Summary

The word 'less' is missing in the method-level javadoc of java.util.Arrays.compare(compare(T[] a, T[] b).

Problem

The current version of this javadoc is erroneous:

* A {@code null} array element is considered lexicographically than a
* non-{@code null} array element. Two {@code null} array elements are
* considered equal. 

Solution

Change to:

* A {@code null} array element is considered lexicographically less than a
* non-{@code null} array element. Two {@code null} array elements are
* considered equal. 

Specification

--- old/src/java.base/share/classes/java/util/Arrays.java   2019-11-26 10:25:29.000000000 +0000
+++ new/src/java.base/share/classes/java/util/Arrays.java   2019-11-26 10:25:29.000000000 +0000
@@ -7117,10 +7117,10 @@
-     * A {@code null} array element is considered lexicographically than a
-     * non-{@code null} array element.  Two {@code null} array elements are
+     * A {@code null} array element is considered lexicographically less than a
+     * non-{@code null} array element. Two {@code null} array elements are
      * considered equal.