public void actionPerformed(java.awt.event.ActionEvent evt) {
        if (evt.getSource() == btnEnterRecord) {
            MainGUI.this.btnEnterRecordActionPerformed(evt);
        }
        else if (evt.getSource() == btnDisplayList) {
            MainGUI.this.btnDisplayListActionPerformed(evt);
        }
        else if (evt.getSource() == btnSearch) {
            MainGUI.this.btnSearchActionPerformed(evt);
        }
        else if (evt.getSource() == btnUpdate) {
            MainGUI.this.btnUpdateActionPerformed(evt);
        }
        else if (evt.getSource() == btnSortList) {
            MainGUI.this.btnSortListActionPerformed(evt);
        }
    }// </editor-fold>//GEN-END:initComponents