There's an off-by-one-pixel typo here:

--- a/src/java.base/share/classes/java/nio/X-Buffer.java.template
+++ b/src/java.base/share/classes/java/nio/X-Buffer.java.template
@@ -700,7 +700,7 @@
      *
      * <pre>{@code
      * for (int i = off; i < off + len; i++)
- * dst[i] = src.get():
+ * dst[i] = src.get();
      * }</pre>
      *
      * except that it first checks that there are sufficient $type$s in