Trait to handle try-with-resources feature for Java 8

CloseableTest.groovy

import java.io.Closeable
import java.io.IOException

trait Closing {
    def closeQuietly(){ 
        try{
            println "Closing"
            this.close()
        } catch (IOException e) {
            
        }
    }
}

Closeable clos = new FileInputStream('test.txt')
assert clos.available()

(clos as Closing).closeQuietly()