java - 在 JTable 中显示哈希表数据？

Question

我有一个哈希表

hashtable c = new Hashtable();

Employee emp = new Employee("E1001","Sky");
c.put("E1001",emp);

然后我就有了一个 JTable

Object[][] data = {

                {"", ""},

        };

String[] headers = {"Employee Code", "Employee First Name"};
JTable table = new JTable(data, headers);

我似乎无法弄清楚如何将 hashtable 项添加到 JTable

Answer 1

如果我没看错的话，就像......

Object[][] data = new Object[c.size()][2];
int row = 0;
for (Object key : c.keySet()) {
    data[row][0] = key;
    Employee emp = (Employee)c.get(key);
    data[row][1] = ...; // Get name from Employee object...
    // Personally, I prefer to assign the Employee object to
    // the column of the row and use a TableCellRenderer to
    // renderer it
}

String[] headers = {"Employee Code", "Employee First Name"};
JTable table = new JTable(data, headers);

应该可以...

现在，如果您希望在 HashMap 和 TableModel 之间建立更牢固的关系(这样您就可以向表中添加内容，它会更新 HashMap)，您将需要使用 AbstractTableModel 并亲手映射模型要求和 HashMap

之间的内容