Java编写代码：写一个Person类，包含name、age、sex属性，再写一个Student类继承Person类，增加School？

代码如下

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public class Testa { public static void main(String[] args){ Student student = new Student("张三",19,"男","清华大学"); }}class Person{ String name; int age; String sex; public Person(){ } public Person(String name,int age,String sex){ this.name = name; this.age = age; this.sex = sex; }}class Student extends Person{ String school; public Student(String name,int age,String sex,String school){ super(name, age, sex); this.school = school; }}

根据以下的设计要求编写源代码。java

class Student{

private String name;

private int age;

public Student(){

this.name = "nobody";

this.age =20;

}

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 boolean isSameAge(Student s){

return age == s.age;

}    

}

编写一个java类People.java 如下属性name(String类型),age(int类型),addr(String类型),phone(int) 求代码

public class Person {

String name;

int age;

String addr;

int phone;

public Person() {

super();

}

public Person(String name, int age, String addr, int phone) {

super();

this.name = name;

this.age = age;

this.addr = addr;

this.phone = phone;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public String getAddr() {

return addr;

}

public void setAddr(String addr) {

this.addr = addr;

}

public int getPhone() {

return phone;

}

public void setPhone(int phone) {

this.phone = phone;

}

@Override

public String toString() {

return "Person [name=" + name + ", age=" + age + ", addr=" + addr

+ ", phone=" + phone + "]";

}

}

高分求两个简单的JAVA设计源代码

上面 wuzhikun12同学写的不错，但我想还不能运行，并且还不太完善。我给个能运行的：（注意：文件名为：Test.java)

//要实现对象间的比较，就必须实现Comparable接口，它里面有个compareTo方法

//Comparable最好使用泛型，这样，无论是速度还是代码量都会减少

@SuppressWarnings("unchecked")

class Student implements ComparableStudent{

private String studentNo; //学号

private String studentName; //姓名

private double englishScore; //英语成绩

private double computerScore; //计算机成绩

private double mathScore; //数学成绩

private double totalScore; //总成绩

//空构造函数

public Student() {}

//构造函数

public Student(String studentNo,String studentName,double englishSocre,double computerScore,double mathScore) {

this.studentNo = studentNo;

this.studentName = studentName;

this.englishScore = englishSocre;

this.computerScore = computerScore;

this.mathScore = mathScore;

}

//计算总成绩

public double sum() {

this.totalScore = englishScore+computerScore+mathScore;

return totalScore;

}

//计算评测成绩

public double testScore() {

return sum()/3;

}

//实现compareTO方法

@Override

public int compareTo(Student student) {

double studentTotal = student.getTotalScore();

return totalScore==studentTotal?0:(totalScorestudentTotal?1:-1);

}

//重写toString方法

public String toString(){

return "学号："+this.getStudentNo()+" 姓名："+this.getStudentName()+" 英语成绩："+this.getEnglishScore()+" 数学成绩："+this.getMathScore()+" 计算机成绩："+this.getComputerScore()+" 总成绩："+this.getTotalScore();

}

//重写equals方法

public boolean equals(Object obj) {

if(obj == null){

return false;

}

if(!(obj instanceof Student)){

return false;

}

Student student = (Student)obj;

if(this.studentNo.equals(student.getStudentName())) { //照现实来说，比较是不是同一个学生，应该只是看他的学号是不是相同

return true;

} else {

return false;

}

}

/*以下为get和set方法，我个人认为，totalScore的set的方法没必要要，因为它是由其它成绩计算出来的

在set方法中，没设置一次值，调用一次sum方法，即重新计算总成绩

*/

public String getStudentNo() {

return studentNo;

}

public void setStudentNo(String studentNo) {

this.studentNo = studentNo;

sum();

}

public String getStudentName() {

return studentName;

}

public void setStudentName(String studentName) {

this.studentName = studentName;

sum();

}

public double getEnglishScore() {

return englishScore;

}

public void setEnglishScore(double englishScore) {

this.englishScore = englishScore;

sum();

}

public double getComputerScore() {

return computerScore;

}

public void setComputerScore(double computerScore) {

this.computerScore = computerScore;

sum();

}

public double getMathScore() {

return mathScore;

}

public void setMathScore(double mathScore) {

this.mathScore = mathScore;

sum();

}

public double getTotalScore() {

return totalScore;

}

}

//Student子类学习委员类的实现

class StudentXW extends Student {

//重写父类Student的testScore()方法

@Override

public double testScore() {

return sum()/3+3;

}

public StudentXW() {}

//StudentXW的构造函数

public StudentXW(String studentNo,String studentName,double englishSocre,double computerScore,double mathScore) {

super(studentNo,studentName,englishSocre,computerScore,mathScore);

}

}

//Student子类班长类的实现

class StudentBZ extends Student {

//重写父类Student的testScore()方法

@Override

public double testScore() {

return sum()/3+5;

}

public StudentBZ() {}

//StudentXW的构造函数

public StudentBZ(String studentNo,String studentName,double englishSocre,double computerScore,double mathScore) {

super(studentNo,studentName,englishSocre,computerScore,mathScore);

}

}

//测试类

public class Test {

public static void main(String[] args) {

//生成若干个student类、StudentXW类、StudentBZ类

Student student1 = new Student("s001","张三",70.5,50,88.5);

Student student2 = new Student("s002","李四",88,65,88.5);

Student student3 = new Student("s003","王五",67,77,90);

StudentXW student4 = new StudentXW("s004","李六",99,88,99.5);

StudentBZ student5 = new StudentBZ("s005","朱漆",56,65.6,43.5);

Student[] students = {student1,student2,student3,student4,student5};

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

double avgScore = students[i].testScore();

System.out.println(students[i].getStudentName()+"学生的评测成绩为："+ avgScore+"分");

}

}

}

运行结果为：

张三学生的评测成绩为：69.66666666666667分

李四学生的评测成绩为：80.5分

王五学生的评测成绩为：78.0分

李六学生的评测成绩为：98.5分

朱漆学生的评测成绩为：60.03333333333333分

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