Question

java写一个关于人，教师，学生的类。要求定义静态数据域，用继承方法写。最后编写一个主类来测试这三个类

Answer 1

public class test {
public static void main(String[] args) {
System.out.println(new Person("p"));
System.out.println(new Teacher("t","教书"));
System.out.println(new Student("s","学习"));
}

}
class Person{
public static String name;

Person(){ }
Person(String name){
setName(name);
}

public String getName() {
return name;
}

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

public String toString(){
return getName();
}

}

class Teacher extends Person{
public static String action ;

Teacher(String name,String action) {
this.setName(name);
this.setAction(action);
}

public static String getAction() {
return action;
}

public static void setAction(String action) {
Teacher.action = action;
}

public String toString(){
return getName()+getAction();
}
}

class Student extends Person{

public static String action ;

Student(String name,String action) {
this.setName(name);
this.setAction(action);
}

public static String getAction() {
return action;
}

public static void setAction(String action) {
Student.action = action;
}

public String toString(){
return getName()+getAction();
}
}

Answer 2

public class Test {
public static void main(String args[]){

System.out.println(Person.className);
System.out.println(Teacher.className);
System.out.println(Student.className);
}
}

class Person{
public static String className = "人类";

}
class Teacher extends Person{
public static String className = "老师";
}
class Student extends Person{
public static String className = "学生";
}

Answer 3

..这种简单的入门题...还是可以自己想出来的..