RFR: 8298266: "java.home property not set" error in Graal when sun.awt.fontconfig java property is set on Windows [v2]

[Phil Race]

On Fri, 6 Jan 2023 00:49:58 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> If this property is not optional why do we have a null check for it? Can that check be removed as a part of refactoring?

It is much better to have an error thrown which explains the problem rather than a random NPE or similar right afterwards.
This behaviour has been there since at least JDK 1.3 (2000)  when the file was first created as sun/awt/FontProperties.java. It may even have existed in some other location before then, but I can't tell that from SCCS per-file history.

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PR: https://git.openjdk.org/jdk/pull/11559