网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
set collection遇到重复的元素，处理的方式是（）。
A
试图添加一个重复的元素时，会抛出一个异常
B
试图添加一个重复的元素时，重复元素将不能被加入
C
一个set可以包含重复元素
D
编译的时候，重复的元素会导致错误
参考答案
参考解析
解析：
暂无解析
更多 “单选题set collection遇到重复的元素，处理的方式是（）。A 试图添加一个重复的元素时，会抛出一个异常B 试图添加一个重复的元素时，重复元素将不能被加入C 一个set可以包含重复元素D 编译的时候，重复的元素会导致错误” 相关考题
考题
关于集合，下列叙述错误的是______。A．集合中的对象称为它的元素B．一个集合是代表一组对象的一个对象C．集合主要用于处理各种类型的对象的聚集D．集合包含四个重要接口：Collection、Set、List、Map
考题
下列关于List接口的描述中,错误的是?()
A.List接口继承自Collection接口，是单列集合B.List集合中允许出现重复的元素C.List集合存储元素是有序的，即元素的存入顺序和取出顺序一致D.List集合中所有的元素是以二叉树方式进行存储的
考题
set集合如何处理重复元素
A.如果加入一个重复元素将抛出异常B.如果加入一个重复元素add方法将返回falseC. 集合通过调用equals方法可以返回包含重复值的元素。D. 重复值将导致编译出错。
考题
A（）is a set of procedures or a collection of techniques used in a systematic way which it is hoped will result in efficient learning.
考题
关于Java的集合下面说法错误的是（）A、Collections是针对集合类的一个帮助类。提供了一系列静态方法实现对各种集合的搜索、排序、线程完全化等操作B、Collection没有get（）方法来取得某个元素。只能通过iterator（）遍历元素。C、HashMap会利用对象的hashCode来快速找到key。D、List、Set、Map 都是不允许重复的集合。E、Map中元素，可以将key序列、value序列单独抽取出来。
考题
set collection遇到重复的元素，处理的方式是（）。A、试图添加一个重复的元素时，会抛出一个异常B、试图添加一个重复的元素时，重复元素将不能被加入C、一个set可以包含重复元素D、编译的时候，重复的元素会导致错误
考题
关于集合框架特征，说法不正确的是（）A、Map集合中的键对象不允许重复B、有序List集合中的元素允许重复C、有序Set集合中的元素不允许重复D、无序Collection集合中的元素允许重复、无序
考题
Which of these statements concerning the collection interfaces are true？（） A、Set extends Collection.B、All methods defined in Set are also defined in Collection.C、List extends Collection.D、All methods defined in List are also defined in Collection.E、Map extends Collection.
考题
Initially， for the Automatic Workload Repository （AWR） statistics，the retention period is set to 7 days， the collection interval is set to 30 minutes and the collection level is set to Typical in your production database. You have been using the Memory Advisor for the last three months to generate recommendations for tuning memory components. However，when you observe the Memory Advisor on a Friday，you find that the statistics are available only for two days， Thursday and Friday，of that week. What would have caused the statistics to be removed？（）A、On Wednesday， the statistics have been purged.B、On Wednesday， the retention period has been set to zero.C、On Wednesday， the collection interval has been set to zero.D、On Wednesday， the collection level has been changed to All.E、On Wednesday， the retention period has been set to one day.F、On Wednesday， the retention period has been set to two daysG、On Wednesday, the collection level has been changed to Typical.H、On Wednesday, the collection interval has been set to 1440 minutes.
考题
单选题关于集合框架特征，说法不正确的是（）A
Map集合中的键对象不允许重复B
有序List集合中的元素允许重复C
有序Set集合中的元素不允许重复D
无序Collection集合中的元素允许重复、无序
考题
单选题1. import java.util.*； 2. public class TestSet { 3. enum Example { ONE， TWO， THREE } 4. public static void main（String[] args） { 5. Collection coll = new ArrayList（）； 6. coll.add（Example.THREE）； 7. coll.add（Example.THREE）； 8. coll.add（Example.THREE）； 9. coll.add（Example.TWO）； 10. coll.add（Example.TWO）； 11. coll.add（Example.ONE）； 12. Set set = new HashSet（coll）； 13. } 14. } Which statement is true about the set variable on line 12？（）A
The set variable contains all six elements from the coll collection， and the order is guaranteed to be preserved.B
The set variable contains only three elements from the coll collection， and the order is guaranteed to be preserved.C
The set variable contains all six elements from the coil collection， but the order is NOT guaranteed to be preserved.D
The set variable contains only three elements from the coil collection， but the order is NOT guaranteed to be preserved.
考题
多选题Which of these statements concerning the collection interfaces are true？（）ASet extends Collection.BAll methods defined in Set are also defined in Collection.CList extends Collection.DAll methods defined in List are also defined in Collection.EMap extends Collection.
考题
多选题Oracle JRockit JVM uses -Xns option to set nursery size when the generational garbage collection mode is used. Which two JVM properties are affected by changing its size ？（）Acompaction ratio limitBgarbage collection frequencyCgarbage collection timesDfragmentation heap size
考题
单选题Initially， for the Automatic Workload Repository （AWR） statistics，the retention period is set to 7 days， the collection interval is set to 30 minutes and the collection level is set to Typical in your production database. You have been using the Memory Advisor for the last three months to generate recommendations for tuning memory components. However，when you observe the Memory Advisor on a Friday，you find that the statistics are available only for two days， Thursday and Friday，of that week. What would have caused the statistics to be removed？（）A
On Wednesday， the statistics have been purged.B
On Wednesday， the retention period has been set to zero.C
On Wednesday， the collection interval has been set to zero.D
On Wednesday， the collection level has been changed to All.E
On Wednesday， the retention period has been set to one day.F
On Wednesday， the retention period has been set to two daysG
On Wednesday, the collection level has been changed to Typical.H
On Wednesday, the collection interval has been set to 1440 minutes.
考题
单选题set collection遇到重复的元素，处理的方式是（）。A
试图添加一个重复的元素时，会抛出一个异常B
试图添加一个重复的元素时，重复元素将不能被加入C
一个set可以包含重复元素D
编译的时候，重复的元素会导致错误
热门标签
最新试卷
