Java Standard Library¶
Scala Native supports a subset of the JDK core libraries reimplemented in Scala.
Supported classes¶
Here is the list of currently available classes:
java.io.BufferedInputStreamjava.io.BufferedOutputStreamjava.io.BufferedReaderjava.io.BufferedWriterjava.io.ByteArrayInputStreamjava.io.ByteArrayOutputStreamjava.io.Closeablejava.io.DataInputjava.io.DataInputStreamjava.io.DataOutputjava.io.DataOutputStreamjava.io.EOFExceptionjava.io.Filejava.io.FileDescriptorjava.io.FileFilterjava.io.FileInputStreamjava.io.FileNotFoundExceptionjava.io.FileOutputStreamjava.io.FileReaderjava.io.FileWriterjava.io.FilenameFilterjava.io.FilterInputStreamjava.io.FilterOutputStreamjava.io.FilterReaderjava.io.Flushablejava.io.IOExceptionjava.io.InputStreamjava.io.InputStreamReaderjava.io.LineNumberReaderjava.io.NotSerializableExceptionjava.io.ObjectStreamExceptionjava.io.OutputStreamjava.io.OutputStreamWriterjava.io.PrintStreamjava.io.PrintWriterjava.io.PushbackReaderjava.io.RandomAccessFilejava.io.Readerjava.io.Serializablejava.io.StringReaderjava.io.StringWriterjava.io.SyncFailedExceptionjava.io.UTFDataFormatExceptionjava.io.UnsupportedEncodingExceptionjava.io.Writerjava.lang.AbstractMethodErrorjava.lang.AbstractStringBuilderjava.lang.Appendablejava.lang.ArithmeticExceptionjava.lang.ArrayIndexOutOfBoundsExceptionjava.lang.ArrayStoreExceptionjava.lang.AssertionErrorjava.lang.AutoCloseablejava.lang.Booleanjava.lang.BootstrapMethodErrorjava.lang.Bytejava.lang.CharSequencejava.lang.Characterjava.lang.Character$CaseFoldingjava.lang.Character$Subsetjava.lang.Character$UnicodeBlockjava.lang.ClassCastExceptionjava.lang.ClassCircularityErrorjava.lang.ClassFormatErrorjava.lang.ClassLoaderjava.lang.ClassNotFoundExceptionjava.lang.CloneNotSupportedExceptionjava.lang.Cloneablejava.lang.Comparablejava.lang.Doublejava.lang.Enumjava.lang.EnumConstantNotPresentExceptionjava.lang.Errorjava.lang.Exceptionjava.lang.ExceptionInInitializerErrorjava.lang.Floatjava.lang.IllegalAccessErrorjava.lang.IllegalAccessExceptionjava.lang.IllegalArgumentExceptionjava.lang.IllegalMonitorStateExceptionjava.lang.IllegalStateExceptionjava.lang.IllegalThreadStateExceptionjava.lang.IncompatibleClassChangeErrorjava.lang.IndexOutOfBoundsExceptionjava.lang.InheritableThreadLocaljava.lang.InstantiationErrorjava.lang.InstantiationExceptionjava.lang.Integerjava.lang.InternalErrorjava.lang.InterruptedExceptionjava.lang.Iterablejava.lang.LinkageErrorjava.lang.Longjava.lang.Mathjava.lang.NegativeArraySizeExceptionjava.lang.NoClassDefFoundErrorjava.lang.NoSuchFieldErrorjava.lang.NoSuchFieldExceptionjava.lang.NoSuchMethodErrorjava.lang.NoSuchMethodExceptionjava.lang.NullPointerExceptionjava.lang.Numberjava.lang.NumberFormatExceptionjava.lang.OutOfMemoryErrorjava.lang.Readablejava.lang.ReflectiveOperationExceptionjava.lang.RejectedExecutionExceptionjava.lang.Runnablejava.lang.Runtimejava.lang.RuntimeExceptionjava.lang.SecurityExceptionjava.lang.Shortjava.lang.StackOverflowErrorjava.lang.StackTraceElementjava.lang.Stringjava.lang.StringBufferjava.lang.StringBuilderjava.lang.StringIndexOutOfBoundsExceptionjava.lang.Systemjava.lang.Threadjava.lang.Thread$UncaughtExceptionHandlerjava.lang.ThreadDeathjava.lang.ThreadLocaljava.lang.Throwablejava.lang.TypeNotPresentExceptionjava.lang.UnknownErrorjava.lang.UnsatisfiedLinkErrorjava.lang.UnsupportedClassVersionErrorjava.lang.UnsupportedOperationExceptionjava.lang.VerifyErrorjava.lang.VirtualMachineErrorjava.lang.Voidjava.lang._String$CaseInsensitiveComparatorjava.lang.ref.PhantomReferencejava.lang.ref.Referencejava.lang.ref.ReferenceQueuejava.lang.ref.SoftReferencejava.lang.ref.WeakReferencejava.lang.reflect.Arrayjava.math.BigDecimaljava.math.BigDecimal$QuotAndRemjava.math.BigDecimal$StringOpsjava.math.BigIntegerjava.math.BigInteger$QuotAndRemjava.math.BitLeveljava.math.Conversionjava.math.Divisionjava.math.Elementaryjava.math.Logicaljava.math.MathContextjava.math.Multiplicationjava.math.Primalityjava.math.RoundingModejava.net.MalformedURLExceptionjava.net.URIjava.net.URI$Helperjava.net.URIEncoderDecoderjava.net.URISyntaxExceptionjava.nio.Bufferjava.nio.BufferOverflowExceptionjava.nio.BufferUnderflowExceptionjava.nio.ByteBufferjava.nio.ByteOrderjava.nio.CharBufferjava.nio.GenBufferjava.nio.GenHeapBufferjava.nio.GenHeapBuffer$NewHeapBufferjava.nio.HeapByteBufferjava.nio.HeapByteBuffer$NewHeapByteBufferjava.nio.HeapCharBufferjava.nio.HeapCharBuffer$NewHeapCharBufferjava.nio.MappedByteBufferjava.nio.ReadOnlyBufferExceptionjava.nio.StringCharBufferjava.nio.channels.ByteChanneljava.nio.channels.Channeljava.nio.channels.ClosedChannelExceptionjava.nio.channels.FileChanneljava.nio.channels.FileChannel$MapModejava.nio.channels.FileChannelImpljava.nio.channels.FileLockjava.nio.channels.GatheringByteChanneljava.nio.channels.InterruptibleChanneljava.nio.channels.NonReadableChannelExceptionjava.nio.channels.NonWritableChannelExceptionjava.nio.channels.OverlappingFileLockExceptionjava.nio.channels.ReadableByteChanneljava.nio.channels.ScatteringByteChanneljava.nio.channels.SeekableByteChanneljava.nio.channels.WritableByteChanneljava.nio.channels.spi.AbstractInterruptibleChanneljava.nio.charset.CharacterCodingExceptionjava.nio.charset.Charsetjava.nio.charset.CharsetDecoderjava.nio.charset.CharsetEncoderjava.nio.charset.CoderMalfunctionErrorjava.nio.charset.CoderResultjava.nio.charset.CodingErrorActionjava.nio.charset.MalformedInputExceptionjava.nio.charset.StandardCharsetsjava.nio.charset.UnmappableCharacterExceptionjava.nio.charset.UnsupportedCharsetExceptionjava.nio.file.CopyOptionjava.nio.file.DirectoryStreamjava.nio.file.DirectoryStream$Filterjava.nio.file.DirectoryStreamImpljava.nio.file.FileAlreadyExistsExceptionjava.nio.file.FileSystemjava.nio.file.FileSystemExceptionjava.nio.file.FileSystemLoopExceptionjava.nio.file.FileSystemNotFoundExceptionjava.nio.file.FileSystemsjava.nio.file.FileVisitOptionjava.nio.file.FileVisitResultjava.nio.file.FileVisitorjava.nio.file.Filesjava.nio.file.Files$TerminateTraversalExceptionjava.nio.file.LinkOptionjava.nio.file.NoSuchFileExceptionjava.nio.file.NotDirectoryExceptionjava.nio.file.NotLinkExceptionjava.nio.file.OpenOptionjava.nio.file.Pathjava.nio.file.PathMatcherjava.nio.file.PathMatcherImpljava.nio.file.Pathsjava.nio.file.RegexPathMatcherjava.nio.file.SimpleFileVisitorjava.nio.file.StandardCopyOptionjava.nio.file.StandardOpenOptionjava.nio.file.StandardWatchEventKindsjava.nio.file.WatchEventjava.nio.file.WatchEvent$Kindjava.nio.file.WatchEvent$Modifierjava.nio.file.WatchKeyjava.nio.file.WatchServicejava.nio.file.Watchablejava.nio.file.attribute.AclEntryjava.nio.file.attribute.AclFileAttributeViewjava.nio.file.attribute.AttributeViewjava.nio.file.attribute.BasicFileAttributeViewjava.nio.file.attribute.BasicFileAttributesjava.nio.file.attribute.DosFileAttributeViewjava.nio.file.attribute.DosFileAttributesjava.nio.file.attribute.FileAttributejava.nio.file.attribute.FileAttributeViewjava.nio.file.attribute.FileAttributeView$classjava.nio.file.attribute.FileOwnerAttributeViewjava.nio.file.attribute.FileStoreAttributeViewjava.nio.file.attribute.FileTimejava.nio.file.attribute.GroupPrincipaljava.nio.file.attribute.PosixFileAttributeViewjava.nio.file.attribute.PosixFileAttributesjava.nio.file.attribute.PosixFilePermissionjava.nio.file.attribute.PosixFilePermissionsjava.nio.file.attribute.UserDefinedFileAttributeViewjava.nio.file.attribute.UserPrincipaljava.nio.file.attribute.UserPrincipalLookupServicejava.nio.file.spi.FileSystemProviderjava.security.AccessControlExceptionjava.security.Principaljava.time.Instantjava.util.AbstractCollectionjava.util.AbstractListjava.util.AbstractListViewjava.util.AbstractMapjava.util.AbstractMap$SimpleEntryjava.util.AbstractMap$SimpleImmutableEntryjava.util.AbstractQueuejava.util.AbstractRandomAccessListIteratorjava.util.AbstractSequentialListjava.util.AbstractSetjava.util.ArrayListjava.util.Arraysjava.util.Arrays$AsRefjava.util.BackedUpListIteratorjava.util.Collectionjava.util.Collectionsjava.util.Collections$BasicSynchronizedList$1java.util.Collections$CheckedCollectionjava.util.Collections$CheckedListjava.util.Collections$CheckedListIteratorjava.util.Collections$CheckedMapjava.util.Collections$CheckedSetjava.util.Collections$CheckedSortedMapjava.util.Collections$CheckedSortedSetjava.util.Collections$EmptyIteratorjava.util.Collections$EmptyListIteratorjava.util.Collections$ImmutableListjava.util.Collections$ImmutableMapjava.util.Collections$ImmutableSetjava.util.Collections$UnmodifiableCollectionjava.util.Collections$UnmodifiableIteratorjava.util.Collections$UnmodifiableListjava.util.Collections$UnmodifiableListIteratorjava.util.Collections$UnmodifiableMapjava.util.Collections$UnmodifiableSetjava.util.Collections$UnmodifiableSortedMapjava.util.Collections$UnmodifiableSortedSetjava.util.Collections$WrappedCollectionjava.util.Collections$WrappedCollection$classjava.util.Collections$WrappedEqualsjava.util.Collections$WrappedEquals$classjava.util.Collections$WrappedIteratorjava.util.Collections$WrappedIterator$classjava.util.Collections$WrappedListjava.util.Collections$WrappedList$classjava.util.Collections$WrappedListIteratorjava.util.Collections$WrappedListIterator$classjava.util.Collections$WrappedMapjava.util.Collections$WrappedMap$classjava.util.Collections$WrappedSetjava.util.Collections$WrappedSortedMapjava.util.Collections$WrappedSortedMap$classjava.util.Collections$WrappedSortedSetjava.util.Collections$WrappedSortedSet$classjava.util.Comparatorjava.util.Comparator$classjava.util.ConcurrentModificationExceptionjava.util.Datejava.util.Dequejava.util.Dictionaryjava.util.DuplicateFormatFlagsExceptionjava.util.EmptyStackExceptionjava.util.EnumSetjava.util.Enumerationjava.util.FormatFlagsConversionMismatchExceptionjava.util.Formattablejava.util.FormattableFlagsjava.util.Formatterjava.util.FormatterClosedExceptionjava.util.HashMapjava.util.HashMap$AbstractMapViewjava.util.HashMap$AbstractMapView$classjava.util.HashMap$AbstractMapViewIteratorjava.util.HashMap$EntrySetjava.util.HashMap$KeySetjava.util.HashMap$ValuesViewjava.util.HashSetjava.util.Hashtablejava.util.Hashtable$UnboxedEntry$1java.util.IllegalFormatCodePointExceptionjava.util.IllegalFormatConversionExceptionjava.util.IllegalFormatExceptionjava.util.IllegalFormatFlagsExceptionjava.util.IllegalFormatPrecisionExceptionjava.util.IllegalFormatWidthExceptionjava.util.IllformedLocaleExceptionjava.util.InputMismatchExceptionjava.util.InvalidPropertiesFormatExceptionjava.util.Iteratorjava.util.LinkedHashMapjava.util.LinkedHashSetjava.util.LinkedListjava.util.LinkedList$Nodejava.util.Listjava.util.ListIteratorjava.util.Localejava.util.Mapjava.util.Map$Entryjava.util.MissingFormatArgumentExceptionjava.util.MissingFormatWidthExceptionjava.util.MissingResourceExceptionjava.util.NavigableSetjava.util.NavigableViewjava.util.NoSuchElementExceptionjava.util.Objectsjava.util.PriorityQueuejava.util.PriorityQueue$BoxOrderingjava.util.Propertiesjava.util.Queuejava.util.Randomjava.util.RandomAccessjava.util.RandomAccessListIteratorjava.util.ServiceConfigurationErrorjava.util.Setjava.util.SizeChangeEventjava.util.SizeChangeEvent$classjava.util.SortedMapjava.util.SortedSetjava.util.StringTokenizerjava.util.TooManyListenersExceptionjava.util.TreeSetjava.util.TreeSet$BoxOrderingjava.util.UUIDjava.util.UnknownFormatConversionExceptionjava.util.UnknownFormatFlagsExceptionjava.util.concurrent.Callablejava.util.concurrent.CancellationExceptionjava.util.concurrent.ExecutionExceptionjava.util.concurrent.Executorjava.util.concurrent.RejectedExecutionExceptionjava.util.concurrent.TimeUnitjava.util.concurrent.TimeoutExceptionjava.util.concurrent.atomic.AtomicBooleanjava.util.concurrent.atomic.AtomicIntegerjava.util.concurrent.atomic.AtomicLongjava.util.concurrent.atomic.AtomicLongArrayjava.util.concurrent.atomic.AtomicReferencejava.util.concurrent.atomic.AtomicReferenceArrayjava.util.concurrent.locks.AbstractOwnableSynchronizerjava.util.concurrent.locks.AbstractQueuedSynchronizerjava.util.function.BiPredicatejava.util.function.BiPredicate$classjava.util.function.Functionjava.util.function.Function$classjava.util.function.Predicatejava.util.function.Predicate$classjava.util.packagejava.util.package$Boxjava.util.package$CompareNullablesOpsjava.util.regex.MatchResultjava.util.regex.Matcherjava.util.regex.Patternjava.util.regex.PatternSyntaxExceptionjava.util.stream.BaseStreamjava.util.stream.CompositeStreamjava.util.stream.EmptyIteratorjava.util.stream.Streamjava.util.stream.Stream$Builderjava.util.stream.Stream$Builder$classjava.util.stream.WrappedScalaStreamjava.util.stream.WrappedScalaStream$Builderjava.util.zip.Adler32java.util.zip.Checksumjava.util.zip.DataFormatExceptionjava.util.zip.Deflaterjava.util.zip.DeflaterOutputStreamjava.util.zip.Inflaterjava.util.zip.InflaterInputStreamjava.util.zip.ZipException
Note: This is an ongoing effort, some of the classes listed here might be partially implemented. Please consult javalib sources for details.
Regular expressions (java.util.regex)¶
Scala Native implements java.util.regex-compatible API using Google’s RE2 library. There is some differences in terms of the support of the regular expression language.
Some expressions are not supported:
- Character classes:
- Unions:
[a-d[m-p]] - Intersections:
[a-z&&[^aeiou]]
- Unions:
- Predefined character classes:
\h,\H,\v,\V - Java character function classes:
\p{javaLowerCase}\p{javaUpperCase}\p{javaWhitespace}\p{javaMirrored}
- Boundary matchers:
\G,\Z,\R - Possessive quantifiers:
X?+,X*+,X++,X{n}+,X{n,}+,X{n,m}+ - Lookaheads:
(?=X),(?!X),(?<=X),(?<!X),(?>X)
Some expressions have an alternative syntax:
| Java | RE2 |
|---|---|
(?<foo>a) |
(?P<foo>a) |
p{Alnum} |
[[:alpha:]] |
p{Alpha} |
[[:alnum:]] |
p{ASCII} |
[[:ascii:]] |
p{Blank} |
[[:blank:]] |
p{Cntrl} |
[[:cntrl:]] |
p{Digit} |
[[:digit:]] |
p{Graph} |
[[:graph:]] |
p{Lower} |
[[:lower:]] |
p{Print} |
[[:print:]] |
p{Punct} |
[[:punct:]] |
p{Space} |
[[:space:]] |
p{Upper} |
[[:upper:]] |
p{XDigit} |
[[:xdigit:]] |
p{InGreek} |
p{Latin} |
p{IsLatin} |
p{Greek} |
Continue to C Standard Library.
