练习：对象得创建和使用

 

 

 

 

 

 

 

 可以搞几个函数替代

public class Object_Array_exce {
    public static void main(String[] args) {
        //创建学生对象
        Student[] students = new Student[20];
        String[] strscore=new String[4];
        strscore[0]="A";
        strscore[1]="B";
        strscore[2]="C";
        strscore[3]="D";

        //学生学号1-20
        for(int i=0;i<students.length;i++){
            students[i]=new Student();
            students[i].number=i+1;
            students[i].state=(int)(Math.random()*6+1);
            students[i].score=strscore[(int)(Math.random()*3+1)];
        }

        for(int i=0;i<students.length;i++){
            System.out.println(students[i]);
        }
    }
}
class Student{
    int number;
    int state;
    String score;
}