如何检索JTable中的数据为一个数组 [英] How to Retrieve JTable Data as an Array

问题描述

我已经通过与（一个DefaultTableModel填充一个JTable对象[] [] 的数据，的String [] 标题）构造函数。用户可以编辑的表，我希望能够回到加载新的数据到一个数组（对象[] [] ）。请注意，我宁愿不只是更新由位阵列位，但能够完全只是从表中加载新的数组。如何才能做到这一点？

I've populated a JTable through a DefaultTableModel with the (Object[][] data, String[] headers) constructor. Users can edit the table, and I want to be able to load the new data back into an array (Object[][]). Note that I'd rather not just update the array bit by bit, but be able to just completely load a new array from the table. How can this be done?

推荐答案

我收回那句话，2日的想法，你不需要任何类型转换 - TableModel的是，有所有3方法调用你需要的接口。 ：）

I take that back, on 2nd thoughts, you dont need any typecasting - TableModel is an interface that has all the 3 method calls you need. :)

摘要：获取表的模型，检查其类并将其类型强制转换为相应的类（abstract或默认的TableModel），以及使用它的方法来加载新创建的数组。有些伪code：

Summary: Get the model for the table, check its class and typecast it to appropriate class (Abstract or Default TableModel), and use its methods to load a newly created array. Some psuedoCode:

public Object[][] getTableData (JTable table) {
    DefaultTableModel dtm = (DefaultTableModel) table.getModel();
    int nRow = dtm.getRowCount(), nCol = dtm.getColumnCount();
    Object[][] tableData = new Object[nRow][nCol];
    for (int i = 0 ; i < nRow ; i++)
        for (int j = 0 ; j < nCol ; j++)
            tableData[i][j] = dtm.getValueAt(i,j);
    return tableData;
}

您的头不应该由用户编辑修改。希望有所帮助。问候， - M.S

Your headers should not have changed by user-edits. Hope that helps. Regards, - M.S.

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