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Soft-Shake 2016 : Jigsaw est prêt à tuer le classpath
The document discusses the transition from the traditional Java classpath to the modular system introduced by Project Jigsaw, highlighting its implications for class loading and dependency management. It addresses the complexities of classloaders and modularization in Java, particularly with JDK versions 9 and beyond. Additionally, various tools, demonstrations, and resources related to this new modular approach are provided, encouraging further exploration and adaptation within Java development practices.
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Soft-Shake 2016 : Jigsaw est prêt à tuer le classpath
- 1. Alexis Hassler Jigsaw est prêtà tuer le classpath octobre 2016
- 2. "Classpath is dead!" MarkReinhold JavaOne 2009
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- 6. String hello ="Salut à vous tous les zazous"; Chercher les classes CLASSPATH Hello var = new Hello();
- 7. -classpath java -cp hello-lib.jarHelloWorld
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- 10. java.lang.ClassLoader loadClass(String name) :Class<?> getResource(String name) : URL getResourceAsStream(String name) : InputStream getParent() : ClassLoader
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- 15. Délégation java -cp hello-lib.jar... System ClassLoader
- 16. BootstrapClassLoader bootclasspath java -Xbootclasspath/p:hello-lib.jar ... java-Xbootclasspath:hello-rt.jar ... java -Xbootclasspath/a:hello-lib.jar ...
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- 18. Démonstration BootstrapClassLoader java -cp example.jarfr.sewatech.classpath.Count System ClassLoader java.lang.Integer example.jar java.lang.Integer
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- 21. URLClassloader System ClassLoader Bootstrap ClassLoader URLClassLoader URL ClassLoader URL ClassLoader Parent first Parent first Parent first
- 22. FLTM Classloader Fait LeToi-Même
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- 38. Bundle-Name = SimpleBundle Bundle-SymbolicName = simple-bundle Bundle-Description = Simple Bundle Bundle-Version = 1.0.1 Export-Package = fr.sewatech.mystuff.services Import-Package = org.osgi.framework;version=1.3 OSGi Bundle
- 39. OSGi OS + Hardware JavaRuntime Module Life Cycle Services
- 40. JBoss Modules Sous-projet de Inspiréde Jigsaw (version 2010) Base de JBoss OSGi
- 41. JBoss Modules java -jarjboss-modules.jar -mp path/to/modules my.main.module.name WildFly / JBoss EAP Java SE
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- 43. JBoss Modules module.xml resource resource resource dependency slot dependencyslot dependency slot name slot
- 44. Jigsaw Projet OpenJDK Intégré auJDK 7 (2008) 9 (2016) 8 (2012) (2017)
- 45. Jigsaw Modularité du JDK Corbapour Hello World ? Swing pour Tomcat ?
- 46. Jigsaw Modularité des applications module-info.java modulemessage.service { requires java.xml.bind; requires message.common; exports fr.sewatech.message; }
- 47. Jigsaw Compilation javac --module-path modules -d target/classes/ $(find src/main/java/ -name "*.java")
- 48. Jigsaw Exécution java --module-path jigsaw-modules -m misc.examples/fr.sewatech.example.Main
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- 51. Classpath mode java -classpathlib/* fr.sewatech.example.Main
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- 55. Dependencies module message.service { requiresmessage.printer; requires slf4j.api; } module message.printer { requires transitive message.common; } message.service message.printer message.common
- 56. module message.service { requiresmessage.printer; requires slf4j.api; } Dependencies Automatic modules message.service slf4j.api slf4j-api-1.5.2.
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- 58. Dependencies module message.service @1.0 { requires message.printer @ 1.0; requires slf4j.api @ 1.7; } Module version
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- 61. Exports Java accessibility public forother modules module message.service { exports fr.sewatech.message; }
- 62. Exports Java accessibility public forsome modules module java.base { exports sun.reflect to java.logging, java.sql, jdk.scripting.nashorn; }
- 63. Exports module message.service { exportsprivate java.security; } field.setAccessible(true); // => java.lang.reflect.InaccessibleObjectException Refection
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- 66. BootClassLoader bootclasspath java -Xbootclasspath/p:hello-lib.jar ... java-Xbootclasspath:hello-rt.jar ... java -Xbootclasspath/a:hello-lib.jar ...
- 67. Patch Compile Run javac -Xmodule:java.base -d../patch-classes src/java/lang/Integer.java java --patch-module java.base=patch.jar --module-path jigsaw-modules -m misc.examples
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- 70. Aller plus hawavec Jigsaw Service Providers / Loaders Versioning / Layers Custom JRE : jlink Migration : jdeps ...
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- 72. Planning Java SE 9 27juillet 2017
- 73. Planning Outils ? Maven, Gradle, IDE Livrairies ? Runtimes ? JavaEE, Tomcat,... Hadoop,...
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- 75. Apprendre + JavaOne http://openjdk.java.net/projects/jigsaw/talks/ Quick-Start Guide http://openjdk.java.net/projects/jigsaw/quick-start TheState of the Module System http://openjdk.java.net/projects/jigsaw/spec/sotms/
- 76. module-path is born classpathis NOT dead Conclusion
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