AbstractTableModel setValueAt方法未被调用

时间:2014-10-18 17:29:45

标签: java swing jtable mouselistener abstracttablemodel

每次点击标题时,我都会尝试使用setValueAt方法在jtablemodel中设置一个值。我目前有一个MouseAdapter正确显示正在单击哪个列但是没有调用board.setValueAt()方法。

鼠标侦听器。这会正确显示我单击的列。我尝试过使用board.getModel()。setValueAt(),但这也没用。

public class HeaderListener extends MouseAdapter{
    private JTable board;
    public HeaderListener(JTable board){
        this.board = board;
    }

    @Override
    public void mouseClicked(MouseEvent event) {
        Point point = event.getPoint();
        int column = board.columnAtPoint(point);
        System.out.println(column);
        Data value = new Data(0,"yes");
        board.setValueAt(value, 0, column);
    }
}

TableModel的即可。输入"设置值"永远不会显示到控制台。当我试图覆盖它时,它给了我一个错误。

public class TableModel extends AbstractTableModel{
    private Data[][] data; 
    private String[] columnNames = {"Move Here",
                        "Move Here",
                        "Move Here",
                        "Move Here",
                        "Move Here","Move Here"};

    public TableModel(){
        data = new Data[6][7];
        Data test = new Data(0,"yes");
        data[1][1] = test;
    }

    @Override
    public int getRowCount() {
        return data.length;
    }

    @Override
    public int getColumnCount() {
        return columnNames.length;
    }
    @Override
    public String getColumnName(int col) {
        return columnNames[col];
    }
    @Override
    public Object getValueAt(int row, int col) {
        return (data[row][col]==null?"":data[row][col].getText());
    }

    public void setValueAt(Data data2, int row, int col){
        System.out.println("Set value at entered");
        data[row][col] = data2;
        fireTableCellUpdated(row,col);
        System.out.println(data[row][col].getText());
        System.out.println(data[row][col].getPlayer());
    }

}

主要方法板创建......

JTable board = new JTable(new TableModel());
board.getTableHeader().addMouseListener(new HeaderListener(board));

谁能告诉我我做错了什么?

1 个答案:

答案 0 :(得分:5)

您的setValueAt方法签名与AbstractTableModel的签名不匹配,因此不会覆盖超级自己的方法。第一个参数应该是Object,而不是Data。在重写方法时始终使用@Override注释,以允许编译器检查以确保您正确执行此操作。