菁英科技（卓目鸟学苑）- 专注软件测试菁英教育

标题: java-魏清-20210309 [打印本页]

作者: 5269 时间: 2021-3-9 19:56
标题: java-魏清-20210309
package day03;

import java.util.Arrays;

/*
对象数组、对象参数、可变参数
*/
public class Demo06 {
public static void main(String[] args) {
      //新建三个学生，把学生加入数组
      Students s1 = new Students("Lily", 4);
      Students s2 = new Students("Lucy", 2);
      Students s3 = new Students("lili", 100);
      Students[] ss = {s1, s2, s3};
      System.out.println(Arrays.toString(ss));
      modifyScore(ss);//调用方法,Demo06.mmodifyScore 类名、方法名、方式调用，同一个类名中类名可以省略
      System.out.println(Arrays.toString(ss));

      Students s4 = new Students("jack", 50);
      System.out.println(s4);
      modifyScore(s4);
      System.out.println(s4);

      Students s5 = new Students("jack1", 50);
      Students s6 = new Students("jack1", 50);
      modifyScore1(s5, s6);
      System.out.println(s5);
      System.out.println(s6);
}

//修改学生的分数，如果小于60，将分数提高为60
public static void modifyScore(Students stu) {
      if (stu.score < 60) {
         stu.score = 60;
      }
}

public static void modifyScore(Students[] stu) {
      for (Students s : stu) {
         if (s.score < 60) {
            s.score = 60;
         }
      }
}

//可变参数,当做一个数组来看,可以传入0个、1个、2个...n个学生
public static void modifyScore1(Students... stu) {
      for (Students s : stu) {
         if (s.score < 60) {
            s.score = 60;
         }
      }
}
}

class Students {
String name;
float score;

@Override
public String toString() {
      return "Students{" +
            "name='" + name + '\'' +
            ", score=" + score +
            '}';
}

public Students(String name, float score) {
      this.name = name;
      this.score = score;
}
}

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