JavaClass getClass(String className)

Returns a JavaClass for the given class name.

Source 

static JavaClass getClass(String className) {
  JavaClass cacheEntry = _classCache[className];
  if (cacheEntry != null)
    return cacheEntry;

  // Load and initialize the class
  JniClass jniClass = _reflect.classClazz.callStaticObjectMethod(
      _reflect.classForName,
      [className, true, JniApi.getClassLoader()]
  );

  JavaClass javaClass = new JavaClass._(jniClass);
  _classCache[javaClass.className] = javaClass;
  return javaClass;
}