JAVA第9次作业

1.

public class Hestia1 {
    public static void main(String[] args) {
        System.out.println("请输入一个整数：");
        Scanner sc = new Scanner(System.in);
        int a=sc.nextInt();
        if(ss(a)==true){
            System.out.println(a+"是素数");
        }else{
            System.out.println(a+"不是素数");
        }
    }


    public static boolean ss(int a){
        for(int i=2;i<a;i++){
            if(a%i==0){
                return false;
            }
        }
        return true;
    }
}

2.

public class Student {
    private String name;
    private String stuId;
    private String department;
    private int score;

    public String getName() {
        return name;
    }

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

    public String getStuId() {
        return stuId;
    }

    public void setStuId(String stuId) {
        this.stuId = stuId;
    }

    public String getDepartment() {
        return department;
    }

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

    public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }

    public Student(String name, String stuId, String department, int score) {
        this.name = name;
        this.stuId = stuId;
        this.department = department;
        this.score = score;
    }

    public Student() {}
    public String toString() {
        return this.name+","+this.stuId+","+this.department+","+this.score;
    }
    public boolean equals(Student s) {
        if(this.score>s.score){
        return true;
        }
        return false;
    }
}

3.

public class StudentTest {
    public static void main(String[] args){
        Student s1=new Student("Hestia","001","数信系",90);
        Student s2=new Student("Arona","002","数信系",85);
        max(s1,s2);
    }


    public static void max(Student s1,Student s2){
        if(s1.equals(s2)){
            System.out.println("成绩较好的是：");
            System.out.println(s1.toString());
        }else{
            System.out.println("成绩较好的是：");
            System.out.println(s2.toString());
        }
    }
}