CLASSES

Instance Initializers

8.6

It is a compile-time error if a static class contains a usage of a non-static member of an enclosing class.

A member interface is implicitly static (§9.1.1). It is permitted for the declaration of a member interface to redundantly specify the static modifier.

8.6 Instance Initializers

An instance initializer declared in a class is executed when an instance of the class is created (§12.5, §15.9, §8.8.7.1).

InstanceInitializer:

Block

It is a compile-time error if an instance initializer cannot complete normally (§14.21).

It is a compile-time error if a return statement (§14.17) appears anywhere within an instance initializer.

Instance initializers are permitted to refer to the current object via the keyword this (§15.8.3), to use the keyword super (§15.11.2, §15.12), and to use any type variables in scope.

Use of instance variables whose declarations appear textually after the use is sometimes restricted, even though these instance variables are in scope. See §8.3.2.3 for the precise rules governing forward reference to instance variables.

Exception checking for an instance initializer is specified in §11.2.3.

8.7 Static Initializers

A static initializer declared in a class is executed when the class is initialized (§12.4.2). Together with any field initializers for class variables (§8.3.2), static initializers may be used to initialize the class variables of the class.

StaticInitializer:

static Block

It is a compile-time error if a static initializer cannot complete normally (§14.21).

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