Groovy Goodness: GString as Writable

The Groovy API has the interface Writable. Classes that implement this interface are capable of writing their selves to a java.io.Writer object. The interface has one method writeTo() where the code is that writes the contents to a given Writer instance. Most implementations will also use the implementation of the writeTo() method in their toString() implementation.

The GString implementation in Groovy also implements the Writable interface. This means we can redirect the GString contents to some Writer instance if we want to. In the following code we use a FileWriter to write the contents of a GString to a file:

Code written with Groovy 2.2.2

Original article

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About mrhaki

My name is Hubert A. Klein Ikkink also known as mrhaki. I work at the great IT company JDriven. Here I work on projects with Groovy & Grails, Gradle and Spring. At JDriven we focus on SpringSource technologies. All colleagues want to learn new technologies, support craftmanship and are very eager to learn. This is truly a great environment to work in. You can contact me via Google+ or @mrhaki.

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