java创建学生类,包含学号,姓名,成绩等成员变量及其对应方法
java创建学生类,包含学号,姓名,成绩等成员变量及其对应方法,通过键盘输入若干个学生的信息,直到输入#号后结束输入,按成绩从低到高输出学生对象信息...
java创建学生类,包含学号,姓名,成绩等成员变量及其对应方法,通过键盘输入若干个学生的信息,直到输入#号后结束输入,按成绩从低到高输出学生对象信息
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package com.baidu;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;
public class Student {
private String id;
private String name;
private float score;
public Student(){
this("", "", 0.0f);
}
public Student(String id, String name, float score){
this.id = id;
this.name = name;
this.score = score;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public float getScore() {
return score;
}
public void setScore(float score) {
this.score = score;
}
@Override
public String toString() {
return "Student [id=" + id + ", name=" + name + ", score=" + score
+ "]";
}
public static void main(String[] args) {
List<Student> student = new ArrayList<Student>();
Scanner in = new Scanner(System.in);
System.out.println("Please input the id name and score");
System.out.println("if you want to end of input just input #");
String temp = in.nextLine();
while (!temp.equals("#")){
Student stu = new Student();
stu.setId(temp);
stu.setName(in.nextLine());
stu.setScore(Float.valueOf(in.nextLine()));
student.add(stu);
temp = in.nextLine();
}
Collections.sort(student, new Comparator<Student>(){
@Override
public int compare(Student o1, Student o2) {
if (o1.getScore() > o2.getScore()){
return 1;
} else if(o1.getScore() < o2.getScore()){
return -1;
} else {
return 0;
}
}
});
for (Student a : student){
System.out.println(a);
}
if (null != in){
in.close();
}
}
}
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