Jdk(java) 7 - 6 기타기능
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This document summarizes new features in JDK 7 including updates to XML stack, JDBC, RowSet, class loading, JVM performance improvements, garbage collection, I/O, graphics APIs, collections, and strict class file checking. It also previews planned features for JDK 8 such as support for modular programming, annotations, collections improvements, lambda expressions, and modularization.
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Jdk(java) 7 - 6 기타기능
- 1. JDK 7 출시 기념 (2011.7)JDK 7 소개 #6 기타 기능 소개김용환knight76.tistory.comKnight76 at gmail.com1
- 2. XML stack 버전 변경JAXP 1.4http://jaxp.java.net/1.4/ReleaseNotes.htmlJAXB 2.2ahttp://jaxb.java.net/nonav/2.2/docs/JAX-WS 2.2http://jax-ws.java.net/nonav/2.2/docs/ReleaseNotes.htmlhttp://jcp.org/en/jsr/detail?id=224
- 3. JDBC 4.1 업그레이드Derby가 DataSource에 추가Autoloading of JDBC driversSQLExceptions구체화많은 WrappersStatement eventsPooledConnection에 addStatementEventListener / removeStatementEventListener추가Streaming APIsInputStream과java.io.Reader에 set/update 추가New methodstry with resourcetry (Statement sampleStmt = sampleCon.createStatement())
- 4. RowSet 1.1RowSetFactory, RowSetProviderConnection과 Statement 없이 rowset을 쉽게 가져올 수 있음개발자는 Connection, Statement에 대한 close 할 필요가 없음public void rowsetTest(String userName, String password) throws SQLException {RowSetFactoryexampleRowSetFactory = null;JdbcRowSetrowSet= null;exampleRowSetFactory= RowSetProvider.newFactory();//com.sun.rowset.RowSetFactoryImplrowSet= exampleRowSetFactory.createJdbcRowSet();rowSet.setUrl("jdbc:sampleDriver:sampleAttribute");rowSet.setUsername(userName);rowSet.setPassword(password);rowSet.setCommand("select id, name, addrfrom student");rowSet.execute();}
- 5. Class-loaderClassLoader API 수정 / non-hierarchical class-loader 상태에서 데드락을 피할 수 있게 함http://download.oracle.com/javase/7/docs/technotes/guides/net/ClassLoader.htmlhttp://download.oracle.com/javase/7/docs/technotes/guides/lang/cl-mt.htmlClassLoaderObject getClassLoadingLock(String className)void registerAsParallelCapable()URLClassLoaderInputStreamgetResourceAsStream(String name)void close()
- 6. JVM Performance 향상JDK6 후반 버전부터 이미 적용http://download.oracle.com/javase/7/docs/technotes/guides/vm/performance-enhancements-7.html옵션-server -XX:+TieredCompilation.-XX:+UseCompressedOops-XX:+UseNUMA-XX:+DoEscapeAnalysis
- 7. GCG1CMS을 대체하기 위한 알고리즘JDK6 후반부터 나옴http://download.oracle.com/javase/7/docs/technotes/guides/vm/G1.html
- 8. IONETTLS 1.2SCTP (Stream Control Transmission Protocol)http://openjdk.java.net/projects/sctp/javadoc/b10/index.htmlSDP (Sockets Direct Protocol)access to high performance network connectionshttp://download.oracle.com/javase/tutorial/sdp/sockets/overview.html
- 9. Client (Graphics)Create new platform APIs for 6u10 graphics features Nimbus look-and-feel for Swing Swing JLayer component
- 10. Collections 추가IntefaceTransferQueue<E>extends BlockingQueue<E>message passing applications에 적합 (consumer/producer)
- 11. Collections 추가Class LinkedTransferQueue<E>extends TransferQueue<E>
- 13. Strict class-file checkingJdk7 이후부터는 class 파일들은 모두 typechecking verifier로 verified 해야 함JSR 202 §4.11.1 (http://jcp.org/en/jsr/detail?id=202)4.11 Verification of class FilesJVM 스펙에서는4.10http://jcp.org/aboutJava/communityprocess/maintenance/jsr924/JVMSpec-JavaSE7-ChangeLog.htmlCompliance with JSR 202 (Java Class File Specification Update
- 14. JDK8 이후Language and VM support for modular programmingAnnotations on Java typesLanguage support for collectionsProject LambdaModularization (Project Jigsaw)Swing application frameworkSwing JDatePicker component
- 15. Java Platform Standard Edition 7 Documentationhttp://download.oracle.com/javase/7/docs/
- 16. End of Document