将数据添加为参数后,Jtable内容不会刷新

Question

我有一个jtable,如果我将表数据设置为公共变量(不要将它放在tablemodel的参数上),一切正常.但是现在我需要将表数据设置为参数,表格不会刷新其内容.我打印出一些单元格值和行号,它们都更新和正确.只是显示没有改变,仍然是旧的内容.我一直在尝试所有类型的方法来刷新表,包括fireTableDataChanged和repaint,以及其他fire函数,它们都不起作用.请帮忙.非常感谢!!!!!!

表模型是:

       public class MyTableModel extends AbstractTableModel {

           protected String[] columnNames;
           private String[][] data;


            public MyTableModel(String[] columnNames, String[][] data){
                this.columnNames = columnNames;
                this.data = data;
                //I add this here but it still doesn't refresh the table
                fireTableDataChanged();
            }

            public int getColumnCount() {
                return columnNames.length;
            }

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

            public String getColumnName(int col) {
                return columnNames[col];
            }

            public String getValueAt(int row, int col) {
                return data[row][col];                  
            }

           public void setData(String[][] newdata) {   
              data = newdata;

              fireTableDataChanged();   
              }  
        }

我更新表模型和表的代码是:

        tableModel=new MyTableModel(columnNames, data);
        tableModel.fireTableDataChanged();
        table = new JTable();
        table.setModel(tableModel); 
        ((AbstractTableModel) table.getModel()).fireTableDataChanged();
        //outputs showed the content is updated
        System.out.println("total row count" + table.getRowCount());
        System.out.println("cell info" + table.getValueAt(0,5));


        table.repaint();
        feedback.repaint();
        this.repaint();

Answer 1

你不应该重新分配你的桌子:

 tableModel=new MyTableModel(columnNames, data);
 tableModel.fireTableDataChanged(); // not necessary
 table = new JTable(); // dont do this, you are removing your handle to the table in your view
 table.setModel(tableModel);