Java certificate issues recipe + basic java demo

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Java certificate issues recipe + basic java demo

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Last edited Feb 10, 2023

Created on Feb 10, 2023

This example demonstrates a basic Java 11 HTTP client that retrieves dataset metadata from the data.gouv.fr API, parsing the JSON response to extract and print the URLs of all resources. The code uses `java.net.http.HttpClient`, `HttpRequest`, and `HttpResponse` for the asynchronous request, alongside the `org.json` library for JSON parsing. The accompanying recipe addresses a "PKIX path building failed" error by downloading the site’s certificate via `InstallCert.java` and importing it into the JDK 19 keystore using `keytool`, which is necessary for the HTTPS connection to succeed.

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