输入学生姓名，Java成绩，按分数从高到低排序后存储在文件score.txt中。

好的，以下是Java语言的代码实现：

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

public class ScoreSorter {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        List<Student> students = new ArrayList<>();

        // 输入学生信息
        while (true) {
            System.out.print("请输入学生姓名（输入0结束输入）：");
            String name = scanner.next();
            if ("0".equals(name)) {
                break;
            }
            System.out.print("请输入" + name + "的Java成绩：");
            int score = scanner.nextInt();
            students.add(new Student(name, score));
        }

        // 按分数从高到低排序
        Collections.sort(students);

        // 将排序后的结果写入文件
        try (BufferedWriter writer = new BufferedWriter(new FileWriter("score.txt"))) {
            for (Student student : students) {
                writer.write(student.getName() + " " + student.getScore());
                writer.newLine();
            }
            System.out.println("成绩已保存到score.txt文件中");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    static class Student implements Comparable<Student> {
        private String name;
        private int score;

        public Student(String name, int score) {
            this.name = name;
            this.score = score;
        }

        public String getName() {
            return name;
        }

        public int getScore() {
            return score;
        }

        @Override
        public int compareTo(Student o) {
            return o.score - this.score;
        }
    }
}

在运行程序后，按照提示输入学生姓名和Java成绩，输入0结束输入。程序会将学生信息按照Java成绩从高到低排序，并将排序结果写入文件score.txt中。