Checks if object is auto-boxed primitive + String and Void

isWiderPrimitive.java

public boolean isWiderPrimitive(Object object) {
    if (object == null) {
        return false;
    }
    Class clazz = object.getClass();
    if (clazz == Boolean.class || clazz == Character.class || 
        clazz == Byte.class || clazz == Short.class ||
        clazz == Integer.class || clazz == Long.class || 
        clazz == Float.class || clazz == Double.class ||
        clazz == String.class || clazz == Void.class) {
        return true;
    }
    return false;
}

Check if object is primitive in Java