List of foundation-only classes:
java.io.CharArrayReader
java.io.CharArrayWriter
java.io.FilterReader
java.io.FilterWriter
java.io.LineNumberReader
java.io.PipedReader
java.io.PipedWriter
java.io.PushbackReader
java.io.RandomAccessFile
java.io.SequenceInputStream
java.io.StringWriter
java.lang.Compiler
java.lang.UnknownError
java.math.BigDecimal
java.net.Authenticator
java.net.ConnectException
java.net.MulticastSocket
java.net.NoRouteToHostException
java.net.PasswordAuthentication
java.net.ServerSocket
java.net.Socket
java.net.SocketImpl
java.net.SocketImplFactory
java.net.URLDecoder
java.net.URLEncoder
java.security.AlgorithmParameterGenerator
java.security.AlgorithmParameterGeneratorSpi
java.security.DigestInputStream
java.security.KeyPairGenerator
java.security.KeyPairGeneratorSpi
java.security.SignedObject
java.security.acl.Acl
java.security.acl.AclEntry
java.security.acl.AclNotFoundException
java.security.acl.Group
java.security.acl.LastOwnerException
java.security.acl.NotOwnerException
java.security.acl.Owner
java.security.acl.Permission
java.security.interfaces.DSAKeyPairGenerator
java.security.interfaces.DSAPrivateKey
java.security.interfaces.RSAKey
java.security.interfaces.RSAPrivateCrtKey
java.security.interfaces.RSAPrivateKey
java.security.interfaces.RSAPublicKey
java.security.spec.DSAParameterSpec
java.security.spec.DSAPrivateKeySpec
java.security.spec.DSAPublicKeySpec
java.security.spec.PKCS8EncodedKeySpec
java.security.spec.PSSParameterSpec
java.security.spec.RSAKeyGenParameterSpec
java.security.spec.RSAPrivateCrtKeySpec
java.security.spec.RSAPrivateKeySpec
java.security.spec.RSAPublicKeySpec
java.text.BreakIterator
java.text.CollationElementIterator
java.text.CollationKey
java.text.Collator
java.text.RuleBasedCollator
java.util.EventListener
java.util.EventListenerProxy
java.util.EventObject
java.util.Observable
java.util.Observer
java.util.Timer
java.util.TimerTask
java.util.TooManyListenersException
java.util.jar.JarOutputStream
java.util.zip.Adler32
java.util.zip.CheckedInputStream
java.util.zip.CheckedOutputStream
java.util.zip.Deflater
java.util.zip.DeflaterOutputStream
java.util.zip.GZIPInputStream
java.util.zip.GZIPOutputStream
java.util.zip.ZipOutputStream
javax.microedition.io.HttpConnection
javax.microedition.io.HttpsConnection
javax.microedition.io.SecureConnection
javax.microedition.io.SecurityInfo
javax.microedition.io.ServerSocketConnection
javax.microedition.io.UDPDatagramConnection
javax.microedition.pki.Certificate
javax.microedition.pki.CertificateException
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