JAVA现有一个整型数组{10,20,30,40,50,60,70,80,90,100}，使用随机文件流将其存入文件number.txt中，然后将数据读取出来并输出。

在Java中，你可以使用`java.io`包下的`FileWriter`、`BufferedWriter`和`RandomAccessFile`来实现这个功能。以下是步骤：

1. **将整型数组写入文件**:

import java.io.*;
import java.util.Arrays;

public class ArrayToFile {
    public static void main(String[] args) {
        int[] numbers = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100};
        String fileName = "number.txt";

        try (FileWriter writer = new FileWriter(fileName);
             BufferedWriter bufferWriter = new BufferedWriter(writer)) {

            // 将数组转换为字符串，逗号分隔
            for (int number : numbers) {
                bufferWriter.write(number + ",");
            }

            // 删除最后一个逗号
            bufferWriter.write("\n");
            bufferWriter.flush();

        } catch (IOException e) {
            System.err.println("Error writing to file: " + e.getMessage());
        }
    }
}

2. **从文件中读取数据并输出**:

public class ReadFile {
    public static void main(String[] args) {
        String fileName = "number.txt";
        try (RandomAccessFile reader = new RandomAccessFile(fileName, "r")) {
            
            long length = reader.length(); // 获取文件长度
            byte[] bytes = new byte[(int) length];
            reader.readFully(bytes);

            // 使用字符串处理工具解析二进制数据
            String readString = new String(bytes, StandardCharsets.UTF_8);
            String[] numbersStr = readString.split(",");
            for (String numberStr : numbersStr) {
                System.out.println(Integer.parseInt(numberStr));
            }

        } catch (IOException e) {
            System.err.println("Error reading from file: " + e.getMessage());
        }
    }
}

运行这两个程序，首先会把数组存储到文件中，然后读取文件内容并打印。