将二维数组转换为字符串 [英] convert two-dimensional array to string

问题描述

我正在尝试将 String [] [] 转换为字符串以在GUI中显示。这是我的代码：

I'm trying to convert a String[][] to a string for display in a GUI. Here's my code:

String[][] tableBornes = SearchPropertiesPlugin.FillBornesTable();
String table = tableBornes.toString();

以下是它的产生：

[[Ljava.lang.String; @ 19b8858

如何获得更具可读性的内容？

How can I get something more readable?

推荐答案

如果要创建数组的单行表示，可以使用 Arrays.deepToString 。

If you want to create one-line representation of array you can use Arrays.deepToString.

如果您想创建多个行代表你可能需要遍历所有行并附加结果 Array.toString（array [row]） like

In case you want to create multi-line representation you will probably need to iterate over all rows and append result of Array.toString(array[row]) like

String[][] array = { { "a", "b" }, { "c" } };

String lineSeparator = System.lineSeparator();
StringBuilder sb = new StringBuilder();

for (String[] row : array) {
    sb.append(Arrays.toString(row))
      .append(lineSeparator);
}

String result = sb.toString();

从Java 8开始，你甚至可以使用 StringJoiner with会自动为你添加分隔符：

Since Java 8 you can even use StringJoiner with will automatically add delimiter for you:

StringJoiner sj = new StringJoiner(System.lineSeparator());
for (String[] row : array) {
    sj.add(Arrays.toString(row));
}
String result = sj.toString();

或使用流

String result = Arrays
        .stream(array)
        .map(Arrays::toString) 
        .collect(Collectors.joining(System.lineSeparator()));

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