如何从文件中删除特定的用户列表。文件包含多个用户详细信息列表

Question

在上面的代码中，我接受了用户输入并将其存储在要存储到文件中的列表中的列表中，因此我需要从文件中获取特定列表并从文件中删除特定列表

void delete() {
        File file = new File("E://Demo1.txt");
        if (file.exists()) {
            System.out.println("Enter the Email you want to delete from the list");
            String email = sc.next();

            // this for each loop will fetch the list of all the users and check the
            // condition given by the user
            for (UserDetails p : al) {
                if (p.getEmail().equals(email)) {
                    al.remove(p);
                    System.out.println("List is deleted");
                    break;
                } else {
                    System.out.println("Entered email is not in the list");
                }

            }
        }