Groovy, try with resources alternative

Question

I am new to Groovy. I used to use the try-with-resources construct in my Java code while working with I / O streams.

Could you advise if there is any analogue of such a construction in Groovy?

Answer 1

Check out the docs on Groovy IO and related Javadoc. It presents the constructions withStream , withWriter , withReader which are a means of receiving threads with automatic closure

Answer 2

Groovy 2.3 also has withCloseable which will work on anything that implements Closeable.

Answer 3

The simplest attempt to use resources for all versions of Groovy is as follows (it even works with the AutoCloseable interface). Where the Thing class is a AutoCloseable class or implements AutoCloseable .

 new Thing().with { res -> try { // do stuff with res here } finally { res.close() } } 

Which is equivalent in later versions of Groovy:

 new Thing().withCloseable { res -> // do stuff with res here }