死活统计不出市场部的人！！！求帮助。。。。。

Question

package com.student.massage;public class company { //定义部门信息 private String branch; private staff[] staffinfo; private int dutynum; //创建一个带参构造方法 public company(String branch){ this.setBranch(branch); } //从外部获取部门、以及返回部门信息 public String getBranch() { return branch; } public void setBranch(String branch) { this.branch = branch; } public staff[] getStaffinfo() { if(this.staffinfo==null) this.staffinfo=new staff[200]; return staffinfo; } public void setStaffinfo(staff[] staffinfo) { this.staffinfo = staffinfo; } public int getDutynum() { return dutynum; } public void setDutynum(int dutynum) { this.dutynum = dutynum; } public void addduty(staff dep){ int i,j; for(i=0;i<this.getStaffinfo().length;i++){ if(this.getStaffinfo()[i]==null){ this.getStaffinfo()[i]=dep; if(this.getStaffinfo()[i].getDep().getBranch()=="人事部") this.dutynum=i+1; break; } } }}package com.student.massage;public class staff { //定义员工姓名，工号，性别，年龄，职务 private String name; private String num; private String sex; private int age; private String duty; private company Dep; //创建构造方法 public staff(String name,String num,String sex,int age,String duty,company Dep){ this.setName(name); this.setNum(num); this.setSex(sex); this.setAge(age); this.setDuty(duty); this.setDep(Dep); } //从外部依次输入，返回员工信息 public String getName() { return name; } public void setName(String name) { this.name = name; } public String getNum() { return num; } public void setNum(String num) { this.num = num; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getDuty() { return duty; } public void setDuty(String duty) { this.duty = duty; } //引入部门 public company getDep() { return Dep; } public void setDep(company dep) { Dep = dep; } public String str(){ String str="姓名："+this.getName()+"\n工号："+this.getNum()+"\n性别："+this.getSex()+"\n年龄："+this.getAge()+"\n职务："+this.getDep().getBranch()+this.getDuty(); return str; }}package com.student.massage.test;import com.student.massage.*;public class cstest { public static void main(String[] args) { //创建方法，输入部门信息 company dep1=new company("人事部"); company dep2=new company("市场部"); //创建方法，输入员工信息 staff staffinfo1=new staff("张铭","S001","男",29,"经理",dep1); System.out.println(staffinfo1.str()); System.out.println("========================"); staff staffinfo2=new staff("李艾爱","S002","女",21,"助理",dep1); System.out.println(staffinfo2.str()); System.out.println("========================"); staff staffinfo3=new staff("孙超","S003","男",29,"职员",dep1); System.out.println(staffinfo3.str()); System.out.println("========================"); staff staffinfo4=new staff("张美美","S004","女",26,"职员",dep2); System.out.println(staffinfo4.str()); System.out.println("========================"); staff staffinfo5=new staff("蓝迪","S005","男",37,"助理",dep2); System.out.println(staffinfo5.str()); System.out.println("========================"); staff staffinfo6=new staff("米莉","S006","女",24,"职员",dep2); System.out.println(staffinfo6.str()); System.out.println("========================"); dep1.addduty(staffinfo1); dep1.addduty(staffinfo2); dep1.addduty(staffinfo3); dep1.addduty(staffinfo4); dep1.addduty(staffinfo5); dep1.addduty(staffinfo6); System.out.println(dep1.getBranch()+"共有员工"+dep1.getDutynum()+"人"); System.out.println(dep2.getBranch()+"共有员工"+dep2.getDutynum()+"人"); }}

Answer 1

计算部门人数时错了，想想计算部门人数时需要用到哪个对象得哪个参数