Adrien Quillet created EASYANT-75:
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Summary: Class.getMethod / Class.invoke: compliance with J2SE 1.7
Key: EASYANT-75
URL: https://issues.apache.org/jira/browse/EASYANT-75
Project: EasyAnt
Issue Type: Bug
Components: Core
Affects Versions: 0.9, 0.10
Reporter: Adrien Quillet
Priority: Blocker
When running EasyAnt with J2SE 1.7, calling
{{EasyAntEngine.guessEasyantCoreJarUrl()}} raises a
{{NoSuchMethodException}}/{{IllegalArgumentException}}.
*Code to fix:*
{{EasyAntEngine.getLocalURL = conn.getClass().getMethod("getLocalURL",
(Class<?>) null)}}
{{URL localJarUrl = (URL) getLocalURL.invoke(conn, (Class<?>) null)}}
*Fixed code:*
{{EasyAntEngine.getLocalURL = conn.getClass().getMethod("getLocalURL", null)}}
{{URL localJarUrl = (URL) getLocalURL.invoke(conn, null)}}
*Reason:*
>From JES2 1.7 Javadoc, calling {{getMethod}} or {{invoke}} with no varArg or a
>{{null}} varArg is treated as if the method was called with an empty array
>(compliance with JES2 1.5).
But calling those methods with a {{null}} varArg that is casted to {{Class<?>}}
is treated as an array of {{Class<?>}} that contains one {{null}} element. So
there is no matching method, hence the
{{NoSuchMethodException}}/{{IllegalArgumentException}}.
_see also:_
http://stackoverflow.com/questions/5586862/weird-behaviour-of-getmethod-in-java-reflection-api-can-someone-explain-this
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