src/java.base/share/classes/java/lang/reflect/Method.java

@@ -35,10 +35,11 @@
 import sun.reflect.annotation.AnnotationType;
 import sun.reflect.annotation.AnnotationParser;
 import java.lang.annotation.Annotation;
 import java.lang.annotation.AnnotationFormatError;
 import java.nio.ByteBuffer;
+import java.util.Arrays;
 
 /**
  * A {@code Method} provides information about, and access to, a single method
  * on a class or interface.  The reflected method may be a class method
  * or an instance method (including an abstract method).

@@ -176,10 +177,31 @@
     byte[] getAnnotationBytes() {
         return annotations;
     }
 
     /**
+     * Used by java.lang.MethodTable to optimize comparing/locating
+     * method signatures.
+     */
+    boolean parameterTypesEquals(Method other) {
+        int len = parameterTypes.length;
+        if (len != other.parameterTypes.length) {
+            return false;
+        }
+        for (int i = 0; i < len; i++) {
+            if (parameterTypes[i] != other.parameterTypes[i]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    int parameterTypesHashCode() {
+        return Arrays.hashCode(parameterTypes);
+    }
+
+    /**
      * {@inheritDoc}
      */
     @Override
     public Class<?> getDeclaringClass() {
         return clazz;