
          <description>
             %java.perspective.description