如何从员工名单中打印特定月份入职的员工名单？

Question

如何从员工名单中打印特定月份入职的员工名单？您好，我正在尝试打印假设“六月”加入的员工名单？下面是我的代码，Pojo 类：-import java.time.LocalDate;public class Employee {    private String name;    private String empID;    private Designation designation;    private LocalDate dateOfJoining;    private int monthlySalary;    public Employee(String name, String empID, Designation designation, LocalDate dateOfJoining, int monthlySalary) {        super();        this.name = name;        this.empID = empID;        this.designation = designation;        this.dateOfJoining = dateOfJoining;        this.monthlySalary = monthlySalary;    }    public Employee() {    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getEmpID() {        return empID;    }    public void setEmpID(String empID) {        this.empID = empID;    }    public Designation getDesignation() {        return designation;    }    public void setDesignation(Designation designation) {        this.designation = designation;    }    public LocalDate getDOJ() {        return dateOfJoining;    }    public void setDOJ(LocalDate dOJ) {        dateOfJoining = dOJ;    }    public int getMonthlySalary() {        return monthlySalary;    }    public void setMonthlySalary(int monthlySalary) {        this.monthlySalary = monthlySalary;    }    @Override    public int hashCode() {        final int prime = 31;        int result = 1;        result = prime * result + ((dateOfJoining == null) ? 0 : dateOfJoining.hashCode());        result = prime * result + ((designation == null) ? 0 : designation.hashCode());        result = prime * result + ((empID == null) ? 0 : empID.hashCode());        result = prime * result + monthlySalary;        result = prime * result + ((name == null) ? 0 : name.hashCode());        return result;    }我为加入详细信息的日期创建了一个单独的类。

Answer 1

如果您只想打印 6 月份加入的员工姓名：

listofemployee.stream().filter(employee->employee.getDOJ().getMonth().equals(Month.JUNE)).map(employee.getName()).forEach(System.out::println);

Answer 2

   for (Employee employee : listofemployee) {

        LocalDate key = employee.getDOJ();

        String value = employee.getName();

        if (key.getMonthValue() == 06) {

            hashmap.put(key, value);

        }

    }

    System.out.println(hashmap);

但这在重复的情况下不起作用

Answer 3

    for(Employee employee: listofemployee) 

    {

        LocalDate key = employee.getDOJ();

        String value = employee.getName();

        if(key.getMonth() == 6 )

         {

            hashMap.put(key, value); //if the date of joining is same day and time it would replace, as map dont share dups.

          }

     }