Get Boolean Value from VM Parameter in Scala

Question

How do I elegantly get a Boolean value from a VM parameter? My solution is not as easy as I

1. have to test if it is null otherwise I will get IllegalArgumentException

2. have to convert the entire String to upper or lower case and test if it is exactly "false" or "true" otherwise I will have the same exception thrown at my face.

i.e.

    val property = System.getProperty("some.property.name")
    property != null && property.toLowerCase == "true"

Is there another way out of this? Thanks.

Answer 1

Scala has the sys.props object which wraps the Java system properties API, so you can deal with Option instead of null.

sys.props.get("property.name") exists (_ equalsIgnoreCase "true")