04、分析以下需求并完成代码 阅读代码通过自然排序完成：按照语文成绩升序排列语文成绩相同则按继续比英语成绩 将自然排序相关代码注释然后通过比较器排序完成：按照年龄升序排列年龄相同比姓名 遍历集合打印对象属性查看结果public class Demo04 private static Student stus = new Student6; s
import java.util.Arrays; import java.util.Comparator;
public class Demo04 { private static Student[] stus = new Student[6];
static {
stus[0] = new Student("zhangsan", 17, 99, 77);
stus[1] = new Student("lisi", 21, 85, 86);
stus[2] = new Student("wangwu", 20, 75, 94);
stus[3] = new Student("zhaoliu", 17, 75, 95);
stus[4] = new Student("qianqi", 19, 66, 44);
stus[5] = new Student("yanzu", 18, 75, 86);
}
public static void main(String[] args) {
//3、通过比较器排序完成：按照年龄升序排列,年龄相同比姓名
Arrays.sort(stus, new Comparator<Student>() {
@Override
public int compare(Student o1, Student o2) {
if (o1.getAge() != o2.getAge()) {
return o1.getAge() - o2.getAge();
} else {
return o1.getName().compareTo(o2.getName());
}
}
});
//2、遍历集合,打印对象属性查看结果
for (Student stu : stus) {
System.out.println(stu);
}
}
}
//1、通过自然排序完成：按照语文成绩升序排列,语文成绩相同,则按继续比英语成绩（注释掉再写比较器排序）
//class Student implements Comparable
class Student{ private String name; private int age; private int chinese; private int english;
public Student() {
}
public Student(String name, int age, int chinese, int english) {
this.name = name;
this.age = age;
this.chinese = chinese;
this.english = english;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public int getChinese() {
return chinese;
}
public void setChinese(int chinese) {
this.chinese = chinese;
}
public int getEnglish() {
return english;
}
public void setEnglish(int english) {
this.english = english;
}
@Override
public String toString() {
return "Student{" +
"name='" + name + '\'' +
", age=" + age +
", chinese=" + chinese +
", english=" + english +
'}';
}
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