用JAVA写一个年度报表的代码

当然！以下是一个简单的JAVA代码示例，用于生成年度报表：

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

public class YearlyReport {

    private ArrayList<Employee> employees;
    private int year;

    public YearlyReport(ArrayList<Employee> employees, int year) {
        this.employees = employees;
        this.year = year;
    }

    public void generateReport() throws IOException {
        File reportFile = new File("YearlyReport_" + year + ".txt");
        FileWriter writer = new FileWriter(reportFile);

        writer.write("Yearly Report for " + year);
        writer.write("\n-----------------------------\n");

        for (Employee employee : employees) {
            writer.write(employee.getName() + "\n");
            writer.write("ID: " + employee.getId() + "\n");
            writer.write("Department: " + employee.getDepartment() + "\n");
            writer.write("Salary for " + year + ": $" + employee.getSalary(year) + "\n");
            writer.write("-----------------------------\n");
        }

        writer.close();
    }
}

class Employee {
    private int id;
    private String name;
    private String department;
    private double[] salaries;

    public Employee(int id, String name, String department, double[] salaries) {
        this.id = id;
        this.name = name;
        this.department = department;
        this.salaries = salaries;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getDepartment() {
        return department;
    }

    public double getSalary(int year) {
        return salaries[year - 2021];
    }
}

class Main {
    public static void main(String[] args) throws IOException {
        ArrayList<Employee> employees = new ArrayList<>();
        double[] salaries1 = {50000.0, 52000.0, 55000.0, 60000.0};
        double[] salaries2 = {60000.0, 64000.0, 68000.0, 72000.0};
        employees.add(new Employee(1, "John", "Sales", salaries1));
        employees.add(new Employee(2, "Mary", "Operations", salaries2));

        YearlyReport yearlyReport = new YearlyReport(employees, 2021);
        yearlyReport.generateReport();
    }
}

在这个示例中，我们定义了一个Employee类表示每个员工，包括id，姓名，部门和他们每年的工资。然后我们定义一个YearlyReport类，接受Employee数组和年份，该类生成一个文本文件，其中包含所有员工的年度报表，包括其姓名，ID，部门和年度薪资。最后，在main函数中，我们创建了一些员工对象，传递给YearlyReport类以生成报告。