Order of Fields returned by Class.getFields()

Question

Javadoc for Class.getFields() say: \"The elements in the array returned are not sorted and are not in any particular order.\"

Any hints on how the order act

Answer 1

An natural order of properties offers the Ujorm framework with its key-value objects using the readKeys() method. Each item of the result have got similar features like the Field including reading and writting values from/to the object. For example see the next code:

 public class User extends AbstractUjo implements Serializable {

     /** Factory */
     private static final KeyFactory f = newFactory(User.class);
     /** Keys: */
     public static final Key PID = f.newKey();
     public static final Key CODE = f.newKey();
     public static final Key NAME = f.newKey();
     public static final Key CASH = f.newKey();

     static {
         f.lock();
     }

     // Setters:
     public void setPid(Long pid) {
         PID.setValue(this, pid);
     }

     public void setCode(Integer code) {
         CODE.setValue(this, code);
     }

     public void setName(String name) {
         NAME.setValue(this, name);
     }

     public void setCash(Double cash) {
         CASH.setValue(this, cash);
     }

     // Getters ...
 }

The natural order of keys can be iterated by:

 for (Key key : new User().readKeys()) {
     System.out.println("Key: " + key);
 }

See the documentation for more information.