Using the Maven wizard  to create a brand new Netbeans Application and trying 
to run the code it generates fails to start.

This isn’t a good experience for anyone starting out with the Platform creation.

Are there any docs that state the error below?

Thanks!

Executing: /bin/sh -c 
'/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/bin/nb26platformtest'
 '--userdir' 
'/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/userdir' 
'-J-Dnetbeans.logger.console=true' '-J-ea' '--branding' 'nb26platformtest' 
'--jdkhome' '/Users/tmulle/.sdkman/candidates/java/21.0.7-tem'
May 27, 2025 2:16:41 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 @3941a79c
        at 
java.base/java.lang.reflect.AccessibleObject.throwInaccessibleObjectException(AccessibleObject.java:391)
        at 
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:367)
        at 
java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:315)
        at 
java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:183)
        at java.base/java.lang.reflect.Field.setAccessible(Field.java:177)
        at 
org.netbeans.ProxyURLStreamHandlerFactory.register(ProxyURLStreamHandlerFactory.java:59)
        at org.netbeans.JarClassLoader.<clinit>(JarClassLoader.java:143)
        at org.netbeans.MainImpl.execute(MainImpl.java:166)
        at org.netbeans.MainImpl.main(MainImpl.java:60)
        at org.netbeans.Main.main(Main.java:58)

-------------------------------------------------------------------------------
>Log Session: Tuesday, May 27, 2025, 2:16:41 PM Eastern Daylight Time
>System Info: 
  Product Version         = NB26PlatformTest 
25-0f82d968998b78ef4d323537d1149eb68e747d9a
  Operating System        = Mac OS X version 15.5 running on aarch64
  Java; VM; Vendor        = 21.0.7; OpenJDK 64-Bit Server VM 21.0.7+6-LTS; 
Eclipse Adoptium
  Runtime                 = OpenJDK Runtime Environment 21.0.7+6-LTS
  Java Home               = /Users/tmulle/.sdkman/candidates/java/21.0.7-tem
  System Locale; Encoding = en_US (nb26platformtest); UTF-8
  Home Directory          = /Users/tmulle
  Current Directory       = 
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application
  User Directory          = 
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/userdir
  Cache Directory         = /Users/tmulle/Library/Caches/nb26platformtest/dev
  Installation            = 
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/bin
                            
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform
                            
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/etc
                            
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/java
                            
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/nb26platformtest
                            
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/extra
                            
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform
  Boot & Ext. Classpath   = 
  Application Classpath   = 
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/lib/boot.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/lib/org-openide-modules.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/lib/org-openide-util-lookup.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/lib/org-openide-util-ui.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/lib/org-openide-util.jar
  Startup Classpath       = 
/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/asm-9.7.1.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/org-netbeans-libs-asm.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/org-openide-filesystems-compat8.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/org-openide-filesystems.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/asm-tree-9.7.1.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/core.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/core-base.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/platform/core/asm-commons-9.7.1.jar:/Users/tmulle/NetBeansProjects/NB26PlatformTest/application/target/nb26platformtest/nb26platformtest/core/locale/core_nb26platformtest.jar
  Java Boot Modules       = [java.base, java.compiler, java.datatransfer, 
java.desktop, java.instrument, java.logging, java.management, 
java.management.rmi, java.naming, java.net.http, java.prefs, java.rmi, 
java.scripting, java.security.jgss, java.security.sasl, java.smartcardio, 
java.sql, java.sql.rowset, java.transaction.xa, java.xml, java.xml.crypto, 
jdk.accessibility, jdk.attach, jdk.charsets, jdk.compiler, jdk.crypto.cryptoki, 
jdk.crypto.ec, jdk.dynalink, jdk.editpad, jdk.httpserver, jdk.internal.ed, 
jdk.internal.jvmstat, jdk.internal.le, jdk.internal.opt, jdk.jartool, 
jdk.javadoc, jdk.jconsole, jdk.jdeps, jdk.jdi, jdk.jdwp.agent, jdk.jfr, 
jdk.jlink, jdk.jpackage, jdk.jshell, jdk.jsobject, jdk.jstatd, jdk.localedata, 
jdk.management, jdk.management.agent, jdk.management.jfr, jdk.naming.dns, 
jdk.naming.rmi, jdk.net, jdk.nio.mapmode, jdk.random, jdk.sctp, 
jdk.security.auth, jdk.security.jgss, jdk.unsupported, jdk.unsupported.desktop, 
jdk.xml.dom, jdk.zipfs]
-------------------------------------------------------------------------------
java.lang.UnsupportedOperationException: The Security Manager is deprecated and 
will be removed in a future release
        at java.base/java.lang.System.setSecurityManager(System.java:430)
        at org.netbeans.TopSecurityManager.install(TopSecurityManager.java:525)
        at 
org.netbeans.core.NbLifecycleManager.advancePolicy(NbLifecycleManager.java:69)
        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:1583)
WARNING [org.netbeans.modules.autoupdate.ui.actions.AutoupdateSettings]: The 
property "netbeans.default_userdir_root" was not set!
INFO [org.netbeans.core.startup.NbEvents]: Turning on modules:
        org.openide.util.lookup [8.61 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.util [9.35 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.util.ui [9.36 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.modules [7.75 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.api.annotations.common/1 [1.55 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.filesystems [9.40 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.awt [7.95 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.api.progress/1 [1.75 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.api.progress.nb [1.75 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.dialogs [7.74 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.nodes [7.72 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.windows [6.104 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.libs.jsvg [1.22.0.1 1 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.util.ui.svg [1.21 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.editor.mimelookup/1 [1.67 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.text [6.96 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.api.scripting [1.24 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.swing.tabcontrol [1.84 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.swing.outline [1.61 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.explorer [6.89 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.actions [6.66 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.queries/1 [1.70 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.api.templates [1.35 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.filesystems.nb [9.37 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.loaders [7.97 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.api.intent [1.29 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.api.io [1.30 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.io [1.76 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.openide.filesystems.compat8 [9.36 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.swing.plaf [1.69 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.keyring [1.51 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.libs.asm [5.30 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.bootstrap/1 [2.106 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.startup.base [1.89.0.1 1 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.startup/1 [1.90.0.1 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.sampler [1.41 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core/2 [3.78 25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.spi.quicksearch [1.54 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.options.api/1 [1.72 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.libs.flatlaf/1 [1.21 3.5.2 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.swing.laf.flatlaf [1.20 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.swing.laf.dark/1 [2.22.0.2 2 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.templates/1 [1.34 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.settings/1 [1.76 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.sendopts/2 [2.63 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.progress.ui [1.60 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.print [7.53 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.options.keymap [1.64 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.masterfs/2 [2.82.0.2 2 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.masterfs.ui [2.30.0.2 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.masterfs.nio2 [1.42 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.libs.jna/2 [2.22 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.masterfs.macosx [1.40 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.keyring.fallback [1.35 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.keyring.impl [1.51 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.janitor [1.20 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.favorites/1 [1.73 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.editor.mimelookup.impl/1 [1.59 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.autoupdate.services [1.83 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.autoupdate.cli [1.41 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.windows/2 [2.112 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.ui/1 [1.72 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.libs.osgi [1.49 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.libs.felix [2.42 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.autoupdate.ui [1.73 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.core.kit [1.58 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.modules.applemenu/1 [1.64 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.libs.jna.platform/2 [2.22 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.output2/1 [1.69 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.network [1.39 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.netigso [1.58 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.nativeaccess/1 [1.58 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.multitabs/1 [1.39.0.1 1 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        org.netbeans.core.io.ui/1 [1.57 
25-0f82d968998b78ef4d323537d1149eb68e747d9a]
        com.rajant.NB26PlatformTest.branding [1.0 1.0-20250527 202505271812]
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network 
proxy resolver: Mac
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network 
proxy reloading failed! Trying fallback resolver.
INFO [org.netbeans.core.network.proxy.fallback.FallbackNetworkProxy]: Fallback 
system proxy resolver: no http_proxy variable found
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network 
proxy reloading succeeded. Fallback provider was successful.
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network 
proxy - mode: direct
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network 
proxy: fell to default (correct if direct mode went before)
INFO [org.netbeans.ui.metrics.laf]: USG_LOOK_AND_FEEL
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