帮忙做道题目,顺便解释下..谢谢..
public class Person{
private String name;
public Person(String name){this.name = name;}
public boolean equals(Person p){
return p.name.equals(this.name);
}
}
Which statement is true?
A. The equals method does NOT properly override the Object.equals method.
B. Compilation fails because the private attribute p.name cannot be accessed in line 5.
C. To work correctly with hash-based data structures, this class must also implement the
hashCode method.
D. When adding Person objects to java.util. Set collection, the equals method in line 4 will prevent duplicates.
------解决方案--------------------自己拿来试撒
------解决方案--------------------答案是A