--- java/javax/servlet/jsp/el/ImplicitObjectELResolver.java	(revision 1403052)
+++ java/javax/servlet/jsp/el/ImplicitObjectELResolver.java	(working copy)
@@ -20,8 +20,8 @@ 
 import java.beans.FeatureDescriptor;
 import java.util.AbstractMap;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Enumeration;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
@@ -73,6 +73,14 @@ 
 
     private static final int SESSION_SCOPE = 10;
 
+    private static final Map<String, Integer> scopeMap = new HashMap<>();
+
+    static {
+        for (int i = 0; i < SCOPE_NAMES.length; i++) {
+            scopeMap.put(SCOPE_NAMES[i], Integer.valueOf(i));
+        }
+    }
+
     public ImplicitObjectELResolver() {
         super();
     }
@@ -85,13 +93,13 @@ 
         }
 
         if (base == null && property != null) {
-            int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());
+            Integer idx = scopeMap.get(property.toString());
 
-            if (idx >= 0) {
+            if (idx != null) {
                 PageContext page = (PageContext) context
                         .getContext(JspContext.class);
                 context.setPropertyResolved(true);
-                switch (idx) {
+                switch (idx.intValue()) {
                 case APPLICATIONSCOPE:
                     return ScopeManager.get(page).getApplicationScope();
                 case COOKIE:
@@ -129,8 +137,8 @@ 
         }
 
         if (base == null && property != null) {
-            int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());
-            if (idx >= 0) {
+            Integer idx = scopeMap.get(property.toString());
+            if (idx != null) {
                 context.setPropertyResolved(true);
             }
         }
@@ -147,8 +155,8 @@ 
         }
 
         if (base == null && property != null) {
-            int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());
-            if (idx >= 0) {
+            Integer idx = scopeMap.get(property.toString());
+            if (idx != null) {
                 context.setPropertyResolved(true);
                 throw new PropertyNotWritableException();
             }
@@ -163,8 +171,8 @@ 
         }
 
         if (base == null && property != null) {
-            int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());
-            if (idx >= 0) {
+            Integer idx = scopeMap.get(property.toString());
+            if (idx != null) {
                 context.setPropertyResolved(true);
                 return true;
             }