多维数组的Java序列化 [英] Java serialization of multidimensional array

问题描述

时有可能使Java中的二维数组序列化？

Is it possible to make a 2D array in java serializable?

如果不是，我期待翻译一个3x3的二维数组到向量的矢量。

If not, i am looking to "translate" a 3x3 2D array into a Vector of Vectors.

我一直与载体玩弄，我仍然不确定如何重新present这一点。谁能帮我？

I have been playing around with vectors, and I am still unsure of how to represent that. Can anyone help me?

谢谢！

推荐答案

在Java中数组是序列化 - 因此数组的数组序列化太

Arrays in Java are serializable - thus Arrays of Arrays are serializable too.

它们包含可能不是，虽然如此，检查数组的内容是可序列化的对象 - 如果没有，做起来很

The objects they contain may not be, though, so check that the array's content is serializable - if not, make it so.

下面是一个例子，使用int数组。

Here's an example, using arrays of ints.

public static void main(String[] args) {

	int[][] twoD = new int[][] { new int[] { 1, 2 },
			new int[] { 3, 4 } };

	int[][] newTwoD = null; // will deserialize to this

	System.out.println("Before serialization");
	for (int[] arr : twoD) {
		for (int val : arr) {
			System.out.println(val);
		}
	}

	try {
		FileOutputStream fos = new FileOutputStream("test.dat");
		ObjectOutputStream oos = new ObjectOutputStream(fos);
		oos.writeObject(twoD);

		FileInputStream fis = new FileInputStream("test.dat");
		ObjectInputStream iis = new ObjectInputStream(fis);
		newTwoD = (int[][]) iis.readObject();

	} catch (Exception e) {

	}

	System.out.println("After serialization");
	for (int[] arr : newTwoD) {
		for (int val : arr) {
			System.out.println(val);
		}
	}
}

输出：

Before serialization
1
2
3
4
After serialization
1
2
3
4

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