Java 9-11 Update

After years of planning, the module system Jigsaw finally arrived in Java 9. The main focus was on modularizing the Java class library. However, modularization is also an important aspect in the software architecture and has so far mostly been mapped solely through the build system and thus at compile time. Alternatives like OSGi have resulted in a lot of technical effort and have been poorly supported by many tools and frameworks.
Thanks to Jigsaw, Java applications with built-in language resources can now be clearly structured and runtime dependencies can also be defined. Many developers and architects have been waiting a long time for this. However, such fundamental extensions also pose problems. Although the tool manufacturers will not get any support from Jigsaw, there will of course be some initial difficulties, despite the tool support.
Through this seminar, we help you to divide your applications correctly and to clearly differentiate the components. This will minimize potential problems with migrations or new implementations. In addition, we will look at supporting the development environments and build management with Maven and Gradle.
In addition to Jigsaw, other new features will also be addressed. These include, for example, the JShell, the extensions of the process API, factory methods for collections and the creation of UTF-8 resource bundles. The seminar offers a simple introduction to working with Java 9 and provides valuable information and practical tips.



2 days


  • Receive a thorough overview of development using Java 9.
  • Learn how to create modularized software with Java tools.
  • Attend a brief update training course and save valuable working time.
  • Our course documents are always up to date

target group

Java software developers, technical project managers, architects


Modularized JDK

  • The objectives of Project Jigsaw
  • Overview of the system modules
  • Classpath vs. module path
  • Restructuring in the JDK
  • Migration to Java 9 without modularization

Basics of software modularization

  • Public and private interfaces
  • Separating interfaces and implementation
  • Problems with software modularization

Software modularization with Java 9

  • Module descriptors and dependencies for system modules
  • Definition of separate modules and their dependencies
  • Visibilities and exporting public interfaces
  • ServiceLoader in the context of modules
  • Module builds with Maven and Gradle
  • Contrast to OSGi

Other new features in Java 9

  • JShell
  • Process API
  • UTF-8 resource bundles
  • Factory methods for collections


Good basic knowledge of Java, for example, by attending our Java Training.

Seminar duration

1 day, 9:00 to 17:00

Number of participants

min. 1, max. 8 people

OIO Training

OIO Orientation in Objects GmbH, experts for Java and JavaScript in Mannheim, joined the Trivadis group in May 2018. Together we are extending and strengthening our offer for Java and agile software development. These courses have been developed by OIO and will be held by our new colleagues.

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Contact to our service center

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CH+41 (0) 584 595795

AT+43 (0) 133 2353160

FR+41 (0) 584 595454

EN+49 (0) 711 90363245

DA+49 (0) 711 90363245

Mannheim / DE
10.09. - 11.09.2019
DE1 290,00 €
Mannheim / DE
05.12. - 06.12.2019
DE1 290,00 €
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Trivadis, Bernd Rössler, Head of Training

Bernd Rössler

  • Solution Manager Trivadis Training
  • DE: +49 (0) 711 90363245
    CH: +41 (0) 584 595795
    AT: +43 (0) 133 2353160
    FR: +41 (0) 584 595454
    EN: +49 (0) 711 90363245
    DA: +49 (0) 711 90363245


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