CODEWITHSUNDEEP
javatry-with-resources
Sebastian Westermann
Sebastian Westermann

Reputation: 33

Access declared "try-with"-resource in catch-clause

I have an autoclosable class named "VirtuellTx". It is a special kind of transaction and supports a "commit()"- and "rollback()"-Method. How can I access the declared "VirtuellTx"-resource in the catch-block to perform a rollback()? 

try (VirtuellTx lVtx = new VirtuellTx()) {
    // do something ...
    lVtx.commit();
} catch (Exception e) {
    lVtx.rollback();
}

The catch-block can not access lVtx: "lVtx cannot be resolved"

Upvotes: 1

Views: 98

Answers (1)

Andy Turner
Andy Turner

Reputation: 140534

Resources are only in scope inside the block of the try-with-resources statement. JLS says:

The scope of a variable declared in the ResourceSpecification of a try-with-resources statement (§14.20.3) is from the declaration rightward over the remainder of the ResourceSpecification and the entire try block associated with the try-with-resources statement.

Move the catch inside:

try (VirtuellTx lVtx = new VirtuellTx()) {
  try {
    // do something ...
    lVTX.commit();
  } catch (Exception e) {
    lVtx.rollback();
  }
}

Upvotes: 3

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