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Java code:
class Temp{
public static void main(String args[]){
B b = new B();
b.A();
}
}
class A{
int age = 15;
public A(){
System.out.println(age);
}
}
class B extends A{
String name;
public void A(){
System.out.println("--------------");
}
}
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class Card
{
private int number;//񅧏
private String name;//ÐÕÃû
private String sex;//ÐÔ±ð
private int dateOfBirth;//³öÉúÄêÔÂ
public Card()//Õâ¾ÍÊÇÎÞ²ÎÊýµÄ¹¹Ôì·½·¨
{
number = 0;
name = "Not n
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