Java代码无法删除文件

import java.io.File;

public class DeleteFileExample {
    public static void main(String[] args) {
        File file = new File("C:\\path\\to\\file.txt");
        if (file.exists()) {
            boolean deleted = file.delete();
            if (deleted) {
                System.out.println("File deleted successfully.");
            } else {
                System.out.println("File deletion failed.");
            }
        } else {
            System.out.println("File does not exist.");
        }
    }
}