There is a typo: 'AccessiblJTableHeaaderEntry' instead of 'AccessibleJTableHeaderEntry'
            /**
             * Constructs an AccessiblJTableHeaaderEntry
             * @since 1.4
             *
             * @param c the column index
             * @param p the parent <code>JTableHeader</code>
             * @param t the table <code>JTable</code>
             */
            public AccessibleJTableHeaderEntry(int c, JTableHeader p, JTable t) {