hashCode &amp; equals: <https://docs.oracle.com/ja...

# announcements

[miha-x64]

hashCode & equals:
https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html#hashCode()
Effective Java 2nd Edition, Item 9

toString, in general, — for debugg
https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html#toString()
Effective Java 2nd Edition, Item 10

destructuring — just sugar

-> #C0B8MA7FA