JDK8至JDK 11 常用API更新

Posted 2023-02-04 街头小贩

1. Optional
   新增:
   stream()
ifPresentOrElse​(Consumer<? super T> action, Runnable emptyAction)
or​(Supplier<? extends Optional<? extends T>> supplier)
   版本: 9
   orElseThrow()
   版本: 10
   isEmpty()
   版本: 11

2. CompletableFuture
   新增:
   completeOnTimeout​(T value, long timeout, TimeUnit unit)
newIncompleteFuture()
defaultExecutor()
copy()
minimalCompletionStage()
completeAsync​(Supplier<? extends T> supplier, Executor executor)
orTimeout​(long timeout, TimeUnit unit)
delayedExecutor​(long delay, TimeUnit unit, Executor executor)
delayedExecutor​(long delay, TimeUnit unit)
completedStage​(U value)
failedFuture​(Throwable ex)
failedStage​(Throwable ex)
   版本: 9

3. Stream
   新增:
   takeWhile​(Predicate<? super T> predicate)
dropWhile​(Predicate<? super T> predicate)
ofNullable​(T t)
iterate​(T seed, Predicate<? super T> hasNext, UnaryOperator<T> next)
   版本: 9

4. Map
   新增:
   of() 系列方法
entry​(K k, V v)
   版本: 9
   copyOf​(Map<? extends K,​? extends V> map)
   版本: 10

5. List
   新增:
   of() 系列方法
   版本: 9
   copyOf​(Collection<? extends E> coll)
   版本: 10

6. Set
   新增:
   of() 系列方法
   版本: 9
   copyOf​(Collection<? extends E> coll)
   版本: 10

7. LocalDate
   新增:
   datesUntil​(LocalDate endExclusive)
datesUntil​(LocalDate endExclusive, Period step)
toEpochSecond​(LocalTime time, ZoneOffset offset)
   版本: 9

8. Locale
   新增:
   getISOCountries​(Locale.IsoCountryCode type)
   版本: 9

9. String
   新增:
   strip()
stripLeading()
stripTrailing()
isBlank()
lines()
repeat​(int count)
   版本: 11
   chars()
codePoints()
   版本: 9

10. HttpClient
    新增类
    版本: 11

11. InputStream
    新增:
    nullInputStream()
readNBytes​(int len) throws IOException
    版本: 11
    readAllBytes() throws IOException
readNBytes​(byte[] b, int off, int len) throws IOException
transferTo​(OutputStream out) throws IOException
    版本: 9

12. OutputStream
    新增:
    nullOutputStream()
    版本: 11

13. ByteArrayOutputStream
    新增:
    writeBytes​(byte[] b)
    版本: 11
    toString​(Charset charset)
    版本: 10

14. Selector
    新增:
    select​(Consumer<SelectionKey> action, long timeout) throws IOException
select​(Consumer<SelectionKey> action) throws IOException
selectNow​(Consumer<SelectionKey> action) throws IOException
    版本: 11

15. Objects
    新增:
    requireNonNullElse​(T obj, T defaultObj)
requireNonNullElseGet​(T obj, Supplier<? extends T> supplier)
checkIndex​(int index, int length)
checkFromToIndex​(int fromIndex, int toIndex, int length)
checkFromIndexSize​(int fromIndex, int size, int length)
    版本: 9

16. Path
    新增:
    of​(String first, String... more)
of​(URI uri)
    版本: 11

17. Files
    新增:
    readString​(Path path) throws IOException
readString​(Path path, Charset cs) throws IOException
writeString​(Path path, CharSequence csq, OpenOption... options) throws IOException
writeString​(Path path, CharSequence csq, Charset cs, OpenOption... options) throws IOException
    版本: 11

18. Socket
    新增:
    setOption​(SocketOption<T> name, T value) throws IOException
getOption​(SocketOption<T> name) throws IOException
supportedOptions()
    版本: 9

19. HttpURLConnection
    新增:
    setAuthenticator​(Authenticator auth)
    版本: 9

20. URLClassLoader
    新增:
    URLClassLoader​(String name, URL[] urls, ClassLoader parent)
URLClassLoader​(String name, URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory)
    版本: 9