xem giup minh bai tap nay voi a

•Create class employee(name, age, job is string,salary,department)

•Build a program to enter 5 employee for the company then show the info to console.

If employee job is ‘developer’ will put department is ‘development’

package lab2;

import java.util.ArrayList;
import java.util.Scanner;

public class Employee {
 
 String name , job ,salary, department;
 
 int age ;

 public Employee() {
  


 }

 public Employee(String name, String job, String salary, String department, int age) {
  super();
  this.name = name;
  this.job = job;
  this.salary = salary;
  this.department = department;
  this.age = age;
 }

 public String getName() {
  return name;
 }

 public void setName(String name) {
  this.name = name;
 }

 public String getJob() {
  return job;
 }

 public void setJob(String job) {
  this.job = job;
 }

 public String getSalary() {
  return salary;
 }

 public void setSalary(String salary) {
  this.salary = salary;
 }

 public String getDepartment() {
  return department;
 }

 public void setDepartment(String department) {
  this.department = department;
 }

 public int getAge() {
  return age;
 }

 public void setAge(int age) {
  this.age = age;
 }
 
 public static void main(String[] args) {
  
  Scanner scanner = new Scanner(System.in);
  
  ArrayList<Employee> employees = new ArrayList<>();
  
  for(int i =0 ; i < 5 ; i++) {
   Employee employee = new Employee();
   System.out.println("Nhap vao nhan vien" + i +1);
   System.out.println("Nhap tuoi");
   employee.age =scanner.nextInt();
   scanner.nextLine();
   System.out.println("Nhap ten");
   employee.name =scanner.nextLine();
   
   System.out.println("Nhap job");
   employee.job =scanner.nextLine();

   if(employee.job =="tester") {
    
    employee.setDepartment("QA");
  
  
   }  
   System.out.println("Nhap salary");
   employee.salary =scanner.nextLine();
          
   
   
   employees.add(employee); 
   
  }
  for(int i1 =0 ; i1 < 5 ; i1++) {
   System.out.println("nhan vien" + i1 +1 + "co name :" + employees.get(i1).name + " age : 
"+ employees.get(i1).age + "job : " + employees.get(i1).job + 
" department : " + employees.get(i1).department);
   
   
  }
  
  
  
  
 }


}

cai department nó bằng null , ai giúp mình với