From: 7.1.1 General Form and google/google-java-format#1279 (comment)

7.1.1 General form
The basic formatting of Javadoc blocks is as seen in this example:

/**
 * Multiple lines of Javadoc text are written here,
 * wrapped normally...
 */
public int method(String p1) { ... }

... or in this single-line example:
/** An especially short bit of Javadoc. */
The basic form is always acceptable. The single-line form may be substituted when the entirety of the Javadoc block (including comment markers) can fit on a single line.

Part of 17778, subproblem 3

According to Google Java Style, the preferred form is to place /** and */ on their own lines unless the entire Javadoc comment fits on a single line. However, in google_checks.xml, the JavadocLeadingAsteriskAlign check validates the alignment of the closing asterisk only when whitespace appears before the */. It ignore the alignment of leading asterisk when non-whitespace characters appear before the */. The following example is:

  /**
   * Correct Indentation for leading asterisk. */
  private void foo2() {}

If we can add support for validating the alignment of the closing */, it would improve compliance with the Google Javadoc style.

Google Formatter

Test.java

public class Test {
  
  /**
   * void constructor.
   *
   * @param a testing... */
  public Test(int a) {}

}

cli:
$ java -jar google-java-format-1.33.0-all-deps.jar Test.java > FormattedCode.java

Formatted Code:

public class Test {

  /**
   * void constructor.
   *
   * @param a testing...
   */
  public Test(int a) {}
}

Cli:

$ diff -Naru Test.java FormattedCode.java
--- Test.java   2025-12-12 00:50:02.874673400 +0530
+++ FormattedCode.java  2025-12-12 00:51:12.628082900 +0530
@@ -1,9 +1,9 @@
 public class Test {
-
+
   /**
    * void constructor.
    *
-   * @param a testing... */
+   * @param a testing...
+   */
   public Test(int a) {}
-
 }