java题目编写代码 java编程题目

用JAVA编写一个程序，要求如下：

实现代码如下：

Student类：

public class Student {

private String name;

private String sex;

private int age;

private double chinese;

private double math;

private double english;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getSex() {

return sex;

}

public void setSex(String sex) {

this.sex = sex;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public double getChinese() {

return chinese;

}

public void setChinese(double chinese) {

this.chinese = chinese;

}

public double getMath() {

return math;

}

public void setMath(double math) {

this.math = math;

}

public double getEnglish() {

return english;

}

public void setEnglish(double english) {

this.english = english;

}

}

-----------------------------------------------------------------

StudentTest类：（测试类）

import java.util.Scanner;

public class StudentTest {

public static void main(String[] args) {

Student student = new Student();

Scanner sc = new Scanner(System.in);

System.out.println("请输入姓名：");

student.setName(sc.next());

System.out.println("请输入性别：");

student.setSex(sc.next());

System.out.println("请输入年龄：");

student.setAge(sc.nextInt());

System.out.println("请输入语文成绩、数学成绩、英语成绩：");

student.setChinese(sc.nextDouble());

student.setMath(sc.nextDouble());

student.setEnglish(sc.nextDouble());

Double count = student.getChinese()+ student.getMath()+student.getEnglish();

System.out.println("姓名："+student.getName()+" 性别："+student.getSex()+" 年龄："+student.getAge());

System.out.println("总分："+count+" 平均分："+count/3);

}

}

运行结果为：

Java题目：请任意输入一个整数，如12345，将其颠倒输出为54321。 该如何编写相应的代码？

代码如下java题目编写代码：

public class App {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

int number = scanner.nextInt();

int result = 0;

while (number % 10 != 0) {

result = result * 10 + number % 10;

number /= 10;

}

System.out.println(result);

}

}

运行结果java题目编写代码：

根据以下任务要求，编写Java应用程序？

按照题目要求编写的Java程序如下

注意 请使用你的真实姓名和班级替换Test类中

创建Student对象stu时用的"张三"和"20计算机应用01班"

import java.util.Scanner;

class Student{

 private String name,classname;

 private int starnum,scorenum;

 private int[] scores;

 public void setStarNum(int n){

  this.starnum=n;

 }

 public Student(String name,String classname,int scorenum){

  this.name=name;

  this.classname=classname;

  this.scorenum=scorenum;

 }

 public String getName(){

  return this.name;

 }

 public void printStar(){

  for(int i=0;istarnum;i++){

   for(int j=0;j2*i+1;j++){

    System.out.print("*");

   }

   System.out.println();

  }

 }

 public void setScore(){

  Scanner sc=new Scanner(System.in);

  scores=new int[scorenum];

  System.out.print("请输入各科成绩：");

  for(int i=0;iscorenum;i++){

   scores[i]=sc.nextInt();

  }

 }

 public void showInfo(){

  System.out.print(name+"同学，你所在的班级是"+classname+"，你各科考试成绩分别为：");

  for(int i=0;iscorenum;i++){

   if(i==scorenum-1)

    System.out.print(scores[i]);

   else

    System.out.print(scores[i]+"，");

  }

  System.out.println();

 }

 public float getAvg(){

  float sum=0;

  for(int i=0;iscorenum;i++){

   sum=sum+scores[i];

  }

  return sum/scorenum;

 }

}

public class Test{

 public static void main(String[] args){

  Student stu=new Student("张三","20计算机应用01班",5);

  stu.setStarNum(4);

  stu.printStar();

  stu.setScore();

  stu.showInfo();

  if(stu.getAvg()60){

   System.out.println(stu.getName()+"是不合格学生");

  }else{

   System.out.println(stu.getName()+"是个合格学生");

  }

 }

}

这两道题代码怎么写java？

创建一个名字为“ReportCard”的类，然后用下边的内容全部替换掉，你会成为全班最亮的仔。

import java.util.HashMap;

/**

* 学生成绩单

*/

public class ReportCard {

public static void main(String[] args) {

ReportCard reportCard = new ReportCard("张三", "070602213");

reportCard.set("语文", 80.0);

reportCard.set("数学", 59.5);

reportCard.set("英语", 66.0);

reportCard.set("java", 80, 99.0);

reportCard.set("数据库", 80, 66.0);

reportCard.set("毛概", null);

System.out.println(reportCard.getStudentName() + "语文分数:" + reportCard.get("语文"));

System.out.println(reportCard.getStudentName() + "数学考核结果:" + (reportCard.isPassed("数学") ? "合格" : "不合格"));

System.out.println(reportCard.getStudentName() + "期末是否挂科：" + (reportCard.isAllPassed() ? "否" : "是"));

}

// 学生姓名

private String studentName;

// 学生学号

private String studentNumber;

// 成绩单

private HashMapString, CourseResult cards = new HashMap();

public ReportCard() {

}

public ReportCard(String studentName, String studentNumber) {

this.studentName = studentName;

this.studentNumber = studentNumber;

}

public Double get(String courseName){

CourseResult courseResult = cards.get(courseName);

return courseResult == null ? Double.NaN : courseResult.getStudentScore();

}

public void set(String courseName, Double studentScore){

CourseResult courseResult = new CourseResult(courseName, studentScore);

cards.put(courseName, courseResult);

}

public void set(String courseName, double passMark, Double studentScore){

CourseResult courseResult = new CourseResult(courseName, passMark, studentScore);

cards.put(courseName, courseResult);

}

public boolean isPassed(String courseName){

return cards.get(courseName).isPassed();

}

public boolean isAllPassed(){

for(CourseResult cr : cards.values()){

if ( ! cr.isPassed()) {

return false;

}

}

return true;

}

public String getStudentName() {

return studentName;

}

public String getStudentNumber() {

return studentNumber;

}

public void setStudentName(String studentName) {

this.studentName = studentName;

}

public void setStudentNumber(String studentNumber) {

this.studentNumber = studentNumber;

}

/**

* 课程

*/

class Course{

// 课程名称

protected String courseName;

// 及格分

protected double passMark = 60;

public Course(String courseName, Double passMark) {

this.courseName = courseName;

if ( passMark != null) {

this.passMark = passMark;

}

}

}

/**

* 课程成绩

*/

class CourseResult extends Course{

// 学生成绩

private Double studentScore;

public CourseResult(String courseName, Double studentScore) {

this(courseName, null, studentScore);

}

public CourseResult(String courseName, Double passMark, Double studentScore) {

super(courseName, passMark);

this.studentScore = studentScore == null ? Double.NaN : studentScore;

}

public boolean isPassed(){

return studentScore = passMark;

}

public String getCourseName() {

return courseName;

}

public double getPassMark() {

return passMark;

}

public Double getStudentScore() {

return studentScore;

}

}

java练习题求完整代码

按照题目要求编写的用javaBean规范设计的学生类Student的Java程序如下

需要创建user.java.test包,把Student.java文件和Test.java文件放入包中,编译Student.java文件并且编译运行Test.java文件得到运行结果

Student.java文件代码如下

package user.java.test;

import java.io.Serializable;

public class Student implements Serializable{

private static final long serialVersionUID = 1L;

private String no;

private String name;

private double score;

public Student(){}

public Student(String no,String name,double score){

this.no=no;

this.name=name;

this.score=score;

}

public String getNo(){ return no;}

public void setNo(String no){ this.no=no;}

public String getName(){ return name;}

public void setName(String name){ this.name=name;}

public double getScore(){ return score;}

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

public String toString(){

return "学号:"+no+",姓名:"+name+",成绩:"+score;

}

public static double getAvg(Student[] sArray){

double sum=0,avg;

for(int i=0;isArray.length;i++){

sum=sum+sArray[i].getScore();

}

avg=sum/sArray.length;

return avg;

}

}

Test.java文件代码如下

package user.java.test;

public class Test{

public static void main(String[] args){

Student[] sArray=new Student[5];

sArray[0]=new Student("001","张三",89.5);

sArray[1]=new Student("002","李四",82.5);

sArray[2]=new Student("003","王五",93);

sArray[3]=new Student("004","赵六",73.5);

sArray[4]=new Student("005","孙七",66);

System.out.println("这些学生的平均分:"+Student.getAvg(sArray));

for(int i=0;isArray.length;i++){

System.out.println(sArray[i].toString());

}

}

}

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