By: Dushan Hanuska

Dushan Hanuska — Fri, 24 Jul 2009 03:43:25 +0000

As KD said above, the static initialization block is most commonly used to initialize “constant” Maps and Collections. For example:

private static final List COLORS;
static {
List colors = new ArrayList();
colors.add(“red”);
colors.add(“yellow”);
colors.add(“blue”);
COLORS = Collections.unmodifiebleList(colors);
}

By: KD

KD — Thu, 23 Jul 2009 09:07:54 +0000

Good post. One useful case of initialization blocks I have found is in initializing maps & lists, eg:

Map myMap = new HashMap(){
{
put(“Name”, “A Name”);
put(“Age”, 40);
}
};

etc.

Comments on: 3 ways to initialize class attributes in Java

By: Dushan Hanuska

By: KD