Sam Brannen
bda69f0ce2
Prior to this commit, the Java 21 and Java 24 multi-release sources in spring-core could not be developed or tested within Eclipse, since an Eclipse project supports only a single Java compliance level. This commit configures Eclipse projects that use the multiReleaseJar plugin with the highest multi-release version as their Java baseline (Java 24 for spring-core) and includes the corresponding multi-release source folders. Types which are overridden by a multi-release source folder are excluded from lower source folders, and higher source folders are placed first so that the debugger's source lookup resolves overriding types. A lower baseline can be configured via the "eclipseJavaBaseline" project property: for example, -PeclipseJavaBaseline=17. See gh-37397
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