Java 13

version: 13 Release date: 2019-09-17 EOL date: 2020-03-17 bytecode: 57.0

Documentation: notes , vm , lang , api SCM: hg

Distro	Vendor	License	Platforms
AdoptOpenJDK	AdoptOpenJDK	GPLv2+CE	aix-ppc64 linux-arm32 linux-arm64 linux-ppc64le linux-s390x linux-x64 macos-x64 windows-x86 windows-x64
Azul Prime	Azul Systems	Commercial	linux-x64
Azul Zulu Builds of OpenJDK 13	Azul Systems	GPLv2+CE	alpine-x64 linux-arm32 linux-arm64 linux-x86 linux-x64 macos-arm64 macos-x64 windows-x86 windows-x64
Liberica	BellSoft	GPLv2+CE	alpine-x64 linux-arm32 linux-arm64 linux-ppc64le linux-x86 linux-x64 macos-x64 solaris-sparcv9 solaris-x64 windows-x86 windows-x64
Oracle JDK 13	Oracle	Commercial	linux-x64 macos-x64 windows-x64
Red Hat build of OpenJDK 13	Red Hat	GPLv2+CE	windows-x64
SapMachine 13	SAP	GPLv2+CE	linux-ppc64 linux-ppc64le linux-x64 macos-x64 windows-x64

Technology Compatibility Kit

New Features

JVM

Dynamic CDS Archives ( JEP 350 )
ZGC: Uncommit Unused Memory ( JEP 351 )

Language

Switch Expressions Preview ( JEP 354 )
Text Blocks Preview ( JEP 355 )

Internal

Reimplement the Legacy Socket API ( JEP 353 )

New APIs

Compare to Java:

base: version: 13 build 13.0.2+8

target: version: 12 build 12.0.2+10

base: version: 13 build 13.0.2+8

target: version: 11 build 11.0.15+10

base: version: 13 build 13.0.2+8

target: version: 10 build 10.0.2

m
java.activation

removed
m
java.base
- p
  java.io
  - c
    ByteArrayInputStream
    - m
      readAllBytes()
      
      added
    - m
      readNBytes(byte[], int, int)
      
      added
    - m
      transferTo(OutputStream)
      
      added
  - c
    ByteArrayOutputStream
    - m
      writeBytes(byte[])
      
      added
  - c
    FileInputStream
    - m
      finalize()
      
      removed
  - c
    FileOutputStream
    - m
      finalize()
      
      removed
  - c
    FileReader
    - m
      FileReader(File, Charset)
      
      added
    - m
      FileReader(String, Charset)
      
      added
  - c
    FileWriter
    - m
      FileWriter(File, Charset)
      
      added
    - m
      FileWriter(File, Charset, boolean)
      
      added
    - m
      FileWriter(String, Charset)
      
      added
    - m
      FileWriter(String, Charset, boolean)
      
      added
  - c
    InputStream
    - m
      nullInputStream()
      
      added
    - m
      readNBytes(int)
      
      added
    - m
      skipNBytes(long)
      
      added
  - c
    OutputStream
    - m
      nullOutputStream()
      
      added
  - c
    Reader
    - m
      nullReader()
      
      added
  - c
    Writer
    - m
      nullWriter()
      
      added
- p
  java.lang.constant
  
  added
- p
  java.lang.invoke
  - c
    ConstantBootstraps
    
    added
  - c
    MethodHandle
    
    implements Constable
    - m
      describeConstable()
      
      added
  - c
    MethodType
    
    implements Constable
    
    implements TypeDescriptor.OfMethod
    - m
      describeConstable()
      
      added
    - m
      descriptorString()
      
      added
  - c
    VarHandle.VarHandleDesc
    
    added
  - c
    VarHandle
    
    implements Constable
    - m
      describeConstable()
      
      added
    - m
      toString()
      
      added
  - i
    TypeDescriptor.OfField
    
    added
  - i
    TypeDescriptor.OfMethod
    
    added
  - i
    TypeDescriptor
    
    added
- p
  java.lang.ref
  - c
    Reference
    - m
      clone()
      
      added
- p
  java.lang.reflect
  - c
    UndeclaredThrowableException
    - m
      getCause()
      
      removed
- p
  java.lang
  - c
    Character.UnicodeBlock
    - f
      ADLAM
      
      added
    - f
      BHAIKSUKI
      
      added
    - f
      CHESS_SYMBOLS
      
      added
    - f
      CJK_UNIFIED_IDEOGRAPHS_EXTENSION_F
      
      added
    - f
      CYRILLIC_EXTENDED_C
      
      added
    - f
      DOGRA
      
      added
    - f
      EGYPTIAN_HIEROGLYPH_FORMAT_CONTROLS
      
      added
    - f
      ELYMAIC
      
      added
    - f
      GEORGIAN_EXTENDED
      
      added
    - f
      GLAGOLITIC_SUPPLEMENT
      
      added
    - f
      GUNJALA_GONDI
      
      added
    - f
      HANIFI_ROHINGYA
      
      added
    - f
      IDEOGRAPHIC_SYMBOLS_AND_PUNCTUATION
      
      added
    - f
      INDIC_SIYAQ_NUMBERS
      
      added
    - f
      KANA_EXTENDED_A
      
      added
    - f
      MAKASAR
      
      added
    - f
      MARCHEN
      
      added
    - f
      MASARAM_GONDI
      
      added
    - f
      MAYAN_NUMERALS
      
      added
    - f
      MEDEFAIDRIN
      
      added
    - f
      MONGOLIAN_SUPPLEMENT
      
      added
    - f
      NANDINAGARI
      
      added
    - f
      NEWA
      
      added
    - f
      NUSHU
      
      added
    - f
      NYIAKENG_PUACHUE_HMONG
      
      added
    - f
      OLD_SOGDIAN
      
      added
    - f
      OSAGE
      
      added
    - f
      OTTOMAN_SIYAQ_NUMBERS
      
      added
    - f
      SMALL_KANA_EXTENSION
      
      added
    - f
      SOGDIAN
      
      added
    - f
      SOYOMBO
      
      added
    - f
      SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A
      
      added
    - f
      SYRIAC_SUPPLEMENT
      
      added
    - f
      TAMIL_SUPPLEMENT
      
      added
    - f
      TANGUT
      
      added
    - f
      TANGUT_COMPONENTS
      
      added
    - f
      WANCHO
      
      added
    - f
      ZANABAZAR_SQUARE
      
      added
  - c
    Character
    - m
      toString(int)
      
      added
  - c
    ClassNotFoundException
    - m
      getCause()
      
      removed
  - c
    Class
    
    implements Constable
    
    implements TypeDescriptor.OfField
    - m
      arrayType()
      
      added
    - m
      componentType()
      
      added
    - m
      describeConstable()
      
      added
    - m
      descriptorString()
      
      added
    - m
      getNestHost()
      
      added
    - m
      getNestMembers()
      
      added
    - m
      isNestmateOf(Class)
      
      added
  - c
    Double
    
    implements Constable
    
    implements ConstantDesc
    - m
      describeConstable()
      
      added
    - m
      resolveConstantDesc(MethodHandles.Lookup)
      
      added
  - c
    Enum.EnumDesc
    
    added
  - c
    Enum
    
    implements Constable
    - m
      describeConstable()
      
      added
  - c
    ExceptionInInitializerError
    - m
      getCause()
      
      removed
  - c
    Float
    
    implements Constable
    
    implements ConstantDesc
    - m
      describeConstable()
      
      added
    - m
      resolveConstantDesc(MethodHandles.Lookup)
      
      added
  - c
    Integer
    
    implements Constable
    
    implements ConstantDesc
    - m
      describeConstable()
      
      added
    - m
      resolveConstantDesc(MethodHandles.Lookup)
      
      added
  - c
    Long
    
    implements Constable
    
    implements ConstantDesc
    - m
      describeConstable()
      
      added
    - m
      resolveConstantDesc(MethodHandles.Lookup)
      
      added
  - c
    Runtime
    - m
      runFinalizersOnExit(boolean)
      
      removed
    - m
      traceInstructions(boolean)
      
      removed
    - m
      traceMethodCalls(boolean)
      
      removed
  - c
    SecurityManager
    - m
      checkAwtEventQueueAccess()
      
      removed
    - m
      checkMemberAccess(Class, int)
      
      removed
    - m
      checkSystemClipboardAccess()
      
      removed
    - m
      checkTopLevelWindow(Object)
      
      removed
  - c
    StringBuffer
    
    implements Comparable
    - m
      compareTo(StringBuffer)
      
      added
  - c
    StringBuilder
    
    implements Comparable
    - m
      compareTo(StringBuilder)
      
      added
  - c
    String
    
    implements Constable
    
    implements ConstantDesc
    - m
      describeConstable()
      
      added
    - m
      formatted(Object...)
      
      added
    - m
      indent(int)
      
      added
    - m
      isBlank()
      
      added
    - m
      lines()
      
      added
    - m
      repeat(int)
      
      added
    - m
      resolveConstantDesc(MethodHandles.Lookup)
      
      added
    - m
      strip()
      
      added
    - m
      stripIndent()
      
      added
    - m
      stripLeading()
      
      added
    - m
      stripTrailing()
      
      added
    - m
      transform(Function)
      
      added
    - m
      translateEscapes()
      
      added
  - c
    System
    - m
      runFinalizersOnExit(boolean)
      
      removed
  - c
    Thread
    - m
      destroy()
      
      removed
    - m
      stop(Throwable)
      
      removed
  - e
    Character.UnicodeScript
    - f
      ADLAM
      
      added
    - f
      BHAIKSUKI
      
      added
    - f
      DOGRA
      
      added
    - f
      ELYMAIC
      
      added
    - f
      GUNJALA_GONDI
      
      added
    - f
      HANIFI_ROHINGYA
      
      added
    - f
      MAKASAR
      
      added
    - f
      MARCHEN
      
      added
    - f
      MASARAM_GONDI
      
      added
    - f
      MEDEFAIDRIN
      
      added
    - f
      NANDINAGARI
      
      added
    - f
      NEWA
      
      added
    - f
      NUSHU
      
      added
    - f
      NYIAKENG_PUACHUE_HMONG
      
      added
    - f
      OLD_SOGDIAN
      
      added
    - f
      OSAGE
      
      added
    - f
      SOGDIAN
      
      added
    - f
      SOYOMBO
      
      added
    - f
      TANGUT
      
      added
    - f
      WANCHO
      
      added
    - f
      ZANABAZAR_SQUARE
      
      added
  - i
    CharSequence
    - m
      compare(CharSequence, CharSequence)
      
      added
- p
  java.net
  - c
    SecureCacheResponse
    - m
      getSSLSession()
      
      added
  - c
    ServerSocket
    - m
      ServerSocket(SocketImpl)
      
      added
- p
  java.nio.channels
  - c
    SelectionKey
    - m
      interestOpsAnd(int)
      
      added
    - m
      interestOpsOr(int)
      
      added
  - c
    Selector
    - m
      select(Consumer)
      
      added
    - m
      select(Consumer, long)
      
      added
    - m
      selectNow(Consumer)
      
      added
- p
  java.nio.file
  - c
    FileSystems
    - m
      newFileSystem(Path)
      
      added
    - m
      newFileSystem(Path, Map)
      
      added
    - m
      newFileSystem(Path, Map, ClassLoader)
      
      added
  - c
    Files
    - m
      mismatch(Path, Path)
      
      added
    - m
      readString(Path)
      
      added
    - m
      readString(Path, Charset)
      
      added
    - m
      writeString(Path, CharSequence, Charset, OpenOption...)
      
      added
    - m
      writeString(Path, CharSequence, OpenOption...)
      
      added
  - i
    Path
    - m
      of(String, String...)
      
      added
    - m
      of(URI)
      
      added
- p
  java.nio
  - c
    Buffer
    - m
      slice(int, int)
      
      added
  - c
    ByteBuffer
    - m
      get(int, byte[])
      
      added
    - m
      get(int, byte[], int, int)
      
      added
    - m
      mismatch(ByteBuffer)
      
      added
    - m
      put(int, byte[])
      
      added
    - m
      put(int, byte[], int, int)
      
      added
    - m
      slice(int, int)
      
      added
  - c
    CharBuffer
    - m
      get(int, char[])
      
      added
    - m
      get(int, char[], int, int)
      
      added
    - m
      mismatch(CharBuffer)
      
      added
    - m
      put(int, char[])
      
      added
    - m
      put(int, char[], int, int)
      
      added
    - m
      slice(int, int)
      
      added
  - c
    DoubleBuffer
    - m
      get(int, double[])
      
      added
    - m
      get(int, double[], int, int)
      
      added
    - m
      mismatch(DoubleBuffer)
      
      added
    - m
      put(int, double[])
      
      added
    - m
      put(int, double[], int, int)
      
      added
    - m
      slice(int, int)
      
      added
  - c
    FloatBuffer
    - m
      get(int, float[])
      
      added
    - m
      get(int, float[], int, int)
      
      added
    - m
      mismatch(FloatBuffer)
      
      added
    - m
      put(int, float[])
      
      added
    - m
      put(int, float[], int, int)
      
      added
    - m
      slice(int, int)
      
      added
  - c
    IntBuffer
    - m
      get(int, int[])
      
      added
    - m
      get(int, int[], int, int)
      
      added
    - m
      mismatch(IntBuffer)
      
      added
    - m
      put(int, int[])
      
      added
    - m
      put(int, int[], int, int)
      
      added
    - m
      slice(int, int)
      
      added
  - c
    LongBuffer
    - m
      get(int, long[])
      
      added
    - m
      get(int, long[], int, int)
      
      added
    - m
      mismatch(LongBuffer)
      
      added
    - m
      put(int, long[])
      
      added
    - m
      put(int, long[], int, int)
      
      added
    - m
      slice(int, int)
      
      added
  - c
    MappedByteBuffer

Java Version Almanac

Java versions:

Java 13

New Features

JVM

Language

Internal

New APIs