Java 8, Java 9, and Beyond!

Transcription

1 Java 8, Java 9, and Beyond! Mark Reinhold Insert Presenterʼs Name Here Insert Presenterʼs Title Here Chief Architect, Java Platform Group, Oracle Jfokus 2013 Copyright Copyright 2013, 2013, Oracle Oracle and/or and/or its affiliates. its affiliates. All rights All rights reserved. reserved. Insert Information Protection Policy Classification from Slide 13

2 2

3 Java 8 2

4 Lambda (JSR 335) Java 8 2

5 Lambda (JSR 335) Compact Profiles Java 8 2

6 Lambda (JSR 335) Compact Profiles Java 8 Nashorn 2

7 Lambda (JSR 335) Compact Profiles Java 8 Date/Time API (JSR 310) Nashorn 2

8 Lambda (JSR 335) Compact Profiles Java 8 Date/Time API (JSR 310) Nashorn Type Annotations (JSR 308) 2

9 Bulk Data Operations Unicode 6.2 Lambda (JSR 335) Generalized Target-Type Inference Improve Contended Locking Unicode CLDR Compact Profiles TLS Server Name Indication NSA Suite B Base64 HTTP Client Lambda-Form Representation for Method Handles Remove the Permanent Generation Java 8 Date/Time API (JSR 310) DocTree API Prepare for Modularization Parallel Array Sorting Nashorn Configurable Secure-Random Number Generation Type Annotations (JSR 308) 2

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14 Colors and Shapes 5

15 Colors and Shapes enum Color { RED, GREEN, BLUE } 5

16 Colors and Shapes enum Color { RED, GREEN, BLUE } class Shape { } Shape() {... } Shape(Shape s, double area) {... } Color getcolor() {... } void setcolor(color c) {... } double getarea() {... } 5

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18 List<Shape> shapes =...; 6

19 List<Shape> shapes =...; // Sort shapes by color Comparator<Shape> c = new Comparator<Shape>() { public int compare(shape s, Shape t) { return s.getcolor().compareto(t.getcolor()); } }; Collections.sort(shapes, c); 6

20 // Sort shapes by color Comparator<Shape> c = new Comparator<Shape>() { public int compare(shape s, Shape t) { return s.getcolor().compareto(t.getcolor()); } }; Collections.sort(shapes, c); 7

21 Lambda expressions // Sort shapes by color Comparator<Shape> c = new Comparator<Shape>() { public int compare(shape s, Shape t) { return s.getcolor().compareto(t.getcolor()); } }; Collections.sort(shapes, c); // Sort shapes by color, with a lambda Comparator<Shape> c = (Shape s, Shape t) -> s.getcolor().compareto(t.getcolor()); Collections.sort(shapes, c); 7

22 Lambda expressions // Sort shapes by color, with a lambda Comparator<Shape> c = (Shape s, Shape t) -> s.getcolor().compareto(t.getcolor()); Collections.sort(shapes, c); 8

23 Lambda expressions // Sort shapes by color, with a lambda Comparator<Shape> c = (Shape s, Shape t) -> s.getcolor().compareto(t.getcolor()); Collections.sort(shapes, c); // Sort shapes by color, with a lambda using type inference Comparator<Shape> c = (s, t) -> s.getcolor().compareto(t.getcolor()); Collections.sort(shapes, c); 8

24 Lambda expressions // Sort shapes by color, with a lambda using type inference Comparator<Shape> c = (s, t) -> s.getcolor().compareto(t.getcolor()); Collections.sort(shapes, c); 9

25 Lambda expressions // Sort shapes by color, with a lambda using type inference Comparator<Shape> c = (s, t) -> s.getcolor().compareto(t.getcolor()); Collections.sort(shapes, c); // Sort shapes by color, in one statement Collections.sort(shapes, (s, t) -> s.getcolor().compareto(t.getcolor())); 9

26 Functional interfaces 10

27 Functional interfaces // Compare shapes by color Comparator<Shape> c = (s, t) -> s.getcolor().compareto(t.getcolor()); 10

28 Functional interfaces // Compare shapes by color Comparator<Shape> c = (s, t) -> s.getcolor().compareto(t.getcolor()); // Test whether a shape is red Predicate<Shape> p = s -> s.getcolor() == RED; 10

29 Functional interfaces // Compare shapes by color Comparator<Shape> c = (s, t) -> s.getcolor().compareto(t.getcolor()); // Test whether a shape is red Predicate<Shape> p = s -> s.getcolor() == RED; // Extract the area of a shape Function<Shape,Double> f = s -> s.getarea(); 10

30 Functional interfaces // Compare shapes by color Comparator<Shape> c = (s, t) -> s.getcolor().compareto(t.getcolor()); // Test whether a shape is red Predicate<Shape> p = s -> s.getcolor() == RED; // Extract the area of a shape Function<Shape,Double> f = s -> s.getarea(); // Create a bigger shape from a given shape UnaryOperator<Shape> o = s -> new Shape(s, s.getarea() * 2); 10

31 Iteration 11

32 Iteration // Paint red shapes blue List<Shape> shapes =...; for (Shape s : shapes) { if (s.getcolor() == RED) s.setcolor(blue); } 11

33 Iteration // Paint red shapes blue, using external iteration List<Shape> shapes =...; for (Shape s : shapes) { if (s.getcolor() == RED) s.setcolor(blue); } 11

34 Iteration // Paint red shapes blue, using external iteration List<Shape> shapes =...; for (Shape s : shapes) { if (s.getcolor() == RED) s.setcolor(blue); } // Paint red shapes blue, using internal iteration shapes.foreach(s -> { if (s.getcolor() == RED) s.setcolor(blue); }); 11

35 Default methods 12

36 Default methods interface Iterable<T> { } Iterator<T> iterator(); default void foreach(consumer<? super T> consumer) { for (T t : this) consumer.accept(t); } 12

37 Default methods 13

38 Default methods interface Collection<E> { default boolean removeall(predicate<? super E> filter) { boolean removed = false; Iterator<E> each = iterator(); while (each.hasnext()) { if (filter.test(each.next())) { each.remove(); removed = true; } } return removed; } } 13

39 Default methods 14

40 Default methods interface List<E> {... default void replaceall(unaryoperator<e> op) { final ListIterator<E> li = this.listiterator(); while (li.hasnext()) li.set(op.apply(li.next())); } } 14

41 // Paint red shapes blue, using internal iteration shapes.foreach(s -> { if (s.getcolor() == RED) s.setcolor(blue); }); 15

42 Streams // Paint red shapes blue, using internal iteration shapes.foreach(s -> { if (s.getcolor() == RED) s.setcolor(blue); }); // Paint red shapes blue, using bulk operations on a stream shapes.stream().filter(s -> s.getcolor() == RED).forEach(s -> { s.setcolor(blue); }); 15

43 Streams // Paint red shapes blue, using bulk operations on a stream shapes.stream().filter(s -> s.getcolor() == RED).forEach(s -> { s.setcolor(blue); }); 16

44 Streams // Paint red shapes blue, using bulk operations on a stream shapes.stream().filter(s -> s.getcolor() == RED).forEach(s -> { s.setcolor(blue); }); // Find the first blue shape Shape firstblue = shapes.stream().filter(s -> s.getcolor() == BLUE).findFirst().get(); 16

45 Streams 17

46 Streams // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(s -> s.getarea()).reduce(0.0, (a, b) -> a + b); 17

47 Streams // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(s -> s.getarea()).reduce(0.0, (a, b) -> a + b); // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(s -> s.getarea()).sum(); 17

48 Streams // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(s -> s.getarea()).sum(); 18

49 Streams // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(s -> s.getarea()).sum(); // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(Shape::getArea).sum(); 18

50 Streams // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(Shape::getArea).sum(); 19

51 Streams // Compute the sum of the areas of blue shapes double sumofareas = shapes.stream().filter(s -> s.getcolor() == BLUE).map(Shape::getArea).sum(); // Compute the sum of the areas of blue shapes, in parallel double sumofareas = shapes.parallelstream().filter(s -> s.getcolor() == BLUE).map(Shape::getArea).sum(); 19

52 Project Lambda openjdk.java.net/projects/lambda jdk8.java.net/lambda 20

53 Project Lambda openjdk.java.net/projects/lambda jdk8.java.net/lambda 20

54 Project Lambda openjdk.java.net/projects/lambda jdk8.java.net/lambda 20

55 Bulk Data Operations Unicode 6.2 Lambda (JSR 335) Generalized Target-Type Inference Improve Contended Locking Unicode CLDR Compact Profiles TLS Server Name Indication NSA Suite B Base64 HTTP Client Lambda-Form Representation for Method Handles Remove the Permanent Generation Java 8 Date/Time API (JSR 310) DocTree API Prepare for Modularization Parallel Array Sorting Nashorn Configurable Secure-Random Number Generation Type Annotations (JSR 308) 21

56 Project Jigsaw openjdk.java.net/projects/jigsaw 22

57 Project Jigsaw openjdk.java.net/projects/jigsaw 22

58 Modular platform: Before 23

59 Modular platform: Before 50 nodes 171 edges 23

60 Modular platform: Before 50 nodes 171 edges 24

61 Modular platform: After 32 nodes 105 edges 24

62 cosnaming tools tools.jaxws tools.base crypto scripting sctp instrument management.iiop compat corba tools.jre devtools kerberos management compiler jaxws rowset rmi jta naming auth jaxp jdbc tls logging xmldsig desktop httpserver prefs jx.annotations base

63 cosnaming tools tools.jaxws tools.base crypto scripting sctp instrument management.iiop compat corba tools.jre devtools kerberos management compiler jaxws rowset rmi jta naming auth jaxp jdbc tls logging xmldsig desktop httpserver prefs jx.annotations base 52MB

64 cosnaming tools tools.jaxws tools.base crypto scripting sctp instrument 52MB management.iiop compat corba tools.jre devtools kerberos management compiler jaxws rowset rmi jta naming auth jaxp jdbc tls logging xmldsig desktop httpserver prefs jx.annotations base 10

65 cosnaming tools tools.jaxws tools.base management.iiop compat kerberos crypto rowset rmi jta management compiler corba devtools tools.jre jaxws xmldsig desktop scripting naming auth jaxp jdbc httpserver tls logging sctp prefs jx.annotations instrument base 52MB 17 10

66 cosnaming tools tools.jaxws tools.base sctp instrument crypto scripting compat rowset naming jdbc 52MB management.iiop kerberos tls rmi management compiler auth base 10 jta logging corba jaxp tools.jre xmldsig prefs jaxws desktop devtools httpserver jx.annotations

67 cosnaming tools tools.jaxws tools.base crypto scripting sctp instrument management.iiop compat corba tools.jre devtools kerberos management compiler jaxws rowset rmi jta naming auth jaxp jdbc tls logging xmldsig desktop httpserver prefs jx.annotations base

68 Compact Profiles 26

69 Compact Profiles compact1 java.io java.lang java.math java.net java.nio java.security java.text java.util javax.crypto javax.net javax.security 10MB 26

70 Compact Profiles compact1 java.io java.lang java.math java.net java.nio java.security java.text java.util javax.crypto javax.net javax.security compact2 java.rmi java.sql javax.rmi javax.sql javax.transaction javax.xml org.w3c.dom org.xml.sax 10MB 17 26

71 Compact Profiles compact1 java.io java.lang java.math java.net java.nio java.security java.text java.util javax.crypto javax.net javax.security compact2 java.rmi java.sql javax.rmi javax.sql javax.transaction javax.xml org.w3c.dom org.xml.sax compact3 java.lang.instrument java.lang.management java.util.prefs javax.annotation.processing javax.lang.model javax.management javax.naming javax.script javax.security.acl javax.security.auth.kerberos javax.security.sasl javax.sql.rowset javax.tools javax.xml.crypto org.ietf.jgss 10MB

72 Compact Profiles compact1 java.io java.lang java.math java.net java.nio java.security java.text java.util javax.crypto javax.net javax.security compact2 java.rmi java.sql javax.rmi javax.sql javax.transaction javax.xml org.w3c.dom org.xml.sax compact3 java.lang.instrument java.lang.management java.util.prefs javax.annotation.processing javax.lang.model javax.management javax.naming javax.script javax.security.acl javax.security.auth.kerberos javax.security.sasl javax.sql.rowset javax.tools javax.xml.crypto org.ietf.jgss Full JRE java.applet java.awt java.beans javax.accessibility javax.activation javax.activity javax.annotation javax.imageio javax.jws javax.print javax.rmi javax.rmi.corba javax.sound javax.swing javax.xml.bind javax.xml.soap javax.xml.ws org.omg 10MB

73 Bulk Data Operations Unicode 6.2 Lambda (JSR 335) Generalized Target-Type Inference Improve Contended Locking Unicode CLDR Compact Profiles TLS Server Name Indication NSA Suite B Base64 HTTP Client Lambda-Form Representation for Method Handles Remove the Permanent Generation Java 8 Date/Time API (JSR 310) DocTree API Prepare for Modularization Parallel Array Sorting Nashorn Configurable Secure-Random Number Generation Type Annotations (JSR 308) 27

74 Java 8 28

75 Java 8 28

76 Java 8 openjdk.java.net/projects/jdk8 openjdk.java.net/projects/jdk8/spec jdk8.java.net 28

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81 Java 9 and beyond! 30

82 Unified Type System OpenJFX Self Tuning JVM Java 9 and beyond! Jigsaw Reification Ease of use 30

83 Project Sumatra Java for GPUs OpenJFX Resource Management Generic Lang Interoperability Jigsaw More and More Ports Optimizations Penrose Reification Unified Type System Improved Native Integration Self Tuning JVM Java 9 and beyond! Data Structure Optimizations Ease of use Multi-Tenancy 30

84 JDK Enhancement Proposals (JEPs) openjdk.java.net/jeps 31

85 JDK Enhancement Proposals (JEPs) openjdk.java.net/jeps 31

86 JDK Enhancement Proposals (JEPs) 138 Autoconf-Based Build System 139 Enhance javac to Improve Build Speed 140 Limited doprivileged 141 Increase the Client VM's Default Heap Size 142 Reduce Cache Contention on Specified Fields 143 Improve Contended Locking 144 Reduce GC Latency for Large Heaps 145 Cache Compiled Code 146 Improve Fatal Error Logs 147 Reduce Class Metadata Footprint 148 Small VM 149 Reduce Core-Library Memory Usage 150 Date & Time API 151 Compress Time-Zone Data 152 Crypto Operations with Network HSMs 153 Launch JavaFX Applications 154 Remove Serialization 155 Concurrency Updates 156 G1 GC: Reduce need for full GCs 157 G1 GC: NUMA-Aware Allocation 158 Unified JVM Logging 159 Enhanced Class Redefinition 160 Lambda-Form Representation for Method Handles 161 Compact Profiles 162 Prepare for Modularization 163 Enable NUMA Mode by Default When Appropriate 164 Leverage CPU Instructions for AES Cryptography 165 Compiler Control 166 Overhaul JKS-JCEKS-PKCS12 Keystores 167 Event-Based JVM Tracing 168 Network Discovery of Manageable Java Processes 169 Value Objects 170 JDBC Fence Intrinsics 172 DocLint 173 Retire Some Rarely-Used GC Combinations 174 Nashorn JavaScript Engine 175 Integrate PowerPC/AIX Port into JDK 8 32

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88 The preceding material is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle. 33

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90 34 openjdk.java.net/projects/jdk8 jdk8.java.net

91 Java 8, Java 9, and Beyond! Mark Reinhold Insert Presenterʼs Name Here Insert Presenterʼs Title Here Chief Architect, Java Platform Group, Oracle Jfokus 2013 Insert Information Protection Policy Classification from Slide 13