Method exists

app/src/main/java/javax/mail/Folder.java:237–237

Tests if this folder physically exists on the Store. This method can be invoked on a closed Folder. @return true if the folder exists, otherwise false @see #create @exception MessagingException typically if the connection to the server is lost.

()

     *			to the server is lost.
     */
    public abstract boolean exists() throws MessagingException;

    /**
     * Returns a list of Folders belonging to this Folder's namespace