Java 8, Java 9, and Beyond! - jfokus.se · base tls logging auth jdbc jta rmi naming jaxp rowset...

Insert Presenterʼs Name HereInsert Presenterʼs Title Here

Java 8, Java 9, and Beyond!

Mark Reinhold (@mreinhold)Chief Architect, Java Platform Group, Oracle

Jfokus 2013

Java 8

Lambda (JSR 335)

Java 8

Lambda (JSR 335)

Compact ProfilesJava 8

Lambda (JSR 335)

Nashorn

Lambda (JSR 335)Date/Time API (JSR 310)

Nashorn

Type Annotations (JSR 308)

Nashorn

Compact Profiles

Lambda-Form Representation for Method Handles

Remove the Permanent Generation

Improve Contended LockingGeneralized Target-Type Inference

DocTree API

Parallel Array Sorting

Bulk Data Operations Unicode 6.2Base64 HTTP ClientNSA Suite B

Prepare for Modularization

Unicode CLDR

TLS Server Name IndicationConfigurable Secure-Random Number Generation

Java 8Nashorn

Colors and Shapes

enum Color { RED, GREEN, BLUE }

Colors and Shapes

enum Color { RED, GREEN, BLUE }

class Shape {

Shape() { ... } Shape(Shape s, double area) { ... }

Color getColor() { ... } void setColor(Color c) { ... }

double getArea() { ... }

List<Shape> shapes = ...;

// Sort shapes by colorComparator<Shape> c = new Comparator<Shape>() { public int compare(Shape s, Shape t) { return s.getColor().compareTo(t.getColor()); }};Collections.sort(shapes, c);

List<Shape> shapes = ...;

// Sort shapes by color, with a lambdaComparator<Shape> c = (Shape s, Shape t) -> s.getColor().compareTo(t.getColor());Collections.sort(shapes, c);

Lambda expressions

// Sort shapes by color, with a lambda using type inferenceComparator<Shape> c = (s, t) -> s.getColor().compareTo(t.getColor());Collections.sort(shapes, c);

Lambda expressions

// Sort shapes by color, in one statementCollections.sort(shapes, (s, t) -> s.getColor().compareTo(t.getColor()));

Functional interfaces

// Compare shapes by colorComparator<Shape> c = (s, t) -> s.getColor().compareTo(t.getColor());

// Test whether a shape is redPredicate<Shape> p = s -> s.getColor() == RED;

// Extract the area of a shapeFunction<Shape,Double> f = s -> s.getArea();

// Create a bigger shape from a given shapeUnaryOperator<Shape> o = s -> new Shape(s, s.getArea() * 2);

Iteration

// Paint red shapes blueList<Shape> shapes = ...;for (Shape s : shapes) { if (s.getColor() == RED) s.setColor(BLUE);}

Iteration

, using external iteration

Iteration

// Paint red shapes blue, using internal iterationshapes.forEach(s -> { if (s.getColor() == RED) s.setColor(BLUE); });

, using external iteration

Default methods

interface Iterable<T> {

Iterator<T> iterator();

default void forEach(Consumer<? super T> consumer) { for (T t : this) consumer.accept(t); }

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; }}

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())); }}

Streams

// Paint red shapes blue, using bulk operations on a streamshapes.stream() .filter(s -> s.getColor() == RED) .forEach(s -> { s.setColor(BLUE); });

Streams

// Find the first blue shapeShape firstBlue = shapes.stream() .filter(s -> s.getColor() == BLUE) .findFirst().get();

Streams

// Compute the sum of the areas of blue shapesdouble sumOfAreas = shapes.stream() .filter(s -> s.getColor() == BLUE) .map(s -> s.getArea()) .reduce(0.0, (a, b) -> a + b);

Streams

// Compute the sum of the areas of blue shapesdouble 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 shapesdouble sumOfAreas = shapes.stream() .filter(s -> s.getColor() == BLUE) .map(s -> s.getArea()) .sum();

Streams

// Compute the sum of the areas of blue shapesdouble sumOfAreas = shapes.stream() .filter(s -> s.getColor() == BLUE) .map(Shape::getArea) .sum();

Streams

// Compute the sum of the areas of blue shapes, in paralleldouble sumOfAreas = shapes.parallelStream() .filter(s -> s.getColor() == BLUE) .map(Shape::getArea) .sum();

openjdk.java.net/projects/lambdajdk8.java.net/lambda

Project Lambda

Compact Profiles

DocTree API

Unicode CLDR

Java 8Nashorn

Project Jigsawopenjdk.java.net/projects/jigsaw

http://www.flickr.com/photos/lizadaly/2944362379

Modular platform: Before

50 nodes171 edges

Modular platform: Before

Modular platform:

Before 50 nodes171 edges

Modular platform:

After 32 nodes105 edges

tls loggingauthjdbc

jtarmi

jaxpnaming

rowset

kerberos management

compiler

xmldsig

prefssctp

instrument

scripting

crypto

compat

management.iiop

cosnaming

desktop

tools.jre

jx.annotations

httpserver

tools.jaxws tools.base

devtools

tls loggingauthjdbc

jtarmi

jaxpnaming

rowset

kerberos management

compiler

xmldsig

prefssctp

instrument

scripting

crypto

compat

management.iiop

cosnaming

desktop

tools.jre

jx.annotations

httpserver

devtools

tls loggingauthjdbc

jtarmi

jaxpnaming

rowset

kerberos management

compiler

xmldsig

prefssctp

instrument

scripting

crypto

compat

management.iiop

cosnaming

desktop

tools.jre

jx.annotations

httpserver

devtools

1052MB

tls loggingauthjdbc

jtarmi

jaxpnaming

rowset

kerberos management

compiler

xmldsig

prefssctp

instrument

scripting

crypto

compat

management.iiop

cosnaming

desktop

tools.jre

jx.annotations

httpserver

devtools

1052MB 17

tls loggingauthjdbc

jtarmi

jaxpnaming

rowset

kerberos management

compiler

xmldsig

prefssctp

instrument

scripting

crypto

compat

management.iiop

cosnaming

desktop

tools.jre

jx.annotations

httpserver

devtools

1052MB 1724

tls loggingauthjdbc

jtarmi

jaxpnaming

rowset

kerberos management

compiler

xmldsig

prefssctp

instrument

scripting

crypto

compat

management.iiop

cosnaming

desktop

tools.jre

jx.annotations

httpserver

devtools

Compact Profiles

compact1java.iojava.langjava.mathjava.netjava.niojava.securityjava.textjava.utiljavax.cryptojavax.netjavax.security

Compact Profiles

compact2java.rmijava.sqljavax.rmijavax.sqljavax.transactionjavax.xmlorg.w3c.domorg.xml.sax

10MB 17

Compact Profiles

compact3java.lang.instrumentjava.lang.managementjava.util.prefsjavax.annotation.processingjavax.lang.modeljavax.managementjavax.namingjavax.scriptjavax.security.acljavax.security.auth.kerberosjavax.security.sasljavax.sql.rowsetjavax.toolsjavax.xml.cryptoorg.ietf.jgss

10MB 17 24

Compact Profiles

compact3java.lang.instrumentjava.lang.managementjava.util.prefsjavax.annotation.processingjavax.lang.modeljavax.managementjavax.namingjavax.scriptjavax.security.acljavax.security.auth.kerberosjavax.security.sasljavax.sql.rowsetjavax.toolsjavax.xml.cryptoorg.ietf.jgss

Full JREjava.appletjava.awtjava.beansjavax.accessibilityjavax.activationjavax.activityjavax.annotationjavax.imageiojavax.jwsjavax.printjavax.rmijavax.rmi.CORBAjavax.soundjavax.swingjavax.xml.bindjavax.xml.soapjavax.xml.wsorg.omg

10MB 17 24 52

Compact Profiles

DocTree API

Unicode CLDR

Java 8Nashorn

Java 8

openjdk.java.net/projects/jdk8openjdk.java.net/projects/jdk8/specjdk8.java.net

Java 8

Java 9 … and beyond!

Jigsaw

ReificationEase of use

OpenJFX Self Tuning JVM

Unified Type System

Jigsaw

ReificationEase of use

Optimizations

Generic Lang Interoperability

Penrose

OpenJFXProject Sumatra – Java for GPUs

More and More Ports

Multi-Tenancy

Self Tuning JVMImproved Native Integration

Resource Management

Unified Type System

Data Structure Optimizations

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

JDK Enhancement Proposals (JEPs)138 Autoconf-Based Build System139 Enhance javac to Improve Build Speed140 Limited doPrivileged141 Increase the Client VM's Default Heap Size142 Reduce Cache Contention on Specified Fields143 Improve Contended Locking144 Reduce GC Latency for Large Heaps145 Cache Compiled Code146 Improve Fatal Error Logs147 Reduce Class Metadata Footprint148 Small VM149 Reduce Core-Library Memory Usage150 Date & Time API151 Compress Time-Zone Data152 Crypto Operations with Network HSMs153 Launch JavaFX Applications154 Remove Serialization155 Concurrency Updates156 G1 GC: Reduce need for full GCs

157 G1 GC: NUMA-Aware Allocation158 Unified JVM Logging159 Enhanced Class Redefinition160 Lambda-Form Representation for Method Handles161 Compact Profiles162 Prepare for Modularization163 Enable NUMA Mode by Default When Appropriate164 Leverage CPU Instructions for AES Cryptography 165 Compiler Control166 Overhaul JKS-JCEKS-PKCS12 Keystores167 Event-Based JVM Tracing168 Network Discovery of Manageable Java Processes169 Value Objects170 JDBC 4.2171 Fence Intrinsics172 DocLint173 Retire Some Rarely-Used GC Combinations174 Nashorn JavaScript Engine175 Integrate PowerPC/AIX Port into JDK 8

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.

openjdk.java.net/projects/jdk8jdk8.java.net

Insert Presenterʼs Name HereInsert Presenterʼs Title Here

Java 8, Java 9, and Beyond!

Mark Reinhold (@mreinhold)Chief Architect, Java Platform Group, Oracle

Jfokus 2013

Java 8, Java 9, and Beyond! - jfokus.se · base tls logging auth jdbc jta rmi naming jaxp rowset...

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