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javaÌ⣡

Java code:
package f;

public class TestStudent {

public static void main(String[] args) {
Student s1 = new Student();//´´½¨¸¸Àà¶ÔÏó
Xue x1 = new Xue();//´´½¨×ÓÀà¶ÔÏó;
s1.Set("ÕÅÈý ", "ÄÐ ");
s1.Set(18);
s1.Set(88.8);
System.out.println(s1.Info());
x1.Set("ÀîËÄ ","ÄÐ ");
x1.Set("³øÊ¦");
x1.Set(18);
x1.Set(99.9);
System.out.println(x1.Info());
Student s2 = new Xue();
s2.Set("СÍõ","Å®");
s2.Set(26);
s2.Set(33.3);
}
}
class Student{ //¸¸Àà
String name;
String xingbie;
int age;
double chengji;

public void Set(String name,String xingbie){
this.name = name;
this.xingbie = xingbie;
}

public void Set(int age){
this.age = age;
}
public void Set(double chengji){
this.chengji = chengji;
}

public String GetName(){
return name;
}
public String GetXingBie(){
return xingbie;
}
public int GetAge(){
return age;
}
public double GetChengJi(){
return chengji;
}
public String Info(){
return "Ãû×Ö:" + name + "ÐÔ±ð:" + xingbie + "ÄêÁä:" + " " + age + " " + "³É¼¨:" + chengji;
}
}
class Xue extends Student{ //×ÓÀà ¼¯³ÉÁ˸¸Àà
String zhiwu;
public void Set(String zhiwu){
this.zhiwu = zhiwu;
}
public String GetZhiWu()


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