无法将列比较器设置为JTable [英] Trouble setting a column comparator to a JTable

问题描述

在另一个线程中，我找到了这个比较器（post的底部），用于对JTable列进行排序，这些列可以由整数，字符串或两者组成。我无法弄清楚如何将它应用于我的JTable。我的表之前使用过自动创建的行排序器。我将其设置为false，我现在正在使用：

In another thread I found this comparator (bottom of post) for sorting JTable columns that could be composed of integers, strings, or both. I cannot figure out how to apply it to my JTable. My table was using the auto created row sorter before. I set that to false and I am now using:

TableRowSorter<MyTableModel> rowSorter = new TableRowSorter<MyTableModel>();
jtable.setRowSorter(rowSorter);
rowSorter.setComparator(0, c1);

我得到一个索引超出范围的例外，说我提供了无效的范围。我的表有多列。这是应用比较器的正确方法吗？我觉得这不是这样做的。

I get an index out of bounds exception saying I am providing an invalid range. My table has multiple columns though. Is this the correct way to apply the comparator? I feel like this is not the way to do it.

Comparator c1 = new java.util.Comparator() {
    /**
     * Custom compare to sort numbers as numbers.
     * Strings as strings, with numbers ordered before strings.
     * 
     * @param o1
     * @param o2
     * @return
     */
@Override
            public int compare(Object oo1, Object oo2) {
                boolean isFirstNumeric, isSecondNumeric;
                String o1 = oo1.toString(), o2 = oo2.toString();


        isFirstNumeric = o1.matches("\\d+");
        isSecondNumeric = o2.matches("\\d+");

        if (isFirstNumeric) {
            if (isSecondNumeric) {
                return Integer.valueOf(o1).compareTo(Integer.valueOf(o2));
            } else {
                return -1; // numbers always smaller than letters
            }
        } else {
            if (isSecondNumeric) {
                return 1; // numbers always smaller than letters
            } else {
                isFirstNumeric = o1.split("[^0-9]")[0].matches("\\d+");
                isSecondNumeric = o2.split("[^0-9]")[0].matches("\\d+");

                if (isFirstNumeric) {
                    if (isSecondNumeric) {
                        int intCompare = Integer.valueOf(o1.split("[^0-9]")[0]).compareTo(Integer.valueOf(o2.split("[^0-9]")[0]));
                        if (intCompare == 0) {
                            return o1.compareToIgnoreCase(o2);
                        }
                        return intCompare;
                    } else {
                        return -1; // numbers always smaller than letters
                    }
                } else {
                    if (isSecondNumeric) {
                        return 1; // numbers always smaller than letters
                    } else {
                        return o1.compareToIgnoreCase(o2);
                    }
                }
            }
        }
    }
};

推荐答案

手动设置RowSorter时，你必须小心保持与模型同步：

when manually setting a RowSorter, you have to take care of keeping it in synch with the model yourself:

 TableRowSorter sorter = new TableRowSorter();
 table.setRowSorter(sorter);
 sorter.setModel(table.getModel());
 sorter.setComparator(myComparator);

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