package com.ArrayHashSet.a;
class Person {
private String name;
private int age;
public Person(String name, int age) {
super();
this.name = name;
this.age = age;
}
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;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + age;
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Person other = (Person) obj;
if (age != other.age)
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
return true;
}
@Override
public String toString() {
return "Person [name=" + name + ", age=" + age + "]";
}
}
public class Test {
public static void main(String[] args) {
Collection c = new HashSet();
Person p = new Person("a",12);
Person p2 = new Person("12",97);
Person p3 = new Person("a",12);
Person p4 = new Person("g",12);
c.add(p4);
c.add(p3);
c.add(p2);
c.add(p);
//p2.setAge(2);// p2 ， hashcode ， //
c.remove(p2);
for(Iterator it = c.iterator();it.hasNext();){
System.out.println(it.next().toString());
}
}
}