请你帮我编写一个基于Java的MES系统

MES (Manufacturing Execution System) 是一种用于控制制造过程的计算机系统。它通常包括以下模块：生产调度、物料跟踪、质量控制、人力资源管理等。下面是一个简单的MES系统的Java实现，供你参考。

1. 生产调度模块

public class ProductionScheduler {
    private List<Job> jobList;
    private MachineManager machineManager;

    public ProductionScheduler(List<Job> jobList, MachineManager machineManager) {
        this.jobList = jobList;
        this.machineManager = machineManager;
    }

    public void schedule() {
        for (Job job : jobList) {
            Machine machine = machineManager.getAvailableMachine(job.getMachineType());
            if (machine == null) {
                System.out.println("No available machine for job " + job.getId());
                continue;
            }
            machine.startJob(job);
        }
    }
}

2. 物料跟踪模块

public class MaterialTracker {
    private Map<String, Integer> inventory;

    public MaterialTracker(Map<String, Integer> inventory) {
        this.inventory = inventory;
    }

    public boolean consumeMaterials(Job job) {
        Map<String, Integer> requiredMaterials = job.getRequiredMaterials();
        for (Map.Entry<String, Integer> entry : requiredMaterials.entrySet()) {
            String materialName = entry.getKey();
            int requiredQuantity = entry.getValue();
            if (inventory.getOrDefault(materialName, 0) < requiredQuantity) {
                System.out.println("Insufficient " + materialName + " for job " + job.getId());
                return false;
            }
        }
        for (Map.Entry<String, Integer> entry : requiredMaterials.entrySet()) {
            String materialName = entry.getKey();
            int requiredQuantity = entry.getValue();
            inventory.put(materialName, inventory.getOrDefault(materialName, 0) - requiredQuantity);
        }
        return true;
    }

    public void addInventory(String materialName, int quantity) {
        inventory.put(materialName, inventory.getOrDefault(materialName, 0) + quantity);
    }
}

3. 质量控制模块

public class QualityController {
    private Map<String, Integer> defectCounts;

    public QualityController() {
        this.defectCounts = new HashMap<>();
    }

    public boolean inspect(Product product) {
        boolean isDefective = // perform quality inspection
        if (isDefective) {
            String defectType = // determine defect type
            defectCounts.put(defectType, defectCounts.getOrDefault(defectType, 0) + 1);
        }
        return !isDefective;
    }

    public Map<String, Integer> getDefectCounts() {
        return defectCounts;
    }
}

4. 人力资源管理模块

public class HumanResourceManager {
    private List<Employee> employeeList;

    public HumanResourceManager(List<Employee> employeeList) {
        this.employeeList = employeeList;
    }

    public Employee getAvailableEmployee(String skill) {
        for (Employee employee : employeeList) {
            if (employee.hasSkill(skill) && !employee.isBusy()) {
                return employee;
            }
        }
        return null;
    }
}

5. MES系统主类

public class MESSystem {
    public static void main(String[] args) {
        // initialize data
        List<Job> jobList = // load job data
        MachineManager machineManager = // create machine manager
        MaterialTracker materialTracker = // create material tracker
        QualityController qualityController = // create quality controller
        HumanResourceManager humanResourceManager = // create human resource manager

        // create production scheduler
        ProductionScheduler productionScheduler = new ProductionScheduler(jobList, machineManager);

        // start production
        productionScheduler.schedule();

        // inspect products
        int numDefectiveProducts = 0;
        for (Product product : machineManager.getFinishedProducts()) {
            if (!qualityController.inspect(product)) {
                numDefectiveProducts++;
            }
        }
        System.out.println("Defect types and counts: " + qualityController.getDefectCounts());

        // log output
        // ...
    }
}

以上代码只是一个简单的MES系统的Java实现，具体实现还需要根据实际情况进行调整和完善。