java 8 - How do I pass a class to a method in Nashorn? -


one of our scripts has following line, calling method in ant provider:

var provider = resource.as(org.apache.tools.ant.types.resources.fileprovider);

since updating java 8, fails error:

java.lang.classcastexception: cannot cast jdk.internal.dynalink.beans.staticclass java.lang.class         @ sun.invoke.util.valueconversions.newclasscastexception(valueconversions.java:461)         @ sun.invoke.util.valueconversions.castreference(valueconversions.java:456)         @ jdk.nashorn.internal.scripts.script$\^eval\_.getfilehack(<eval>:131)         @ jdk.nashorn.internal.scripts.script$\^eval\_.runscript(<eval>:207)

i'm trying figure out has changed nashorn docs, isn't particularly clear. following change use see in documented examples gives same error:

var provider = resource.as(java.type("org.apache.tools.ant.types.resources.fileprovider"));

how convert staticclass java class pass in here?

use .class:

var provider = resource.as(org.apache.tools.ant.types.resources.fileprovider.class);

or 

var provider = resource.as(java.type("org.apache.tools.ant.types.resources.fileprovider").class);

just in java :-)


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