What are some use cases of Java functions in the healthcare industry?

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class PatientDataAnalysis {

    public static void main(String[] args) {
        // 患者就诊记录列表
        List<PatientRecord> records = Arrays.asList(
            new PatientRecord("John Doe", "Diabetes", "High blood pressure"),
            new PatientRecord("Jane Smith", "Cancer", "Heart disease")
        );

        // 根据疾病分组患者
        Map<String, List<PatientRecord>> groupedRecords = records.stream()
            .collect(Collectors.groupingBy(PatientRecord::getDiagnosis));

        // 打印每个疾病组和患者数量
        for (Map.Entry<String, List<PatientRecord>> entry : groupedRecords.entrySet()) {
            System.out.println("Disease: " + entry.getKey());
            System.out.println("Number of patients: " + entry.getValue().size());
        }
    }
}

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;

public class MedicalImageAnalysis {

    public static void main(String[] args) throws IOException {
        // 从文件中加载医学影像
        BufferedImage image = ImageIO.read(new File("image.jpg"));

        // 提高影像对比度
        adjustContrast(image);

        // 使用图像分割算法分割影像
        BufferedImage segmentedImage = segmentImage(image);

        // 保存分割后的图像
        Files.write(Paths.get("segmented_image.jpg"), image);
    }
}

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class MedicationManagement {

    public static void main(String[] args) {
        // 患者药物信息
        Map<String, Drug> medications = new HashMap<>();
        medications.put("Ibuprofen", new Drug("Ibuprofen", new Date(), 30));
        medications.put("Acetaminophen", new Drug("Acetaminophen", new Date(), 60));

        // 检查患者是否服用了药物
        for (Map.Entry<String, Drug> entry : medications.entrySet()) {
            if (entry.getValue().isTaken()) {
                System.out.println("Patient has taken " + entry.getKey());
            }
        }
    }
}