java控制臺實現學生管理系統
本文實例為大傢分享瞭java控制臺實現學生管理系統的具體代碼，供大傢參考，具體內容如下
編寫一個學生成績管理程序。學生的屬性包括學號、姓名、年齡等。每個學生要學習若幹課程，每門課程有平時成績、期中考試成績、實習成績、期末考試成績以及總評成績等多個成績，其中平時成績的數目不定（因為不同課程的教師佈置的平時作業數不同），而總評成績是其它成績的平均值。請先設計合理的對象容器類存放這些信息，然後設計程序完成以下功能：
1）列出某個學生的所有成績；
2）列出某門課程每個學生的總評成績，及所有學生總評成績的總評分；
3）分區段統計某門課程的學生總評成績，例如60 分以下的學生人數、60 至70 分的學生人數等。
Student類：
package homework032002;
import java.util.ArrayList;
public class Student {
private String name;
private String no;
private int age;
private ArrayList<Grade> Grade;
public ArrayList<Grade> getCourses() {
return Grade;
}
public void setCourses(ArrayList<Grade> Grade) {
this.Grade = Grade;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getNo() {
return no;
}
public void setNo(String no) {
this.no = no;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "Student [name=" + name + ", no=" + no + ", age=" + age + ", course=" + Grade + "]";
}
public Student(String name, String no, int age, ArrayList<Grade> Grade) {
super();
this.name = name;
this.no = no;
this.age = age;
this.Grade = Grade;
}
public Student() {
super();
// TODO Auto-generated constructor stub
}
}
Function類：（功能封裝在此類中）：
package homework032002;
import homework032002.Grade;
import java.util.ArrayList;
public class Function {
//static ArrayList<Grade> arrayList = new ArrayList<>();
//static ArrayList<Student> arrayList2 = new ArrayList<>();
private ArrayList<Student> arrayList2;
public Function(ArrayList<Student> arrayList) {
super();
this.arrayList2 = arrayList;
}
//根據名字搜索該學生的成績
public void show(String name) {
for (Student s : arrayList2) {
if(s.getName().equals(name)) {
ArrayList<Grade> course = s.getCourses();
System.out.println("該學生的成績是：");
for(Grade grade : course) {
System.out.println(grade);
}
break;
}
}
}
//列出某門課程每個學生的總評成績，及所有學生總評成績的總評分
public void showOneSum(String courseName) {
double sumGrade = 0;
int num = 0;
for(Student student : arrayList2) {
ArrayList<Grade> grades = student.getCourses();
for(Grade grade : grades) {
if(courseName.equals(grade.getCourse())) {
num++;
sumGrade += grade.getSumGrade();
System.out.println(student.getName()+"的總評分是"+grade.getSumGrade());
}
}
}
System.out.println("所有學生的總評分是："+sumGrade/num);
}
//分區段統計某門課程的學生總評成績，例如60 分以下的學生人數、60 至70 分的學生人數等
public void selectGrade(String courseName) {
int down60 = 0;
int down60_70 = 0;
for(Student student : arrayList2) {
ArrayList<Grade> grades = student.getCourses();
for(Grade grade : grades) {
if(courseName.equals(grade.getCourse())) {
if(grade.getSumGrade() < 60) {
down60++;
}else if (grade.getSumGrade() > 60 || grade.getSumGrade() <70) {
down60_70++;
}
}
}
}
System.out.println("60分以下的有"+down60+"人");
System.out.println("60-70分以下的有"+down60_70+"人");
}
}
Grade類：（課程類）
package homework032002;
//每門課程有平時成績、期中考試成績、實習成績、期末考試成績以及總評成績等多個成績
public class Grade {
private String course;
private int dailyGrade;
private int midGrade;
private int doGrade;
private int endGrade;
public String getCourse() {
return course;
}
public void setCourse(String course) {
this.course = course;
}
public Grade(String course, int dailyGrade, int midGrade, int doGrade, int endGrade, double sumGrade) {
super();
this.course = course;
this.dailyGrade = dailyGrade;
this.midGrade = midGrade;
this.doGrade = doGrade;
this.endGrade = endGrade;
this.sumGrade = sumGrade;
}
public int getDailyGrade() {
return dailyGrade;
}
public void setDailyGrade(int dailyGrade) {
this.dailyGrade = dailyGrade;
}
private double sumGrade;
public int getMidGrade() {
return midGrade;
}
public void setMidGrade(int midGrade) {
this.midGrade = midGrade;
}
public int getDoGrade() {
return doGrade;
}
public void setDoGrade(int doGrade) {
this.doGrade = doGrade;
}
public int getEndGrade() {
return endGrade;
}
public void setEndGrade(int endGrade) {
this.endGrade = endGrade;
}
public double getSumGrade() {
return sumGrade;
}
public void setSumGrade(double sumGrade) {
this.sumGrade = sumGrade;
}
@Override
public String toString() {
return "Grade [course=" + course + ", dailyGrade=" + dailyGrade + ", midGrade=" + midGrade + ", doGrade="
+ doGrade + ", endGrade=" + endGrade + ", sumGrade=" + sumGrade + "]";
}
}
測試類：
package homework032002;
import java.util.ArrayList;
public class Test {
public static void main(String[] args) {
ArrayList<Student> students = new ArrayList<>();
ArrayList<Grade> grades = new ArrayList<>();
students.add(new Student("小明", "12", 13, grades));
grades.add(new Grade("高數", 50, 95, 45, 78, 76));
grades.add(new Grade("語文", 50, 95, 45, 78, 76));
grades.add(new Grade("英語", 50, 95, 45, 78, 76));
grades.add(new Grade("計算機", 50, 95, 45, 78, 76));
ArrayList<Grade> grades1 = new ArrayList<>();
students.add(new Student("小紅", "12", 13, grades1));
grades1.add(new Grade("高數", 50, 95, 45, 78, 76));
grades1.add(new Grade("語文", 50, 95, 45, 78, 76));
grades1.add(new Grade("英語", 50, 95, 45, 78, 76));
grades1.add(new Grade("計算機", 50, 95, 45, 78, 76));
ArrayList<Grade> grades2 = new ArrayList<>();
students.add(new Student("小上", "12", 13, grades2));
grades2.add(new Grade("高數", 50, 95, 45, 78, 76));
grades2.add(new Grade("語文", 50, 95, 45, 78, 76));
grades2.add(new Grade("英語", 50, 95, 45, 78, 76));
grades2.add(new Grade("計算機", 50, 95, 45, 78, 76));
ArrayList<Grade> grades3 = new ArrayList<>();
students.add(new Student("小藍", "12", 13, grades3));
grades3.add(new Grade("高數", 50, 95, 45, 78, 76));
grades3.add(new Grade("語文", 50, 95, 45, 78, 76));
grades3.add(new Grade("英語", 50, 95, 45, 78, 76));
grades3.add(new Grade("計算機", 50, 95, 45, 78, 76));
Function function = new Function(students);
function.show("小明");
function.showOneSum("計算機");
function.selectGrade("高數");
}}
以上就是本文的全部內容，希望對大傢的學習有所幫助，也希望大傢多多支持WalkonNet。