jtable 单元格 添加 提示

jTable.addMouseMotionListener(new MouseMotionListener() {

                public void mouseMoved(MouseEvent e) {

                    Point point = e.getPoint();

                    int x = jTable.rowAtPoint(point);

                    int y = jTable.columnAtPoint(point);

                    if (x != row || y != column) {

                        row = x;

                        column = y;

                    }

                    Object object = jTable.getValueAt(row, column);

                    if (object != null) {

                        jTable.setToolTipText("这里写上你的提示吧");

                    }

                }

            });