public class Key { 
private long id1； 
private long 1d2； 
// class Key methods 
} 
A programmer is developing a class Key， that will be used as a key in a standard java.util.HashMap. Which two methods should be overridden to assure that Key works correctly as a key？（）

public class Person { 
private String name， comment； 
private int age； 
public Person（String n， int a， String c） { 
name = n； age = a； comment = c； 
} 
public boolean equals（Object o） { 
if（! （o instanceof Person）） return false； 
Person p = （Person）o； 
return age == p.age && name.equals（p.name）； 
} 
} 
What is the appropriate definition of the hashCode method in class Person？（） 

public class Score implements Comparable { 
private int wins， losses； 
public Score（int w， int 1） { wins = w； losses = 1； } 
public int getWins（） { return wins； } 
public int getLosses（） { return losses； } 
public String toString（） { 
return “<“ + wins + “，“ + losses + “>”；
} 
// insert code here 
} 
Which method will complete this class？（）