某公司的雇员分为以下若干类: (1) Employee: 这是所有员工总的父类 属性:员工的姓名,员工的生日月份 @方法: getSalary(int month) 根据参数月份来确定工资，如果该月员工过生日，则公司会额外奖励100 元. (2) SalariedEmployee: Employee 的子类，拿固定工资的员工属性: 月薪。 (3)HoulyEmployee: Employee 的子类，按小时拿工资的员工，每月工作超出160小时的部分按照1.5 倍工资发放属性:每小时的工资、每月工作的小时数。 (4) SalesEmployee: Employee 的子类，销售，工资由月销售额和提成率决定属性:月销售额、提成率。(5) BasePlusSalesEmployee: SalesEmployee 的子类，有固定底薪的销售人员，工资由底薪加上销售提成部分。 属性: 底薪。 要求: 创建一个Employee 数组，分别创建若千不同的Eployee对象，并打印某个月的工资。1 注意:要求把每个类都做成完全封装，不允许非私有化属性。

好的，您的问题是如何创建Employee数组并打印某个月的工资。

首先，我们需要定义Employee及其子类的属性和方法，并且将它们封装起来。以下是一个可能的实现：

public abstract class Employee {
    private String name;
    private int birthMonth;

    public Employee(String name, int birthMonth) {
        this.name = name;
        this.birthMonth = birthMonth;
    }

    public String getName() {
        return name;
    }

    public int getBirthMonth() {
        return birthMonth;
    }

    public abstract double getSalary(int month);
}

public class SalariedEmployee extends Employee {
    private double monthlySalary;

    public SalariedEmployee(String name, int birthMonth, double monthlySalary) {
        super(name, birthMonth);
        this.monthlySalary = monthlySalary;
    }

    public double getMonthlySalary() {
        return monthlySalary;
    }

    @Override
    public double getSalary(int month) {
        double salary = monthlySalary;
        if (month == getBirthMonth()) {
            salary += 100;
        }
        return salary;
    }
}

public class HourlyEmployee extends Employee {
    private double hourlySalary;
    private int monthlyWorkHours;

    public HourlyEmployee(String name, int birthMonth, double hourlySalary, int monthlyWorkHours) {
        super(name, birthMonth);
        this.hourlySalary = hourlySalary;
        this.monthlyWorkHours = monthlyWorkHours;
    }

    public double getHourlySalary() {
        return hourlySalary;
    }

    public int getMonthlyWorkHours() {
        return monthlyWorkHours;
    }

    @Override
    public double getSalary(int month) {
        double salary = hourlySalary * monthlyWorkHours;
        if (monthlyWorkHours > 160) {
            salary += hourlySalary * 1.5 * (monthlyWorkHours - 160);
        }
        if (month == getBirthMonth()) {
            salary += 100;
        }
        return salary;
    }
}

public class SalesEmployee extends Employee {
    private double monthlySales;
    private double commissionRate;

    public SalesEmployee(String name, int birthMonth, double monthlySales, double commissionRate) {
        super(name, birthMonth);
        this.monthlySales = monthlySales;
        this.commissionRate = commissionRate;
    }

    public double getMonthlySales() {
        return monthlySales;
    }

    public double getCommissionRate() {
        return commissionRate;
    }

    @Override
    public double getSalary(int month) {
        double salary = monthlySales * commissionRate;
        if (month == getBirthMonth()) {
            salary += 100;
        }
        return salary;
    }
}

public class BasePlusSalesEmployee extends SalesEmployee {
    private double baseSalary;

    public BasePlusSalesEmployee(String name, int birthMonth, double monthlySales, double commissionRate, double baseSalary) {
        super(name, birthMonth, monthlySales, commissionRate);
        this.baseSalary = baseSalary;
    }

    public double getBaseSalary() {
        return baseSalary;
    }

    @Override
    public double getSalary(int month) {
        double salary = super.getSalary(month) + baseSalary;
        if (month == getBirthMonth()) {
            salary += 100;
        }
        return salary;
    }
}

接下来，我们可以创建一个Employee数组，将各种类型的员工对象存储在数组中，然后打印出每个员工在某个月的工资：

public class Test {
    public static void main(String[] args) {
        Employee[] employees = new Employee[] {
                new SalariedEmployee("Alice", 1, 5000),
                new HourlyEmployee("Bob", 2, 20, 180),
                new SalesEmployee("Charlie", 3, 10000, 0.1),
                new BasePlusSalesEmployee("David", 4, 8000, 0.15, 2000)
        };

        int month = 5;
        for (Employee employee : employees) {
            System.out.println(employee.getName() + "'s salary in month " + month + " is " + employee.getSalary(month));
        }
    }
}

上述代码中，我们创建了一个包含四种不同类型员工的Employee数组，并且打印了每个员工在第5个月的工资。