In short, if you want to write a map of e.g. constants in Java, which in e.g. Python and Javascript you would write as a literal,
T CON
Java7 suppose to implement following syntax:
Map = { "key1": "value", "key2": "value", "key3": "value", "key4": "value" };
However now you're forced to use solutions proposed by Jorn or Tony Ennis.