The issue is that in Java 9 the platform classloader is not an URLClassLoader anymore. It was never specified to be one, but it happened to be so in all widely used implementations.

Il 27 set 2017 20:13, "Gregory Baryza" <gabaryza@gmail.com> ha scritto:

I will add that the build warns not to use Java 9. It appears it should fail right there.

On Wed, Sep 27, 2017 at 2:09 PM, Gregory Baryza <gabaryza@gmail.com> wrote:

I am not a Java 9 expert either. I just installed and switched the value of JAVA_HOME to point to it. I ran ant under Windows 10 in the build directory and sent the output to a log file. That's all I know at the moment.

On Wed, Sep 27, 2017 at 1:56 PM, Robert Goldman <rpgoldman@sift.net> wrote:

That's weird, because looking at this http://download.java.net/java/jdk9/docs/api/java/net/URLClassLoader.html#getURLs-- (http://preview.tinyurl.com/yat6a6oq), it looks like that method is still supplied in Java 9.

But I'm not a Java person at all, so I could easily be wrong about this.

On 27 Sep 2017, at 12:51, Gregory Baryza wrote:

I tried compiling it and was presented with the following error:
     ....
     [java] ; Loading
C:/Downloads/Armed_Bear_Lisp/abcl-src-1.5.0/build/classes/org/armedbear/lisp/abcl-contrib.abcl
...
     [java]
     [java] ; Compilation unit finished
     [java] ;   The following functions were used but not defined:
     [java] ;     SYSTEM::SOURCE
     [java]
     [java] 311.988 seconds real time
     [java] 249904041 cons cells
     [java] JAVA-EXCEPTION: Java exception
'java.lang.NoSuchMethodException: No applicable method named getURLs found
in java.lang.ClassLoader or
jdk.internal.loader.ClassLoaders$AppClassLoader'.

BUILD FAILED
C:\Downloads\Armed_Bear_Lisp\abcl-src-1.5.0\build.xml:280: The following
error occurred while executing this line:
C:\Downloads\Armed_Bear_Lisp\abcl-src-1.5.0\build.xml:299: Java returned: -1

Total time: 6 minutes 11 seconds

It compiled successfully under JDK_1_8_0_144.  Has anyone else seen this?