Internal packages that existed in JDK 8 and are no longer open in JDK 17
------------------------------------------------------------------------

com.sun.accessibility.internal.resources
com.sun.beans
com.sun.beans.decoder
com.sun.beans.editors
com.sun.beans.finder
com.sun.beans.infos
com.sun.beans.util
com.sun.crypto.provider
com.sun.imageio.plugins.bmp
com.sun.imageio.plugins.common
com.sun.imageio.plugins.gif
com.sun.imageio.plugins.jpeg
com.sun.imageio.plugins.png
com.sun.imageio.plugins.wbmp
com.sun.imageio.spi
com.sun.imageio.stream
com.sun.java.swing
com.sun.java.swing.plaf.gtk
com.sun.java.swing.plaf.gtk.resources
com.sun.java.swing.plaf.motif
com.sun.java.swing.plaf.motif.resources
com.sun.java_cup.internal.runtime
com.sun.jmx.defaults
com.sun.jmx.interceptor
com.sun.jmx.mbeanserver
com.sun.jmx.remote.internal
com.sun.jmx.remote.protocol.rmi
com.sun.jmx.remote.security
com.sun.jmx.remote.util
com.sun.jndi.dns
com.sun.jndi.ldap
com.sun.jndi.ldap.ext
com.sun.jndi.ldap.pool
com.sun.jndi.ldap.sasl
com.sun.jndi.rmi.registry
com.sun.jndi.toolkit.ctx
com.sun.jndi.toolkit.dir
com.sun.jndi.toolkit.url
com.sun.jndi.url.dns
com.sun.jndi.url.ldap
com.sun.jndi.url.ldaps
com.sun.jndi.url.rmi
com.sun.media.sound
com.sun.naming.internal
com.sun.org.apache.bcel.internal
com.sun.org.apache.bcel.internal.classfile
com.sun.org.apache.bcel.internal.generic
com.sun.org.apache.bcel.internal.util
com.sun.org.apache.xalan.internal
com.sun.org.apache.xalan.internal.extensions
com.sun.org.apache.xalan.internal.lib
com.sun.org.apache.xalan.internal.res
com.sun.org.apache.xalan.internal.templates
com.sun.org.apache.xalan.internal.utils
com.sun.org.apache.xalan.internal.xsltc
com.sun.org.apache.xalan.internal.xsltc.compiler
com.sun.org.apache.xalan.internal.xsltc.compiler.util
com.sun.org.apache.xalan.internal.xsltc.dom
com.sun.org.apache.xalan.internal.xsltc.runtime
com.sun.org.apache.xalan.internal.xsltc.runtime.output
com.sun.org.apache.xalan.internal.xsltc.trax
com.sun.org.apache.xalan.internal.xsltc.util
com.sun.org.apache.xerces.internal.dom
com.sun.org.apache.xerces.internal.dom.events
com.sun.org.apache.xerces.internal.impl
com.sun.org.apache.xerces.internal.impl.dtd
com.sun.org.apache.xerces.internal.impl.dtd.models
com.sun.org.apache.xerces.internal.impl.dv
com.sun.org.apache.xerces.internal.impl.dv.dtd
com.sun.org.apache.xerces.internal.impl.dv.util
com.sun.org.apache.xerces.internal.impl.dv.xs
com.sun.org.apache.xerces.internal.impl.io
com.sun.org.apache.xerces.internal.impl.msg
com.sun.org.apache.xerces.internal.impl.validation
com.sun.org.apache.xerces.internal.impl.xpath
com.sun.org.apache.xerces.internal.impl.xpath.regex
com.sun.org.apache.xerces.internal.impl.xs
com.sun.org.apache.xerces.internal.impl.xs.identity
com.sun.org.apache.xerces.internal.impl.xs.models
com.sun.org.apache.xerces.internal.impl.xs.opti
com.sun.org.apache.xerces.internal.impl.xs.traversers
com.sun.org.apache.xerces.internal.impl.xs.util
com.sun.org.apache.xerces.internal.jaxp
com.sun.org.apache.xerces.internal.jaxp.datatype
com.sun.org.apache.xerces.internal.jaxp.validation
com.sun.org.apache.xerces.internal.parsers
com.sun.org.apache.xerces.internal.util
com.sun.org.apache.xerces.internal.utils
com.sun.org.apache.xerces.internal.xinclude
com.sun.org.apache.xerces.internal.xni
com.sun.org.apache.xerces.internal.xni.grammars
com.sun.org.apache.xerces.internal.xni.parser
com.sun.org.apache.xerces.internal.xpointer
com.sun.org.apache.xerces.internal.xs
com.sun.org.apache.xerces.internal.xs.datatypes
com.sun.org.apache.xml.internal.dtm
com.sun.org.apache.xml.internal.dtm.ref
com.sun.org.apache.xml.internal.dtm.ref.dom2dtm
com.sun.org.apache.xml.internal.dtm.ref.sax2dtm
com.sun.org.apache.xml.internal.res
com.sun.org.apache.xml.internal.security
com.sun.org.apache.xml.internal.security.algorithms
com.sun.org.apache.xml.internal.security.algorithms.implementations
com.sun.org.apache.xml.internal.security.c14n
com.sun.org.apache.xml.internal.security.c14n.helper
com.sun.org.apache.xml.internal.security.c14n.implementations
com.sun.org.apache.xml.internal.security.exceptions
com.sun.org.apache.xml.internal.security.keys
com.sun.org.apache.xml.internal.security.keys.content
com.sun.org.apache.xml.internal.security.keys.content.keyvalues
com.sun.org.apache.xml.internal.security.keys.content.x509
com.sun.org.apache.xml.internal.security.keys.keyresolver
com.sun.org.apache.xml.internal.security.keys.keyresolver.implementations
com.sun.org.apache.xml.internal.security.keys.storage
com.sun.org.apache.xml.internal.security.keys.storage.implementations
com.sun.org.apache.xml.internal.security.signature
com.sun.org.apache.xml.internal.security.signature.reference
com.sun.org.apache.xml.internal.security.transforms
com.sun.org.apache.xml.internal.security.transforms.implementations
com.sun.org.apache.xml.internal.security.transforms.params
com.sun.org.apache.xml.internal.security.utils
com.sun.org.apache.xml.internal.security.utils.resolver
com.sun.org.apache.xml.internal.security.utils.resolver.implementations
com.sun.org.apache.xml.internal.serialize
com.sun.org.apache.xml.internal.serializer
com.sun.org.apache.xml.internal.serializer.utils
com.sun.org.apache.xml.internal.utils
com.sun.org.apache.xml.internal.utils.res
com.sun.org.apache.xpath.internal
com.sun.org.apache.xpath.internal.axes
com.sun.org.apache.xpath.internal.compiler
com.sun.org.apache.xpath.internal.functions
com.sun.org.apache.xpath.internal.jaxp
com.sun.org.apache.xpath.internal.objects
com.sun.org.apache.xpath.internal.operations
com.sun.org.apache.xpath.internal.patterns
com.sun.org.apache.xpath.internal.res
com.sun.rmi.rmid
com.sun.rowset
com.sun.rowset.internal
com.sun.rowset.providers
com.sun.security.ntlm
com.sun.security.sasl
com.sun.security.sasl.digest
com.sun.security.sasl.gsskerb
com.sun.security.sasl.ntlm
com.sun.security.sasl.util
com.sun.swing.internal.plaf.basic.resources
com.sun.swing.internal.plaf.metal.resources
com.sun.swing.internal.plaf.synth.resources
com.sun.tools.classfile
com.sun.tools.doclint
com.sun.tools.doclint.resources
com.sun.tools.example.debug.expr
com.sun.tools.example.debug.tty
com.sun.tools.javac.api
com.sun.tools.javac.code
com.sun.tools.javac.comp
com.sun.tools.javac.file
com.sun.tools.javac.jvm
com.sun.tools.javac.main
com.sun.tools.javac.model
com.sun.tools.javac.parser
com.sun.tools.javac.processing
com.sun.tools.javac.resources
com.sun.tools.javac.tree
com.sun.tools.javac.util
com.sun.tools.javap
com.sun.tools.javap.resources
com.sun.tools.jdeps
com.sun.tools.jdeps.resources
com.sun.tools.jdi
com.sun.tools.jdi.resources
com.sun.tools.script.shell
com.sun.xml.internal.stream
com.sun.xml.internal.stream.dtd
com.sun.xml.internal.stream.dtd.nonvalidating
com.sun.xml.internal.stream.events
com.sun.xml.internal.stream.util
com.sun.xml.internal.stream.writers
java.awt.dnd.peer
java.awt.peer
jdk.internal.org.objectweb.asm
jdk.internal.org.objectweb.asm.commons
jdk.internal.org.objectweb.asm.signature
jdk.internal.org.objectweb.asm.tree
jdk.internal.org.objectweb.asm.tree.analysis
jdk.internal.org.objectweb.asm.util
jdk.internal.org.xml.sax
jdk.internal.org.xml.sax.helpers
jdk.internal.util.xml
jdk.internal.util.xml.impl
jdk.jfr.events
org.jcp.xml.dsig.internal
org.jcp.xml.dsig.internal.dom
sun.awt
sun.awt.X11
sun.awt.datatransfer
sun.awt.dnd
sun.awt.event
sun.awt.geom
sun.awt.im
sun.awt.image
sun.awt.resources
sun.awt.shell
sun.awt.util
sun.font
sun.instrument
sun.invoke
sun.invoke.empty
sun.invoke.util
sun.java2d
sun.java2d.cmm
sun.java2d.cmm.lcms
sun.java2d.loops
sun.java2d.opengl
sun.java2d.pipe
sun.java2d.pipe.hw
sun.java2d.x11
sun.java2d.xr
sun.jvmstat.monitor
sun.jvmstat.monitor.event
sun.jvmstat.monitor.remote
sun.jvmstat.perfdata.monitor
sun.jvmstat.perfdata.monitor.protocol.file
sun.jvmstat.perfdata.monitor.protocol.local
sun.jvmstat.perfdata.monitor.protocol.rmi
sun.jvmstat.perfdata.monitor.v1_0
sun.jvmstat.perfdata.monitor.v2_0
sun.launcher
sun.launcher.resources
sun.management
sun.management.counter
sun.management.counter.perf
sun.management.jdp
sun.management.jmxremote
sun.net
sun.net.dns
sun.net.ftp
sun.net.ftp.impl
sun.net.httpserver
sun.net.idn
sun.net.sdp
sun.net.smtp
sun.net.spi
sun.net.util
sun.net.www
sun.net.www.content.text
sun.net.www.http
sun.net.www.protocol.file
sun.net.www.protocol.ftp
sun.net.www.protocol.http
sun.net.www.protocol.http.logging
sun.net.www.protocol.http.ntlm
sun.net.www.protocol.http.spnego
sun.net.www.protocol.https
sun.net.www.protocol.jar
sun.net.www.protocol.mailto
sun.nio
sun.nio.ch
sun.nio.ch.sctp
sun.nio.cs
sun.nio.cs.ext
sun.nio.fs
sun.print
sun.print.resources
sun.reflect.annotation
sun.reflect.generics.factory
sun.reflect.generics.parser
sun.reflect.generics.reflectiveObjects
sun.reflect.generics.repository
sun.reflect.generics.scope
sun.reflect.generics.tree
sun.reflect.generics.visitor
sun.reflect.misc
sun.rmi.log
sun.rmi.registry
sun.rmi.runtime
sun.rmi.server
sun.rmi.transport
sun.rmi.transport.tcp
sun.security.action
sun.security.ec
sun.security.internal.interfaces
sun.security.internal.spec
sun.security.jca
sun.security.jgss
sun.security.jgss.krb5
sun.security.jgss.spi
sun.security.jgss.spnego
sun.security.jgss.wrapper
sun.security.krb5
sun.security.krb5.internal
sun.security.krb5.internal.ccache
sun.security.krb5.internal.crypto
sun.security.krb5.internal.crypto.dk
sun.security.krb5.internal.ktab
sun.security.krb5.internal.rcache
sun.security.krb5.internal.util
sun.security.pkcs
sun.security.pkcs10
sun.security.pkcs11
sun.security.pkcs11.wrapper
sun.security.pkcs12
sun.security.provider
sun.security.provider.certpath
sun.security.provider.certpath.ldap
sun.security.provider.certpath.ssl
sun.security.rsa
sun.security.smartcardio
sun.security.ssl
sun.security.timestamp
sun.security.tools
sun.security.tools.jarsigner
sun.security.tools.keytool
sun.security.util
sun.security.validator
sun.security.x509
sun.swing
sun.swing.icon
sun.swing.plaf
sun.swing.plaf.synth
sun.swing.table
sun.swing.text
sun.swing.text.html
sun.text
sun.text.resources
sun.tools.attach
sun.tools.jar
sun.tools.jar.resources
sun.tools.jcmd
sun.tools.jconsole
sun.tools.jconsole.inspector
sun.tools.jinfo
sun.tools.jmap
sun.tools.jps
sun.tools.jstack
sun.tools.jstat
sun.tools.jstatd
sun.tools.serialver
sun.util
sun.util.calendar
sun.util.cldr
sun.util.locale
sun.util.locale.provider
sun.util.logging
sun.util.logging.resources
sun.util.resources
sun.util.spi

Exported packages that existed in JDK 8 and are no longer open in JDK 17
------------------------------------------------------------------------

com.sun.jarsigner
com.sun.java.accessibility.util
com.sun.jdi
com.sun.jdi.connect
com.sun.jdi.connect.spi
com.sun.jdi.event
com.sun.jdi.request
com.sun.management
com.sun.net.httpserver
com.sun.net.httpserver.spi
com.sun.nio.file
com.sun.nio.sctp
com.sun.security.auth
com.sun.security.auth.callback
com.sun.security.auth.login
com.sun.security.auth.module
com.sun.security.jgss
com.sun.source.doctree
com.sun.source.tree
com.sun.source.util
com.sun.tools.attach
com.sun.tools.attach.spi
com.sun.tools.javac
com.sun.tools.jconsole
java.applet
java.awt
java.awt.color
java.awt.datatransfer
java.awt.dnd
java.awt.event
java.awt.font
java.awt.geom
java.awt.im
java.awt.im.spi
java.awt.image
java.awt.image.renderable
java.awt.print
java.beans
java.beans.beancontext
java.io
java.lang
java.lang.annotation
java.lang.instrument
java.lang.invoke
java.lang.management
java.lang.ref
java.lang.reflect
java.math
java.net
java.nio
java.nio.channels
java.nio.channels.spi
java.nio.charset
java.nio.charset.spi
java.nio.file
java.nio.file.attribute
java.nio.file.spi
java.rmi
java.rmi.activation
java.rmi.dgc
java.rmi.registry
java.rmi.server
java.security
java.security.cert
java.security.interfaces
java.security.spec
java.sql
java.text
java.text.spi
java.time
java.time.chrono
java.time.format
java.time.temporal
java.time.zone
java.util
java.util.concurrent
java.util.concurrent.atomic
java.util.concurrent.locks
java.util.function
java.util.jar
java.util.logging
java.util.prefs
java.util.regex
java.util.spi
java.util.stream
java.util.zip
javax.accessibility
javax.annotation.processing
javax.crypto
javax.crypto.interfaces
javax.crypto.spec
javax.imageio
javax.imageio.event
javax.imageio.metadata
javax.imageio.plugins.bmp
javax.imageio.plugins.jpeg
javax.imageio.spi
javax.imageio.stream
javax.lang.model
javax.lang.model.element
javax.lang.model.type
javax.lang.model.util
javax.management
javax.management.loading
javax.management.modelmbean
javax.management.monitor
javax.management.openmbean
javax.management.relation
javax.management.remote
javax.management.remote.rmi
javax.management.timer
javax.naming
javax.naming.directory
javax.naming.event
javax.naming.ldap
javax.naming.spi
javax.net
javax.net.ssl
javax.print
javax.print.attribute
javax.print.attribute.standard
javax.print.event
javax.rmi.ssl
javax.script
javax.security.auth
javax.security.auth.callback
javax.security.auth.kerberos
javax.security.auth.login
javax.security.auth.spi
javax.security.auth.x500
javax.security.cert
javax.security.sasl
javax.smartcardio
javax.sound.midi
javax.sound.midi.spi
javax.sound.sampled
javax.sound.sampled.spi
javax.sql
javax.sql.rowset
javax.sql.rowset.serial
javax.sql.rowset.spi
javax.swing
javax.swing.border
javax.swing.colorchooser
javax.swing.event
javax.swing.filechooser
javax.swing.plaf
javax.swing.plaf.basic
javax.swing.plaf.metal
javax.swing.plaf.multi
javax.swing.plaf.nimbus
javax.swing.plaf.synth
javax.swing.table
javax.swing.text
javax.swing.text.html
javax.swing.text.html.parser
javax.swing.text.rtf
javax.swing.tree
javax.swing.undo
javax.tools
javax.transaction.xa
javax.xml
javax.xml.crypto
javax.xml.crypto.dom
javax.xml.crypto.dsig
javax.xml.crypto.dsig.dom
javax.xml.crypto.dsig.keyinfo
javax.xml.crypto.dsig.spec
javax.xml.datatype
javax.xml.namespace
javax.xml.parsers
javax.xml.stream
javax.xml.stream.events
javax.xml.stream.util
javax.xml.transform
javax.xml.transform.dom
javax.xml.transform.sax
javax.xml.transform.stax
javax.xml.transform.stream
javax.xml.validation
javax.xml.xpath
jdk.net
netscape.javascript
org.ietf.jgss
org.w3c.dom
org.w3c.dom.bootstrap
org.w3c.dom.css
org.w3c.dom.events
org.w3c.dom.html
org.w3c.dom.ls
org.w3c.dom.ranges
org.w3c.dom.stylesheets
org.w3c.dom.traversal
org.w3c.dom.views
org.w3c.dom.xpath
org.xml.sax
org.xml.sax.ext
org.xml.sax.helpers