diff -r a88ad84027a0 -r 42dfec6871f6 src/share/classes/com/sun/xml/internal/txw2/DatatypeWriter.java
--- a/src/share/classes/com/sun/xml/internal/txw2/DatatypeWriter.java	Mon Apr 20 15:25:02 2009 -0700
+++ b/src/share/classes/com/sun/xml/internal/txw2/DatatypeWriter.java	Mon May 04 21:10:41 2009 -0700
@@ -25,6 +25,9 @@
 
 package com.sun.xml.internal.txw2;
 
+import java.util.AbstractList;
+import java.util.Collections;
+import java.util.List;
 import javax.xml.namespace.QName;
 
 /**
@@ -53,50 +56,60 @@
      */
     void print(DT dt, NamespaceResolver resolver, StringBuilder buf);
 
+    static final List<DatatypeWriter<?>> BUILTIN = Collections.unmodifiableList(new AbstractList() {
 
-    static final DatatypeWriter<?>[] BUILDIN = new DatatypeWriter<?>[] {
-        new DatatypeWriter<String>() {
-            public Class<String> getType() {
-                return String.class;
+        private DatatypeWriter<?>[] BUILTIN_ARRAY = new DatatypeWriter<?>[] {
+            new DatatypeWriter<String>() {
+                public Class<String> getType() {
+                    return String.class;
+                }
+                public void print(String s, NamespaceResolver resolver, StringBuilder buf) {
+                    buf.append(s);
+                }
+            },
+            new DatatypeWriter<Integer>() {
+                public Class<Integer> getType() {
+                    return Integer.class;
+                }
+                public void print(Integer i, NamespaceResolver resolver, StringBuilder buf) {
+                    buf.append(i);
+                }
+            },
+            new DatatypeWriter<Float>() {
+                public Class<Float> getType() {
+                    return Float.class;
+                }
+                public void print(Float f, NamespaceResolver resolver, StringBuilder buf) {
+                    buf.append(f);
+                }
+            },
+            new DatatypeWriter<Double>() {
+                public Class<Double> getType() {
+                    return Double.class;
+                }
+                public void print(Double d, NamespaceResolver resolver, StringBuilder buf) {
+                    buf.append(d);
+                }
+            },
+            new DatatypeWriter<QName>() {
+                public Class<QName> getType() {
+                    return QName.class;
+                }
+                public void print(QName qn, NamespaceResolver resolver, StringBuilder buf) {
+                    String p = resolver.getPrefix(qn.getNamespaceURI());
+                    if(p.length()!=0)
+                        buf.append(p).append(':');
+                    buf.append(qn.getLocalPart());
+                }
             }
-            public void print(String s, NamespaceResolver resolver, StringBuilder buf) {
-                buf.append(s);
-            }
-        },
-        new DatatypeWriter<Integer>() {
-            public Class<Integer> getType() {
-                return Integer.class;
-            }
-            public void print(Integer i, NamespaceResolver resolver, StringBuilder buf) {
-                buf.append(i);
-            }
-        },
-        new DatatypeWriter<Float>() {
-            public Class<Float> getType() {
-                return Float.class;
-            }
-            public void print(Float f, NamespaceResolver resolver, StringBuilder buf) {
-                buf.append(f);
-            }
-        },
-        new DatatypeWriter<Double>() {
-            public Class<Double> getType() {
-                return Double.class;
-            }
-            public void print(Double d, NamespaceResolver resolver, StringBuilder buf) {
-                buf.append(d);
-            }
-        },
-        new DatatypeWriter<QName>() {
-            public Class<QName> getType() {
-                return QName.class;
-            }
-            public void print(QName qn, NamespaceResolver resolver, StringBuilder buf) {
-                String p = resolver.getPrefix(qn.getNamespaceURI());
-                if(p.length()!=0)
-                    buf.append(p).append(':');
-                buf.append(qn.getLocalPart());
-            }
+        };
+
+        public DatatypeWriter<?> get(int n) {
+          return BUILTIN_ARRAY[n];
         }
-    };
+
+        public int size() {
+          return BUILTIN_ARRAY.length;
+        }
+      });
 }