Java - JDK9 tool jdeps and jdeprscan to inspect any illegal usage

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The following jdeps command will inspect any illegal usage in My.class and provide alternative way to fix problems.
This tool exists in JDK9.

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$ jdeps -jdkinternals My.class

Static analysis tool detect the usage of deprecated APIs.

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$ jdeprscan -cp My

Java - JFR create a new configuration from existing one

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Creating a new custom(custom.jfc) JFR configuration from the existing profile.jfc

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Nice example how Javascript can have a unit test with fetch call by mocking.

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Signal will be standard in JavaScript?

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LangChain JS example with Llama cpp for embeddings and prompt.