[GR-54784] Bump maximum Java compliance level.

PullRequest: mx/1809

src/mx/_impl/mx.py

@@ -18173,7 +18173,7 @@ def alarm_handler(signum, frame):
 _CACHE_DIR = get_env('MX_CACHE_DIR', join(dot_mx_dir(), 'cache'))
 
 # The version must be updated for every PR (checked in CI) and the comment should reflect the PR's issue
-version = VersionSpec("7.26.0")  # GR-54502
+version = VersionSpec("7.26.1")  # GR-54784
 
 _mx_start_datetime = datetime.utcnow()
 

src/mx/_impl/mx_ide_intellij.py

@@ -60,7 +60,7 @@ class IntellijConfig:
     external_projects: bool = True
     java_modules: bool = True
     native_projects: bool = False
-    max_java_compliance: int = 21
+    max_java_compliance: int = 99
     import_inner_classes: bool = False
     on_save_actions: bool = False
     refresh_only: bool = False
@@ -323,7 +323,8 @@ def _intellij_exclude_if_exists(xml, p, name, output=False):
     def _complianceToIntellijLanguageLevel(compliance):
         # they changed the name format starting with JDK_10
         if compliance.value >= 10:
-            # latest Idea 2021.2 requires the acceptance of a legal notice for beta Java specification to enable support for JDK17. Clamp at JDK16 by default
+            if config.max_java_compliance < compliance.value:
+                mx.warn(f"Requested Java compliance {compliance.value} is higher than maximum ({config.max_java_compliance}). Consider passing '--max-java-compliance'.")
             return 'JDK_' + str(min(compliance.value, config.max_java_compliance))
         return 'JDK_1_' + str(compliance.value)