java 使用面向对象方式实现录入学生信息，取出成绩最大值、最小值、平均值、对其进行排序

题目：

java 使用面向对象方式实现录入学生信息，取出成绩最大值、最小值、平均值、对其进行排序


gitup源码下载地址：

https://github.com/benxiaohai8888/Javase/blob/master/ObjectStudent.java


代码：

import java.util.Scanner;
public class ObjectStudent{
private String name;//姓名
private int age;//年龄
private double score;//分数
//定义全局的变量
private Student[] students;

public void setName(String name){
this.name=name;
}
public String getName(){
return name;
}
public void setAge(int age)
{
this.age=age;
}
public int getAge(){
return age;
}

public void setScore(double score)
{
this.score=score;
}
public double getScore(){
return score;
}

//初始化学生
public void initStudent(){
Scanner scanner=new Scanner(System.in);
students=new Student[3];
System.out.println("--------输入3个学生的信息--------");
int j=1;
for(int i=0;i<students.length;i++){

Student stu=new Student();

System.out.println("输入第["+j+"]个学生的信息:");
System.out.println("姓名:");
stu.setName(scanner.next());

System.out.println("年龄:");
stu.setAge(scanner.nextInt());

System.out.println("分数:");
stu.setScore(scanner.nextDouble());

students[i]=stu;
j++;
}
//打印输出
for(int a=0;a<students.length;a++){
Student stu=students[a];
System.out.println("第["+(a+1)+"]个学生的姓名："+stu.getName());
System.out.println("第["+(a+1)+"]个学生的年龄："+stu.getAge());
System.out.println("第["+(a+1)+"]个学生的分数："+stu.getScore());
System.out.println("----------------------------------------");
}
}

//总分
public double sumScore(){
double sumScore=0.0;
for(int a=0;a<students.length;a++){
Student stu=students[a];
sumScore+=stu.getScore();
}
return sumScore;
}

//平均分
public double avgScore(){
return sumScore()/students.length;
}

//最大值
public double max(){
double max=students[0].getScore();
for(
4000
int a=0;a<students.length;a++){
if(students[a].getScore()>max){
max=students[a].getScore();
}

}
return max;

}
//最大值的学生
public Student maxStudent(){
double max=students[0].getScore();
int index=-1;
for(int a=0;a<students.length;a++){
if(students[a].getScore()>max){
max=students[a].getScore();
index=a;
}

}
return students[index];

}
//最小值
public double min(){
double min=students[0].getScore();
for(int a=0;a<students.length;a++){
if(students[a].getScore()<min){
min=students[a].getScore();
}

}
return min;

}
//最小值的学生
public Student minStudent(){
double min=students[0].getScore();
int index=-1;
for(int a=0;a<students.length;a++){
if(students[a].getScore()<min){
min=students[a].getScore();
index=a;
}else{
min=students[0].getScore();
index=0;
}

}
return students[index];

}
//排序
public void sort(){
Student st=new Student();
for(int i=0;i<students.length-1;i++){
for(int j=i+1;j<students.length-1;j++){
if(students[i].getScore() > students[j].getScore()){
st=students[i];
students[i]=students[j];
students[j]=st;
}
}
}

for(Student s: students){
System.out.print("姓名："+s.getName()+" ");
System.out.print("年龄："+s.getAge()+" ");
System.out.print("分数："+s.getScore()+" ");
System.out.println();
}

}

public static void main(String[] args){
Student stu=new Student();
//初始化学生
stu.initStudent();
//总分
System.out.println("总分： "+stu.sumScore());
//平均分
System.out.println("平均分: "+stu.avgScore());
//分数最大值
System.out.println("最大值: "+stu.max());
//分数最大值的学生信息
System.out.println("分数最大值的学生姓名: "+stu.maxStudent().getName());
//分数最小值
System.out.println("最小值: "+stu.min());
//分数最小值的学生信息
System.out.println("分数最小值的学生姓名: "+stu.minStudent().getName());
//排序
System.out.println("排序结果； ");
stu.sort();

}
}


结果：