Valid JavaBeans names for boolean getter methods

Question

I know most variable names will work with \"is\", such as isBlue(), but is \"has\" also a valid prefix, like hasProperty()?

Answer 1

Jon Skeet noted that according to the specification it is not valid. Also, canX, shouldX, and the likes are not valid. Which is rather unfortunate. Here is a way to check whether a given property has a valid getter:

BeanInfo info = Introspector.getBeanInfo(Item.class);
Item itm = new Item();
for (PropertyDescriptor pd : info.getPropertyDescriptors()) {
    System.out.println(pd.getName() + " : " + pd.getReadMethod());
}

The class Item should be a javabean with a foo property, and a getter. If the read method is null, it means there is no valid getter defined according to the javabeans spec.