java编写一个学生类和教师类,Java创建一个学生类[通俗易懂]

第1个回答

2017-10-07

Student.java类:public class Student {

private String name;

private String className;

private String courseName;

private int score;

public Student(){

}

public Student(String name, String className, String courseName, int score) {

this.name = name;

this.className = className;

this.courseName = courseName;

this.score = score;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getClassName() {

return className;

}

public void setClassName(String className) {

this.className = className;

}

public String getCourseName() {

return courseName;

}

public void setCourseName(String courseName) {

this.courseName = courseName;

}

public int getScore() {

return score;

}

public void setScore(int score) {

this.score = score;

}

}

main类:import java.util.ArrayList;

public class StudentMain {

public static void main(String[] args){

//初始化学生信息

Student student1 = new Student(“张三”, “class1”, “Java”, 85);

Student student2 = new Student(“周乐儿”, “class1”, “C#”, 79);

Student student3 = new Student(“王涛”, “class2”, “C#”, 52);

Student student4 = new Student(“李明”, “class2”, “Java”, 48);

ArrayList students = new ArrayList<>();

students.add(student1);

students.add(student2);

students.add(student3);

students.add(student4);

//(1) 请列出所有学生的信息；

System.out.println(“(1) 请列出所有学生的信息；”);

System.out.println(“姓名 班级名 课程名 考试成绩”);

for (Student student : students) {

System.out.println(student.getName() + ” ” + student.getClassName() + ” ” + student.getCourseName() + ” ” +

student.getScore());

}

//(2) 请打印class1班的总分和平均分；

System.out.println(“(2)请打印class1班的总分和平均分；”);

ArrayList class1StudentScore = new ArrayList<>();

int class1StudentTotalScore = 0;

for (Student student : students) {

if (student.getClassName().equals(“class1”)){

class1StudentTotalScore += student.getScore();

class1StudentScore.add(student.getScore());

}

}

System.out.println(“总分：” + class1StudentTotalScore);

System.out.println(“class1平均分：” + averageScore(class1StudentScore));

//(3) 请打印Java、C#课程的平均分。

System.out.println(“(3) 请打印Java、C#课程的平均分。”);

ArrayList javaStudentTotalScore = new ArrayList<>();

ArrayList cSharpStudentTotalScore = new ArrayList<>();

for (Student student : students) {

if (student.getCourseName().equals(“Java”)){

javaStudentTotalScore.add(student.getScore());

}

if (student.getCourseName().equals(“C#”)){

cSharpStudentTotalScore.add(student.getScore());

}

}

System.out.println(“java平均分：” + averageScore(javaStudentTotalScore));

System.out.println(“c#平均分：” + averageScore(cSharpStudentTotalScore));

}

//计算平均分

private static double averageScore(ArrayList list){

double average = 0.0;

for (int i = 0; i 

average += list.get(i) ;

}

//考虑size为0的情况

if (list.size() == 0){

return 0.0;

}

return average/list.size();

}

}

运行结果:

追问

大佬可以给我私信发一下完整代码么？我本人新手，手打老是出错，不知道该怎么改

追答

你给我一个邮箱，私信不能发文件

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第2个回答

2010-03-06

主方法的类:

public class DriverStudent {

public static void main(String[] args){

Student s1 = new Student();

Student s2 = new Student();

float sum1,sum2;

s1.setId(“001”);

s1.setName(“学生甲”);

s1.setScore(70.5f,75.0f,87.0f);

s2.setId(“002”);

s2.setName(“学生乙”);

s2.setScore(89.5f,61.0f,92.0f);

sum1 = s1.getSum();

sum2 = s2.getSum();

if(sum1 > sum2){

System.out.println(s1.getInfo());

}else if(sum1 < sum2){

System.out.println(s2.getInfo());

}else{

System.out.println(“The two students got same sum scores.”+s1.getSum());

System.out.println(s1.getInfo());

System.out.println(s2.getInfo());

}

}

}

———————————————————————–

学生类

public class Student {

private String id;

private String name;

private int size = 3;

private float[] score;

public Student(){

size =3;

score = new float[size];

}

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 a,float b,float c) {

score[0] = a;

score[1] = b;

score[2] = c;

}

public float getSum(){

float sum = 0;

for(int i = 0; i

sum += score[i];

}

return sum;

}

public String getInfo(){

return “ID = “+ id +” Name = ” + name + ” sum =”+ this.getSum();

}

}

本回答被提问者采纳

第3个回答

2010-03-06

public class Train009

{

public static void main(String args[])

{

Student studentA=new Student();

Student studentB=new Student();

Student studentC=new Student();

studentA.name=”A”;

studentA.number=”001″;

studentA.scoreA=97;

studentA.scoreB=93;

studentA.scoreC=93;

studentB.name=”B”;

studentB.number=”002″;

studentB.scoreA=89;

studentB.scoreB=83;

studentB.scoreC=83;

double AllscoreA,AllscoreB;

AllscoreA=studentA.scoreA+studentA.scoreB+studentA.scoreC;

AllscoreB=studentB.scoreA+studentB.scoreB+studentB.scoreC;

if(AllscoreA>AllscoreB)

{

System.out.println(“name:”+studentA.name+”\t”+”number:”+studentA.number+”\t”+”all score:”+AllscoreA);

}

else

System.out.println(“name:”+studentB.name+”\t”+”number:”+studentB.number+”\t”+”all score:”+AllscoreB);

}

}

class Student

{

String name,number;

double scoreA,scoreB,scoreC;

}

本回答被提问者采纳

第4个回答

2010-03-05

//学生类

public class Student{

private String stu_id;

private String stu_name;

private float math;

private float chinese;

private float computer;

public void setStu_id(String stu_id){

this.stu_id=stu_id;

}

public String getStu_id(){

return stu_id;

}

public void setStu_name(String stu_name){

this.stu_name=stu_name;

}

public String getStu_name(){

return stu_name;

}

public void setMath(float math){

this.math=math;

}

public float getMath(){

return math;

}

public void setChinese(float chinese){

this.chinese=chinese;

}

public float getChinese(){

return chinese;

}

public void setComputer(float computer){

this.computer=computer;

}

public float getComputer(){

return computer;

}

}

//主方法的类

public class Start{

public static void main(String[] args){

Student stu1=new Student();

stu1.setStu_id(“No1”);

stu1.setStu_name(“张三”);

stu1.setMath(89.5f);

stu1.setChinese(70f);

stu1.setComputer(98f);

Student stu2=new Student();

stu2.setStu_id(“No2”);

stu2.setStu_name(“李四”);

stu2.setMath(79.5f);

stu2.setChinese(90f);

stu2.setComputer(68f);

float stu1Sum = stu1.getMath()+stu1.getChinese()+stu1.getComputer();

float stu2Sum = stu2.getMath()+stu2.getChinese()+stu2.getComputer();

if(stu1Sum > stu2Sum){

System.out.println (“总分最高分为：”+stu1Sum);

System.out.println (“学号：”+stu1.getStu_id());

System.out.println (“姓名：”+stu1.getStu_name());

System.out.println (“数学：”+stu1.getMath());

System.out.println (“语文：”+stu1.getChinese());

System.out.println (“计算机：”+stu1.getComputer());

}else if(stu1Sum < stu2Sum){

System.out.println (“总分最高分为：”+stu2Sum);

System.out.println (“学号：”+stu2.getStu_id());

System.out.println (“姓名：”+stu2.getStu_name());

System.out.println (“数学：”+stu2.getMath());

System.out.println (“语文：”+stu2.getChinese());

System.out.println (“计算机：”+stu2.getComputer());

}else{

System.out.println (“总分一样高为：”+stu1Sum);

System.out.println (“学号：”+stu1.getStu_id());

System.out.println (“姓名：”+stu1.getStu_name());

System.out.println (“数学：”+stu1.getMath());

System.out.println (“语文：”+stu1.getChinese());

System.out.println (“计算机：”+stu1.getComputer());

System.out.println (“学号：”+stu2.getStu_id());

System.out.println (“姓名：”+stu2.getStu_name());

System.out.println (“数学：”+stu2.getMath());

System.out.println (“语文：”+stu2.getChinese());

System.out.println (“计算机：”+stu2.getComputer());

}

}

}

希望对你有帮助!

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