https://kwonnam.pe.kr/wiki/ 2026-05-05T06:46:50+00:00 https://kwonnam.pe.kr/wiki/ https://kwonnam.pe.kr/wiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2020-11-09T11:47:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/completable_future?rev=1604890042&do=diff Java 8 CompletableFuture * CompletableFuture (Java Platform SE 8 ) * spotify/completable-futures: Utilities for working with futures in Java 8 Thread Pool (Executor) * supplyAsync 등의 메소드 호출시 쓰레드 풀을 명시하지 않으면 Java ForkJoinPool의 commonPool() 이 사용된다. * 개발자가 쓰레드 풀을 제어할 수 없다는 것은 나중에 문제가 될 수 있다. text/html 2015-09-25T21:54:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/cyclops?rev=1443187457&do=diff Cyclops * <https://github.com/aol/cyclops> text/html 2022-05-11T16:47:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/datetime?rev=1652255239&do=diff Java 8 Date & Time * Java DateFormat * Java SE 8 Date and Time * Java 8 – Convert Date to LocalDate and LocalDateTime * DateTimeFormatter#ISO_LOCAL_DATE_TIME : LocalDateTime ISO 8601 표준 포맷터 2011-12-03T10:15:30 * DateTimeFormatter#ISO_OFFSET_DATE_TIME : Offset DateTime ISO 8601 표준 포맷터 2011-12-03T10:15:30+01:00 java.util.Date <-> LocalDate/LocalDateTime/Instant간 변환 * datetime - Convert java.util.Date to java.time.LocalDate /** * Calls {@link #asLocalDate(Date, ZoneId)} with the s… text/html 2017-03-08T09:27:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/lambda?rev=1488934650&do=diff Java 8 Lambda * jool * How and Why to Serialize Lambdas * Java 8 Lambda Expression for Design Patterns – Command Design Pattern * Java 8 Lambda Tutorial * <http://refactoring.info/tools/LambdaFicator/LambdaFicator> 기존 코드를 Java 8 Lambda로 리팩토링하게 도와주는 툴 text/html 2016-09-24T14:42:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/migration?rev=1474697523&do=diff Java 7 to 8 Migration * Compatibility Guide for JDK 8 주의 사항 * cglib 3.2 버전 이상을 사용해야함. * asm 5.x 버전 이상. * Spring Framework 는 3.x 버전의 경우 3.2.15 이상등의 가장 최근 버전을 사용해야 함. Spring이 의존하는 asm 라이브러리 버전 때문. text/html 2021-11-01T13:06:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/optional?rev=1635739616&do=diff Java Optional * Tired of Null Pointer Exceptions? Consider Using Java SE 8's Optional! * Optional Anti-Patterns * Optional by Stuart Marks * Understanding the Optional Monad in Java 8 – Coding With Clarity * Optional - The Mother of All Bikesheds by Stuart Marks - YouTube * Java Optional 바르게 쓰기 - 뒤태지존의 끄적거림 text/html 2016-05-18T18:50:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/pitfall?rev=1463566847&do=diff Java 8 Pitfall localhost hostname 오류 * InetAddress.getLocalhost() does not give same result in java7 and java8 * /etc/hosts에 127.0.0.1 localhost 존재시 올바른 hostname이 아닌 무조건 localhost 리턴 * [JRA-39070] JIRA from address in outbound email changed to 'localhost' if you use Java 8 - Atlassian JIRA * If /etc/hosts is 127.0.0.1 localhost localhost.localdomain centos57, then Java8 returns text/html 2022-04-09T00:10:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://kwonnam.pe.kr/wiki/java/8/stream?rev=1649430619&do=diff Java 8 Stream * Java performance tutorial – How fast are the Java 8 streams? * Java SE 8 new features tour: Processing Collections with Streams API * Stream Performance * Java 8 Stream API Stream for Iterable * Convert Iterable to Stream using Java 8 JDK StreamSupport.stream(iterable.spliterator(), false) .filter(...) .moreStreamOps(...); List<List<Object>> 같은 컬렉션의 컬렉션 Flatten * java - Turn a List of Lists into a List Using Lambdas - Stack Overflow …