java 实现文件管理系统

Java可以使用File和Path类来实现文件管理系统。以下是一个简单的示例：

1. 创建一个新文件

File file = new File("path/to/file.txt");
try {
    if (file.createNewFile()) {
        System.out.println("File created successfully");
    } else {
        System.out.println("File already exists");
    }
} catch (IOException e) {
    System.out.println("An error occurred while creating the file");
    e.printStackTrace();
}

2. 读取文件内容

Path path = Paths.get("path/to/file.txt");
try {
    List<String> lines = Files.readAllLines(path);
    for (String line : lines) {
        System.out.println(line);
    }
} catch (IOException e) {
    System.out.println("An error occurred while reading the file");
    e.printStackTrace();
}

3. 写入文件内容

Path path = Paths.get("path/to/file.txt");
try {
    List<String> lines = Arrays.asList("Hello", "world");
    Files.write(path, lines);
    System.out.println("File written successfully");
} catch (IOException e) {
    System.out.println("An error occurred while writing to the file");
    e.printStackTrace();
}

4. 删除文件

File file = new File("path/to/file.txt");
if (file.delete()) {
    System.out.println("File deleted successfully");
} else {
    System.out.println("Failed to delete the file");
}

这只是一个简单的示例，实际的文件管理系统可能需要更复杂的功能，例如创建目录、移动文件、重命名文件等。