Converting a Java enumeration to a Scala Map

Question

Is there a way to take a java based API that loops over property names and someone add the key/value pairs to a Scala Map[String, Object] ?

Enumeration properties = something.getPropertyNames();
while (properties.hasMoreElements())
{
    String propName = (String) srcProperties.nextElement();
    Object v = something.getValue(propName);
}

I guess in would be considered Any in scala. It is "anything" untyped for now. — cool breeze
– cool breeze, Commented Dec 20, 2016 at 20:10
An Enumeration is a sequence, how do you want a Map from that? — maasg
– maasg, Commented Dec 20, 2016 at 21:14

maasg · Accepted Answer · 2016-12-20 21:23:49Z

4

I think you are confusing a Java Enumeration with the Properties object it was obtained from. Like in Enumeration propertyNames = props.getPropertyNames()

We cannot create a map from the resulting Enumeration, because it's only a sequence of Strings, but we can obtain a Map[String,String] from the original Properties object.

 import scala.collection.JavaConverters._
 val propertyMap = props.asScala  // mutable map
 // or
 val propertyMap = props.asScala.toMap  // immutable map

edited Dec 20, 2016 at 21:23

answered Dec 20, 2016 at 21:11

maasg

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maasg Over a year ago

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