Question

我有这三种方法，其中read（）用于从＆＃39; database.db＆＃39;中读取存储的数据。形式：名字|姓氏| mi | dob | last met |特殊工作|注释。（注意：替换＆＃39; |＆＃39;用＆＃39;`＆＃39;）iterations（）方法用于查找＆data;数据库中的行数。为了知道read（）中for循环的循环次数。最后是有问题的方法，createUIComponents（）方法。该方法从read（）接收String [] []，从iterations（）接收迭代以在循环中使用并将它们存储在列表模型中。然而，一旦数据库中有数据，这些方法就可以很好地工作。经过第8行或第8次迭代，它不会将其存储在列表模型中。有人可以详细说明我做错了什么吗？公共类读者{

public static String[][] read() throws IOException {
    File database = new File("database.db");
    if(database.exists()) {
        int iterations = iterations();
        BufferedReader in = new BufferedReader(new FileReader("database.db"));
        String[][] dbalt = new String[iterations][8];
        System.out.println("Iterations: " + iterations);

        for (int i = 0; i != iterations; i++) {

            dbalt[i] = in.readLine().split("`");
            System.out.println(Arrays.toString(dbalt[i]));


    }

        return dbalt;

    }
    return null;
}

public static int iterations() throws IOException {
    int iterations = 0;
    BufferedReader in = new BufferedReader(new FileReader("database.db"));

    while (true) {
        final String line = in.readLine();
        if (line == null) break;
        iterations++;
    }

    in.close();
    return iterations;

}
}

//这是一个单独的类

private void createUIComponents() {

    DefaultListModel<String> listmodel = new DefaultListModel<>();
    try {
        String[][] store = Reader.read();
            for (int i = 0; i != Reader.iterations(); i++) {
                try {
                    if (!(store[i][i].equals(""))) {
                        listmodel.addElement(Arrays.toString(store[i]));
                        System.out.println("Listmode=" + Arrays.toString(store[i]));
                    }
                } catch (ArrayIndexOutOfBoundsException e) {}
            }

    } catch(IOException e) {}

    list1 = new JList<>(listmodel);
    JScrollPane addedtolist = new JScrollPane(list1);

}

对于调试，以下是使用＆＃39; database.db＆＃39;输出sysouts的示例。含：蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松|（）4606 763-0932 |棚子太多1 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松|（）4606 763-0932 |棚子太多2 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松| (460)763-0932 |棚子太多3 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松|（）4606 763-0932 |棚子太多4 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松|（）4606 763-0932 |棚子太多5 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松| (460)763-0932 |棚子太多6 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松| (460)763-0932 |棚子太多7 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松|（）4606 763-0932 |棚子太多8 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松|（）4606 763-0932 |棚子太多9 蓬松|猫| A | 6/9/2018 | 5/7/2018 |非常蓬松| (460)763-0932 |棚子太多10

注意：替换＆＃39; |＆＃39;与＆＃39;`＆＃39;。

输出：

Iterations: 10 [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much1] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much2] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much3] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much4] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much5] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much6] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much7] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much8] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much9] [Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much10] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much1] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much2] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much3] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much4] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much5] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much6] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much7] Listmode=[Fluffy, Cat, A, 6/9/2018, 5/7/2018, Is very fluffy, (460)763-0932, Sheds too much8]

DefaultListModel在多维数组

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