你可能感興趣的試題

Which two statements are true about the hashCode method？（）

A. The hashCode method for a given class can be used to test for object equality and object inequality for that class.
B. The hashCode method is used by the java.util.SortedSet collection class to order theelements within that set.
C. The hashCode method for a given class can be used to test for object inequality， but NOT object equality， for that class.
D. The only important characteristic of the values returned by a hashCode method is that the distribution of values must follow a Gaussian distribution.
E. The hashCode method is used by the java.util.HashSet collection class to group the elements within that set into hash buckets for swift retrieval.

單項選擇題

1. public class Person {
2. private String name；
3. public Person（String name） { this.name = name； }
4. public boolean equals（Person p） {
5. return p.name.equals（this.name）；
6. }
7. }
Which 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 a java.util.Set collection， the equals method in line 4 will prevent duplicates.

感谢您访问我们的网站，您可能还对以下资源感兴趣：

中文字幕网国产

国产一级特黄a大片亚洲浮力影院久久久久久亚洲第一二三区日韩国产国产精品第不卡国产视频第一页

你可能感興趣的試題

Which two statements are true about the hashCode method？（）

1. public class Person { 2. private String name； 3. public Person（String name） { this.name = name； } 4. public boolean equals（Person p） { 5. return p.name.equals（this.name）； 6. } 7. } Which is true？（）

Which two statements are true about the hashCode method？（）

1. public class Person {
2. private String name；
3. public Person（String name） { this.name = name； }
4. public boolean equals（Person p） {
5. return p.name.equals（this.name）；
6. }
7. }
Which is true？（）