When use Braces block in Java like this? -

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enter image description here

please see above picture (from wrox beginning spring book)

i have question { } ?

is constructor ? functional block ? block of "accountsmap" ? ?

please explain feature in java ? name of feature ?

it's instance initializer block gets executed each time create instance of class, no matter constructor used. executed prior code of executed constructor. see jls 8.6 more details.


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