Unable to make field transient java.net.URLStreamHandler java.net.URL.handler accessible

[Claudio Rosati <cl...@me.com.INVALID>]

Hello all,

After some years not using NetBeans RCP (only de IDE), I’ve tried to follow the "NetBeans Platform Quick Start Using Maven” using NetBeans 16 with Java 19.

When I try to "Build with Dependencies” the app the following error appears at compilation time:

Running es.intellectusetanima.mavenplatformwordapp.ApplicationTest
Feb 14, 2023 1:09:17 PM org.netbeans.ProxyURLStreamHandlerFactory register
SEVERE: No way to find original stream handler for jar protocol
java.lang.reflect.InaccessibleObjectException: Unable to make field transient java.net.URLStreamHandler java.net.URL.handler accessible: module java.base does not "opens java.net" to unnamed module @7e0ea639
	at java.base/java.lang.reflect.AccessibleObject.throwInaccessibleObjectException(AccessibleObject.java:387)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:363)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:311)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:180)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:174)
	at org.netbeans.ProxyURLStreamHandlerFactory.register(ProxyURLStreamHandlerFactory.java:59)
	at org.netbeans.JarClassLoader.<clinit>(JarClassLoader.java:142)
	at org.netbeans.MainImpl.execute(MainImpl.java:153)
	at org.netbeans.MainImpl.main(MainImpl.java:60)
	at org.netbeans.Main.main(Main.java:58)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:578)
	at org.netbeans.junit.NbModuleSuite$S.runInRuntimeContainer(NbModuleSuite.java:906)
	at org.netbeans.junit.NbModuleSuite$S.access$100(NbModuleSuite.java:661)
	at org.netbeans.junit.NbModuleSuite$S$1.protect(NbModuleSuite.java:682)
	at junit.framework.TestResult.runProtected(TestResult.java:142)
	at org.netbeans.junit.NbModuleSuite$S.run(NbModuleSuite.java:678)
	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:90)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:578)
	at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
	at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
	at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:113)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)

If I try to run the app, I have the previous error plus the following:

java.lang.IllegalAccessException: class org.netbeans.TopSecurityManager cannot access class sun.awt.AppContext (in module java.desktop) because module java.desktop does not export sun.awt to unnamed module @5cc73178
	at java.base/jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:420)
	at java.base/java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:709)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at org.netbeans.TopSecurityManager.makeSwingUseSpecialClipboard(TopSecurityManager.java:714)
	at org.netbeans.core.NbLifecycleManager.advancePolicy(NbLifecycleManager.java:71)
	at org.netbeans.core.GuiRunLevel.run(GuiRunLevel.java:84)
	at org.netbeans.core.startup.Main.start(Main.java:316)
	at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:98)
	at java.base/java.lang.Thread.run(Thread.java:1589)

Anyway, the application starts.

Now, how can I get rid of these errors? Do I need a moodule-info.java file? If yes, where? Otherwise?

Claudio

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Claudio Rosati

Calle Tamara 7
Villa Jinámar
35220 Telde, Gran Canaria
España
Skype:  claudio.rosati
Phone:  +39 375 5138 938 (mobile)
E-mail: claudio.rosati@mac.com
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