java 怎么在这下面的程序中学校判断学生的男生和女生各有多少名啊 好难

Question

import java.util.ArrayList;

public class App {
    public static void main(String[] args) {
        School school=new School("龙岗五联","深圳技师学院","123456789");
        Banji class1=new Banji("1班","20180901","20220901");
        Banji class2=new Banji("2班","20180901","20220901");
        Banji class3=new Banji("3班","20180901","20220901");
        Student s1=new Student("学生1",1,"123456789",18);
        Student s2=new Student("学生2",2,"2457878989",18);
        Student s3=new Student("学生3",1,"5678456543",18);
        Student s4=new Student("学生4",2,"10086666666",18);
        Student s5=new Student("学生5",1,"24578654689",18);
        Student s6=new Student("学生6",2,"12589468467",18);
        Student s7=new Student("学生7",1,"13854268765",18);
        Student s8=new Student("学生8",2,"13864568745",18);
        Student s9=new Student("学生9",1,"15886478687",18);
        Student s10=new Student("学生10",2,"7568745687",18);

        ArrayList<Banji> teamplist = new ArrayList<Banji>();
        teamplist.add(class1);
        teamplist.add(class2);
        teamplist.add(class3);
        school.setBanlist(teamplist);


        ArrayList<Student> stlist1 = new ArrayList<Student>();
        stlist1.add(s1);
        stlist1.add(s2);
        stlist1.add(s3);
        class1.setStudentlist(stlist1);

        ArrayList<Student> stlist2 = new ArrayList<Student>();
        stlist2.add(s4);
        stlist2.add(s5);
        stlist2.add(s6);
        class2.setStudentlist(stlist2);

        ArrayList<Student> stlist3 = new ArrayList<Student>();
        stlist3.add(s7);
        stlist3.add(s8);
        stlist3.add(s9);
        stlist3.add(s10);
        class3.setStudentlist(stlist3);

        int qbrs = 0;
        for (int i=0;i<school.getBanlist().size();i++){
            Banji c1= school.getBanlist().get(i);
            qbrs+=c1.getStudentlist().size();
        }
        if(Student.getsex()==1){
            System.out.println("男");}
        else{
            System.out.println("女");
        }

        System.out.println("学校名是："+school.getName()+"地址是"+school.getAddress()+"电话是："+school.getTel()+"有"+qbrs+"名学生");
    }
}

Answer 1

        Integer peopleNum = 0; // 总人数
        Integer boyNum = 0; // 男生人数
        for(Banji banjiOne:teamplist){
            for(Student studentOne: banjiOne) {
                if(studentOne.sex == 1){
                    boyNum ++;
                }
            }
        }

大概就是这样，女生人数就是总人数-男人数，sex换成你定义的对象属性就可以了