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/**********Customer .java begin***********/
import java.util.HashSet;
import java.util.Set;
/**
* Èç¹ûÁ½¸öCustomer¶ÔÏónamaÊôÐÔºÍageÊôÐÔÏàͬ£¬ÄÇôÕâÁ½¸öCustomer¶ÔÏóÏàµÈ¡£
* @author Administrator
*
*/
public class Customer {
private String name;
private int age;
public String getName() {
return name;
}
public int getAge() {
return age;
}
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
public Customer(String name, int age) {
super();
this.name = name;
this.age = age;
}
public Customer(){}
/**
* Èç¹ûCustomerÀา¸ÇÁËObjectÀàÖеÄequals·½·¨£¬µ«Ã»Óи²¸ÇObjectÖеÄHashCode·½·¨£¬
* ¾Í»áµ¼Öµ±Customer1.equals.(Customer2)Ϊtrueʱ£¬¶øCustomer1ºÍCustomer2µÄ¹þ
* Ï£Âë²»Ò»¶¨Ò»Ñù£¬¾Í»áʹHashSetÎÞ·¨¹¤×÷¡£
*/
@Override
public boolean equals(Object obj) {
if((obj instanceof Customer)){
Customer other=(Customer) obj;
if(this.name.equals(other.getName()) && this.age==other.getAge()) {
return true;
}
}
return false;
}
/**
* ΪÁ˱£Ö¤HashSetµÄÕý³£¹¤×÷£¬Èç¹ûCustomerÀา¸ÇÁËequals·½·¨£¬Í¬Ê±Ò²Ó¦¸ÃÈ¥¸²¸ÇhashCode
* ·½·¨£¬²¢ÇÒ±£Ö¤Á½¸öÏàµÈ¶ÔÏóµÄ¹þÏ£ÂëÒ²ÊÇÒ»Ñù¡£
*/
// @Override
public int hashCode() {
int result;
result=(name==null?0:name.hashCode());
result=result+age;
return result;
}
public static void main(String args[]){
Set set=new HashSet();
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