Java 8 has introduced some new fields for DataFlavor, without @since 1.8 tag in javadoc.

Often developer does not have Java 1.6, but a customer has an old java version.
When a developer uses a public API, they should be sure that it will work on a customer's computer, without runtime errors.

Document Location
=================
https://docs.oracle.com/javase/8/docs/api/java/awt/datatransfer/DataFlavor.html
public static DataFlavor selectionHtmlFlavor
public static DataFlavor fragmentHtmlFlavor
public static DataFlavor allHtmlFlavor

What is wrong
=============
Add @since tag where needed

Sample code:
=============

public class DND {
    public static void main(String[] args) {
        System.out.println(java.awt.datatransfer.DataFlavor.allHtmlFlavor);
    }
}

C:\test>"C:\Program Files\Java\jdk1.8.0_51\bin\javac.exe" -source 1.6 -target 1.6 DND.java
warning: [options] bootstrap class path not set in conjunction with -source 1.6
1 warning


C:\test>"C:\Program Files\Java\jdk1.6.0_45\bin\java.exe" DND
Exception in thread "main" java.lang.NoSuchFieldError: allHtmlFlavor
       at DND.main(DND.java:5)