diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java
index 51547da..39c4dac 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/Tracer.java
@@ -39,7 +39,7 @@
 	public static final String TRACER = "org.ntlab.traceCollector.tracer.";
 	public static final String TRACER_CLASS_PATH = "org/ntlab/traceCollector/tracer/Tracer.class";
 	public static final String JAVASSIST_LIBRARY = "javassist.jar";
-	private static final String STANDARD_CLASSES = "java.util.ListIterator|java.util.Iterator|java.util.List|java.util.Vector|java.util.ArrayList|java.util.Stack|java.util.Map|java.util.HashMap|java.util.Set|java.util.HashSet|java.util.Hashtable|java.util.LinkedList|java.lang.Thread|java.awt.Component|java.awt.Container|javax.swing.AbstractButton|javax.swing.ActionMap";
+	private static final String STANDARD_CLASSES = "java.util.Collection|java.util.ListIterator|java.util.Iterator|java.util.List|java.util.Vector|java.util.ArrayList|java.util.Stack|java.util.Map|java.util.HashMap|java.util.Map\\$Entry|java.util.Set|java.util.HashSet|java.util.Hashtable|java.util.LinkedList|java.util.Entry|java.util.Collections|java.util.Arrays|java.lang.Thread|java.awt.Component|java.awt.Container|javax.swing.AbstractButton|javax.swing.ActionMap|javax.swing.JTabbedPane";
 	private static final String CONCRETE_STANDARD_CLASSES = "java.util.Vector|java.util.ArrayList|java.util.Stack|java.util.HashMap|java.util.HashSet|java.util.Hashtable|java.util.LinkedList|java.lang.Thread|java.awt.Container|java.awt.Panel|java.awt.ScrollPane|java.awt.Window|java.awt.Dialog|java.awt.Frame|javax.swing.JFrame|javax.swing.JPanel|javax.swing.JScrollPane|javax.swing.JTabbedPane|javax.swing.JToolBar|javax.swing.JMenuBar|javax.swing.JButton|javax.swing.JMenuItem|javax.swing.JMenu|javax.swing.JToggleButton|javax.swing.ActionMap";
 //	private static final String STANDARD_CLASSES = "java.util.ListIterator|java.util.Iterator|java.util.List|java.util.Vector|java.util.ArrayList|java.util.Stack|java.util.Map|java.util.HashMap|java.util.Set|java.util.HashSet|java.util.Hashtable|java.util.LinkedList|java.lang.Thread";
 //	private static final String CONCRETE_STANDARD_CLASSES = "java.util.Vector|java.util.ArrayList|java.util.Stack|java.util.HashMap|java.util.HashSet|java.util.Hashtable|java.util.LinkedList|java.lang.Thread";