using ReflectionToStringBuilder.toString on the "HashMap"

throw java.lang.reflect.InaccessibleObjectException: Unable to make field static final int java.util.HashMap.DEFAULT_INITIAL_CAPACITY accessible: module java.base does not "opens java.util" to unnamed module @37f8bb67

the test code is
@Testpublic void testNestedHashMapToString() {
HashMap<String, HashMap<String, String>> nestedMap = new HashMap<>(); HashMap<String, String> innerMap = new HashMap<>(); innerMap.put("key", "value"); nestedMap.put("nested", innerMap); String result = ReflectionToStringBuilder.toString(nestedMap); // Asserting that the result is not null (NullPointerException is expected) assertNotNull(null, result);}