海龟交易法java代码

海龟交易法是一种股票交易策略，它建立在趋势跟踪的基础上，旨在通过跟踪股票价格的趋势来实现获利。海龟交易法的基本思路是，当股票价格向上突破一定的价格水平时，买入股票；当股票价格向下突破一定的价格水平时，卖出股票。

下面是一个简单的 Java 代码示例，实现了海龟交易法的基本思路：

import java.util.ArrayList;
import java.util.List;

public class TurtleTrader {
    private static final int LONG = 1;
    private static final int SHORT = -1;
    private static final int FLAT = 0;

    private List<Double> prices;
    private int position;
    private double entryPrice;
    private double stopLoss;
    private double takeProfit;

    public TurtleTrader(List<Double> prices) {
        this.prices = prices;
        this.position = FLAT;
    }

    public void run() {
        for (int i = 0; i < prices.size(); i++) {
            double currentPrice = prices.get(i);
            if (position == LONG) {
                if (currentPrice >= takeProfit) {
                    closePosition(currentPrice);
                } else if (currentPrice <= stopLoss) {
                    closePosition(stopLoss);
                }
            } else if (position == SHORT) {
                if (currentPrice <= takeProfit) {
                    closePosition(currentPrice);
                } else if (currentPrice >= stopLoss) {
                    closePosition(stopLoss);
                }
            } else {
                if (currentPrice > entryPrice) {
                    openPosition(LONG, currentPrice, 2 * (currentPrice - entryPrice), entryPrice - (currentPrice - entryPrice));
                } else if (currentPrice < entryPrice) {
                    openPosition(SHORT, currentPrice, 2 * (entryPrice - currentPrice), entryPrice + (entryPrice - currentPrice));
                }
            }
        }
        if (position != FLAT) {
            closePosition(prices.get(prices.size() - 1));
        }
    }

    private void openPosition(int direction, double currentPrice, double takeProfit, double stopLoss) {
        position = direction;
        entryPrice = currentPrice;
        this.takeProfit = takeProfit;
        this