Method isOpen

app/src/main/java/javax/mail/Folder.java:652–652

Indicates whether this Folder is in the 'open' state. @return true if this Folder is in the 'open' state.

()

     * @return  true if this Folder is in the 'open' state.
     */
    public abstract boolean isOpen();

    /**
     * Return the open mode of this folder.  Returns