Fixed Java 9+ reflection issue

src/zutil/ClassUtil.java

@@ -1,7 +1,7 @@
 /*
  * The MIT License (MIT)
  *
- * Copyright (c) 2020 Ziver Koc
+ * Copyright (c) 2020-2025 Ziver Koc
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -24,9 +24,7 @@
 
 package zutil;
 
-import java.lang.reflect.Field;
+import java.lang.reflect.*;
-import java.lang.reflect.ParameterizedType;
-import java.lang.reflect.Type;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashSet;
@@ -248,4 +246,46 @@ public class ClassUtil {
 
         return fields;
     }
+
+
+    /**
+     * Finds a method definition that is public and accessible for a given method.
+     * This is required for Java 9+ compatibility when reflecting on internal classes.
+     *
+     * @param method the method to search for.
+     * @return a public Method that can be called by reflection without throwing an exception, or the original method will be returned.
+     */
+    public static Method getAccessibleMethod(Method method) {
+        if (Modifier.isPublic(method.getDeclaringClass().getModifiers())) {
+            // The method is already accessible so return it directly
+            return method;
+        }
+
+        String methodName = method.getName();
+        Class<?>[] paramTypes = method.getParameterTypes();
+
+        // Check implemented interfaces for the method (e.g., finding Map.Entry.getKey())
+        for (Class<?> interfaceClass : method.getDeclaringClass().getInterfaces()) {
+            try {
+                Method interfaceMethod = interfaceClass.getMethod(methodName, paramTypes);
+                if (Modifier.isPublic(interfaceMethod.getDeclaringClass().getModifiers())) {
+                    return interfaceMethod;
+                }
+            } catch (NoSuchMethodException e) {
+                // Interface does not have this method, continue loop
+            }
+        }
+
+        // Check if superclass has the method
+        Class<?> superClass = method.getDeclaringClass().getSuperclass();
+        if (superClass != null) {
+            try {
+                Method superMethod = superClass.getMethod(methodName, paramTypes);
+                return getAccessibleMethod(superMethod);
+            } catch (NoSuchMethodException e) {}
+        }
+
+        // No public version was found, return original
+        return method;
+    }
 }

src/zutil/parser/Templator.java

@@ -1,7 +1,7 @@
 /*
  * The MIT License (MIT)
  *
- * Copyright (c) 2020 Ziver Koc
+ * Copyright (c) 2020-2025 Ziver Koc
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -152,7 +152,7 @@ public class Templator {
     }
 
     /**
-     * Will parse or re-parse the source template.
+     * Will parse or reparse the source template.
      */
     private void parseTemplate(String tmpl) {
         tmplRoot = parseTemplate(new TemplateNode(), tmpl, new MutableInt(), null);
@@ -396,11 +396,11 @@ public class Templator {
                 if (attrib.endsWith("()")) { // Is this a function call?
                     if (attrib.length() > 2) {
                         String funcName = attrib.substring(0, attrib.length()-2);
-                        // Using a loop as the direct lookup throws a exception if no field was found
+                        // Using a loop as the direct lookup throws an exception if no field was found
                         // So this is probably a bit faster
                         for (Method m : obj.getClass().getMethods()) {
                             if (m.getParameterTypes().length == 0 && m.getName().equals(funcName)) {
-                                m.setAccessible(true);
+                                m = ClassUtil.getAccessibleMethod(m);
                                 return m.invoke(obj);
                             }
                         }
@@ -411,11 +411,10 @@ public class Templator {
                 else if (obj instanceof Collection && "length".equals(attrib))
                     return ((Collection) obj).size();
                 else {
-                    // Using a loop as the direct lookup throws a exception if no field was found
+                    // Using a loop as the direct lookup throws an exception if no field was found
                     // So this is probably a bit faster
                     for (Field field : ClassUtil.getAllDeclaredFields(obj.getClass())) { // Only look for public fields
                         if (field.getName().equals(attrib)) {
-                            field.setAccessible(true);
                             return field.get(obj);
                         }
                     }