关于java 的
题目如下
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?
A return super.hashCode();
B return name.hashCode() + age * 7;
C return name.hashCode() + comment.hashColde()/2;
D return name.hashCode() + comment.hashColde()/2 - age * 3;
请高手解析一下这道题 答案是B
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