Check with open-java-format 21.0.1

.open-java-format-version names 21.0.1, which
openjavaformat/open-java-format released on 2026-11-01, so the tests
run the action and the pre-commit hook with it. Made by the
"Follow open-java-format releases" workflow:
https://github.com/openjavaformat/open-java-format-action/actions/runs/41343240257

Author: github-actions[bot]

.open-java-format-version

@@ -1 +1 @@
-2.98.0.6
+21.0.1

README.md

@@ -9,7 +9,7 @@ No Java, Maven, or Gradle required — downloads a native binary from Maven Cent
 The version of open-java-format to check with goes in `.open-java-format-version` at the repository root, one of the versions on [Maven Central](https://repo1.maven.org/maven2/dev/openjavaformat/open-java-format-native/):
 
 ```
-2.98.0.6
+21.0.1
 ```
 
 The action and the [pre-commit hook](#git-pre-commit-hook) both read that file, so the two cannot drift apart; without it, both stop and ask for it. The action itself needs no inputs:
@@ -47,7 +47,7 @@ Files are checked in the open-java-format style, the formatter's only style. Whe
 ```bash
 open-java-format --replace <files>
 # or, with Java 21 or later
-java -jar open-java-format-2.98.0.6-all.jar --replace <files>
+java -jar open-java-format-21.0.1-all.jar --replace <files>
 ```
 
 ## Excluding files

action.yml

@@ -27,12 +27,12 @@ runs:
         # the file the pre-commit hook reads too, so that the two cannot drift apart.
         FILE=".open-java-format-version"
         if [ ! -f "$FILE" ]; then
-          echo "::error::No $FILE in the repository root. Put the open-java-format version to check with in it, one of the releases at https://github.com/openjavaformat/open-java-format/releases, for example: echo 2.98.0.6 > $FILE"
+          echo "::error::No $FILE in the repository root. Put the open-java-format version to check with in it, one of the releases at https://github.com/openjavaformat/open-java-format/releases, for example: echo 21.0.1 > $FILE"
           exit 1
         fi
         VERSION=$(head -n1 "$FILE" | tr -d '[:space:]')
         if ! [[ "$VERSION" =~ ^[0-9]+(\.[0-9]+)+$ ]]; then
-          echo "::error file=$FILE,line=1::$FILE holds '$VERSION', not an open-java-format version such as 2.98.0.6."
+          echo "::error file=$FILE,line=1::$FILE holds '$VERSION', not an open-java-format version such as 21.0.1."
           exit 1
         fi
         echo "Checking with open-java-format $VERSION, from $FILE."

pre-commit

@@ -8,12 +8,12 @@ if [ ! -f "$VERSION_FILE" ]; then
     echo "ERROR: No $VERSION_FILE in the repository root."
     echo "       Put the open-java-format version to check with in it, one of the releases at"
     echo "       https://github.com/openjavaformat/open-java-format/releases, for example:"
-    echo "         echo 2.98.0.6 > $VERSION_FILE"
+    echo "         echo 21.0.1 > $VERSION_FILE"
     exit 1
 fi
 FORMATTER_VERSION=$(head -n1 "$VERSION_FILE" | tr -d '[:space:]')
 if ! [[ "$FORMATTER_VERSION" =~ ^[0-9]+(\.[0-9]+)+$ ]]; then
-    echo "ERROR: $VERSION_FILE holds '$FORMATTER_VERSION', not an open-java-format version such as 2.98.0.6."
+    echo "ERROR: $VERSION_FILE holds '$FORMATTER_VERSION', not an open-java-format version such as 21.0.1."
     exit 1
 fi
 CACHE_DIR="${HOME}/.cache/open-java-format"