Modules & SPI

Learn

Existing chapters for this concept.

• Modules & SPI

  Modules

  Define interface in one module, implementations in others, discover at runtime: See for a working example.

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See it in code

Existing Java examples.

• Encoder

  Modules · pkg15modules/spi-demo/src/main/java/pkg15modules/spi/Encoder.java · pkg15modules · Encoder.java

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• Reverse Encoder

  Modules · pkg15modules/spi-demo/src/main/java/pkg15modules/spi/ReverseEncoder.java · pkg15modules · ReverseEncoder.java

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• Upper Encoder

  Modules · pkg15modules/spi-demo/src/main/java/pkg15modules/spi/UpperEncoder.java · pkg15modules · UpperEncoder.java

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• Spi Demo Main

  Modules · pkg15modules/spi-demo/src/main/java/pkg15modules/SpiDemoMain.java · pkg15modules · SpiDemoMain.java

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• modules1JpmsConcepts

  Modules · pkg15modules/modules1JpmsConcepts.java · pkg15modules · modules1JpmsConcepts.java

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Reference

• Java Modules & SPI (pkg15modules)

  Reference

  Introduced in Java 9. Strong encapsulation: only packages are accessible to other modules.

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Prepare

Existing interview questions.

• Java 9–21 Features — Interview Questions (95+)

  Java 9–21 Features — Interview Questions (95+)

  infers raw-ish; specify generic.

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