如何在Java中初始化字符串的二维数组 [英] How to initialize a 2D array of strings in java

问题描述

我知道如何声明数组，并且已经声明了：

I know how to declare the array and I have done so:

String[][] board1 = new String[10][10];

现在我要使它成为默认情况下每个空格都是-（不带引号课程）。我看到了其他类似的问题，但答案对我来说没有意义。我所能理解的就是，我可能需要一个for循环。

Now I want to make it so that every space is "-" by default (without the quotes of course). I have seen other questions like this but the answers didn't make sense to me. All I can understand is that I would probably need a for loop.

推荐答案

我能想到的最快的方法是使用< a href = http://docs.oracle.com/javase/7/docs/api/java/util/Arrays.html#fill%28java.lang.Object[],%20java.lang.Object%29 rel = noreferrer> Arrays.fill（Object []，Object） 像这样，

The quickest way I can think of is to use Arrays.fill(Object[], Object) like so,

String[][] board1 = new String[10][10];
for (String[] row : board1) {
    Arrays.fill(row, "-");
}
System.out.println(Arrays.deepToString(board1));

这是使用 For-Each 迭代 String [] （ board1 ），并用-填充。然后，它使用 Arrays.deepToString（Object []） 进行打印。

This is using a For-Each to iterate the String[](s) of board1 and fill them with a "-". It then uses Arrays.deepToString(Object[]) to print it.

这篇关于如何在Java中初始化字符串的二维数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！