Update ReleaseCandidate constraints for Java.

PiperOrigin-RevId: 804400784
Change-Id: I2ec43a913f166dcd633763d76c5763785392b588

Author: maigovannon

pkg/runtime/install.go

@@ -359,6 +359,7 @@ func ResolveVersion(ctx *gcp.Context, runtime InstallableRuntime, verConstraint,
 	// Some release candidates do not follow the convention for semver
 	// Specifically php. example - 8.3.0RC4.
 	if IsReleaseCandidate(verConstraint) || version.IsExactSemver(verConstraint) {
+		ctx.Logf("Using exact version %s for %s", verConstraint, runtimeNames[runtime])
 		return verConstraint, nil
 	}
 

pkg/version/version.go

@@ -121,7 +121,8 @@ func IsExactSemver(constraint string) bool {
 // Example dotnet rc version - 8.0.100-rc.1
 // Example php rc version - 8.3.0RC4
 // Example ruby rc version - 3.2.0-rc1
+// Example java rc version - 25.0.0-beta+36.0.ea
 func IsReleaseCandidate(constraint string) bool {
-	m := regexp.MustCompile(`(\d+)\.(\d+)\.(.*)(rc|RC)(.*)`)
+	m := regexp.MustCompile(`(\d+)\.(\d+)\.(.*)(rc|RC|beta)(.*)`)
 	return m.MatchString(constraint)
 }