FULL PRODUCT VERSION :
Stefans-iMac:jaxp reich$ java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Not OS dependent

A DESCRIPTION OF THE PROBLEM :
The following six classes contain copy and paste code which leads to a file descriptor leak if the file "jaxp.properties" exists in JAVA_HOME.

src/javax/xml/xpath/XPathFactoryFinder.java
src/javax/xml/validation/SchemaFactoryFinder.java
src/javax/xml/transform/FactoryFinder.java
src/javax/xml/stream/FactoryFinder.java
src/javax/xml/datatype/FactoryFinder

These classes load a property file from the file system without closing it, like this:
cacheProps.load(ss.getFileInputStream(f));

The correct idiom is this:
try (FileInputStream propertyInputStream = ss.getFileInputStream(f)) {
    cacheProps.load(propertyInputStream);
}


ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Obvious from the source code


REPRODUCIBILITY :
This bug can be reproduced occasionally.

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I provided a fix at https://gist.github.com/stefanreich/8b1388cc795b22a0e472
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