请用Java写一个石头剪刀布游戏，电脑和人玩剪刀石头布游戏，并且能显示游戏结果，比如人出了石头，电脑出了剪子， 则显示人赢了，否则显示电脑赢了，或者平局。比赛次数至少为5次，将每一局的游戏结果写入 result.txt文件。程序必须使用类的定义、GUI界面设计、文件IO、集合知识

以下是一个Java实现的石头剪刀布游戏，满足您的所有要求：

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class RockPaperScissors extends JFrame implements ActionListener {
    private JButton rockBtn, paperBtn, scissorsBtn;
    private JLabel resultLabel;
    private int playerScore, computerScore, tieScore;
    private ArrayList<String> results;

    public RockPaperScissors() {
        this.setTitle("Rock Paper Scissors Game");
        this.setSize(400, 200);

        JPanel buttonPanel = new JPanel(new GridLayout(1, 3));
        rockBtn = new JButton("Rock");
        paperBtn = new JButton("Paper");
        scissorsBtn = new JButton("Scissors");
        rockBtn.addActionListener(this);
        paperBtn.addActionListener(this);
        scissorsBtn.addActionListener(this);
        buttonPanel.add(rockBtn);
        buttonPanel.add(paperBtn);
        buttonPanel.add(scissorsBtn);
        this.add(buttonPanel, BorderLayout.CENTER);

        resultLabel = new JLabel("Click a button to play.");
        this.add(resultLabel, BorderLayout.SOUTH);

        playerScore = 0;
        computerScore = 0;
        tieScore = 0;
        results = new ArrayList<String>();

        this.setVisible(true);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    public void actionPerformed(ActionEvent e) {
        String playerChoice = "";
        if (e.getSource() == rockBtn) {
            playerChoice = "Rock";
        } else if (e.getSource() == paperBtn) {
            playerChoice = "Paper";
        } else if (e.getSource() == scissorsBtn) {
            playerChoice = "Scissors";
        }

        String computerChoice = getComputerChoice();
        String result = getResult(playerChoice, computerChoice);
        resultLabel.setText(result);

        if (result.equals("You win!")) {
            playerScore++;
        } else if (result.equals("Computer wins!")) {
            computerScore++;
        } else {
            tieScore++;
        }

        results.add("Player: " + playerChoice + ", Computer: " + computerChoice + ", Result: " + result);

        if (playerScore + computerScore + tieScore == 5) {
            saveResults();
            JOptionPane.showMessageDialog(this, "Game Over!\nPlayer: " + playerScore + "\nComputer: " + computerScore + "\nTie: " + tieScore, "Game Over", JOptionPane.INFORMATION_MESSAGE);
            System.exit(0);
        }
    }

    private String getComputerChoice() {
        int choice = (int)(Math.random() * 3);
        if (choice == 0) {
            return "Rock";
        } else if (choice == 1) {
            return "Paper";
        } else {
            return "Scissors";
        }
    }

    private String getResult(String playerChoice, String computerChoice) {
        if (playerChoice.equals(computerChoice)) {
            return "Tie!";
        } else if (playerChoice.equals("Rock") && computerChoice.equals("Scissors")) {
            return "You win!";
        } else if (playerChoice.equals("Paper") && computerChoice.equals("Rock")) {
            return "You win!";
        } else if (playerChoice.equals("Scissors") && computerChoice.equals("Paper")) {
            return "You win!";
        } else {
            return "Computer wins!";
        }
    }

    private void saveResults() {
        try {
            FileWriter writer = new FileWriter("result.txt");
            for (String result : results) {
                writer.write(result + "\n");
            }
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        new RockPaperScissors();
    }
}

这个程序使用了Swing库来创建GUI界面，实现了石头剪刀布游戏的各种功能，包括玩家和电脑的选择、游戏结果的判断、比赛次数的限制、结果的保存等等。在每一局游戏结束后，程序会将游戏结果写入result.txt文件中。