Cat.java

import java.util.Date;

 

public class Cat{

  private String name;

  private Date birthday;

 

  public Cat(){

  }

 

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

  public String getName(){return name;}

 

  public void setBirthday(Date birthday){this.birthday=birthday;}

  public Date getBirthday(){return birthday;}

 

  public boolean equals(object other){

    if(this==other)

      return true;

 

    if(!(other instanceof Cat))

      return falsel

 

    final Cat cat=(Cat)other;

 

    if(!getName().equals(cat.getName()))

      return false;

 

    if(!getBirthday().equals(cat.getBirthday()))

      return false;

 

    return true;

  }

 

  public int hashCode(){

    int result=getName().hashCode();

    return result;

  }

}