java - 数组数组到表

Question

面临将数组数组打印到表的问题。我的程序将表数据保存到单独的文本文件(每天都有单独的文件)。现在我想阅读全部内容并对每个字段求和。我保存的文本文件如下所示:

0   Name    auto    note    note.tot    insurance   ins.tot offer
1   john    51  6   2   21  44  12  
2   peter   32  5   1   36  65  20  
3   smith   12  2   1   45  53  9   
4   mike    5   0   0   17  55  11  

我已经找到了一种读取它并将数值保存到数组[][]的方法。但现在我需要将该数组打印到表中。

这是我的读取文件代码:

OK4.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
        File f = new File(fileName);
        if (f.exists()) {
            try {
                tableModel = new DefaultTableModel(new Object[] {"#", "Name", "auto", "note", "note.tot", "insurance", "ins.tot", "offer"},0);
                BufferedReader br = new BufferedReader(new FileReader(fileName));
                String line = br.readLine();
                String[] colHeaders = line.split("\\s+");
                tableModel.setColumnIdentifiers(colHeaders);

                while ((line = br.readLine()) != null) {
                    String[] data = line.split("\\s+");
                    tableModel.addRow(data);
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        } else {
            JOptionPane.showMessageDialog(null, "This date was not saved");
        };
        table.setModel(tableModel);
        table.getColumnModel().getColumn(0).setMaxWidth(22);
    }
});

这是我遇到问题的代码:

OK5.addActionListener(new ActionListener() {
    @Override

    public void actionPerformed(ActionEvent e) {
        int[][] array = null;
        int counter = 0;
        mon = (String) month.getValue();
        for (int i = 1; i < 32; i++) {
            counter = 0;
            fileName= mon + i + ".txt";
            File f = new File(fileName);
            if (f.exists()) {
                try {
                    BufferedReader br = new BufferedReader(new FileReader(fileName));
                    String line = br.readLine();
                    String[] colHeaders = line.split("\\s+");
                    tableModel = new DefaultTableModel(new Object[] {"#", "name", "auto", "note", "note.tot", "insurance", "ins.tot", "offer"}, 0);
                    tableModel.setColumnIdentifiers(colHeaders);

                    while ((line = br.readLine()) != null) {
                        counter = counter + 1;
                        String[] info = line.split("\\s+");
                        for(int j = 2; j < 8; j++) {
                            int num = Integer.parseInt(info[j]);
                            array[j][counter]=array[j][counter] + num;
                        }
                    };
                } catch (Exception ex) {}
            };
        };

        // and here is trying to display it. but it wont work
        tableModel.addRow(array[1][]);
    }
});

错误代码是:int 无法转换为 vector

但是我应该将其转换为 vector 吗？可能还有另一种方式在表格中显示它？

Answer 1

实际上错误代码是完全没有意义的，因为实际的错误只是矩阵的访问:tableModel.addRow(array[1][]);实际上应该导致第二个括号([])的语法错误。要修复语法错误，请将该行替换为 tableModel.addRow(array[1]);。一般注意事项:请格式化您的代码，它完全不可读。