2. Collection Collections Arrays 3. java.util , (Collection) , ,
ArrayList LinkList TreeSet , , Object equals() hashcode() , 4. ,
Java 5 (Generic Type) , ( String ), , 5. 18-1 (Collection) , , ,
Java API java.util , , Collection ( ) , Java Collection Collections
Framework 6. (Collection) Java Collections Framework, Collections
Framework SCJP , 7. 18-1-1 Collections Framework ( ) , Collections
Framework , , 8. Collections Framework Collections Framework , , 2
9. Collections Framework Collection , Collection , , , / Set
SortedSet Set , Collection , Set / SortedSet , SortedSet , 10.
Collections Framework List List , List , List , Queue List , , , ,
(First In First Out) , 11. Collections Framework Map SortedMap Map
(key-value) , , Map , key ( ) SortedMap , Map , , java.util 12.
18-1-2 Collection , Collection , Set List , , Collection , ,
Collection 13. iterator() , , , Iterator iterator() , (int long
double ) (Integer Long Double ) , 14. , Collection 15. , , , , ,
16. Collections java.util , Collections Collection , , static , ,
Collections, , Collection , Map Collections List Collections static
17. 18-1-3 equals() hashcode() , , contains(Object o) o , Object
equals() , , (Hash table) , HashSet HashMap ( Hash ) , Object
hashcode() (Hash code), 18. equals() hashcode() Object equals() ==
, hashcode() ( ), , , , 19. equals() hashcode() 20. equals()
hashcode() 21. equals() hashcode() , , , (id) 22. equals()
hashcode() 23. equals() hashcode() equals() hashCode() , toString()
Object 3 public, equals() Object ( Student ), Java (Integer
Long...) String , Object , 24. Student ( ) int, , "RA001" ( RA ) ,
"SE23q0Xt9z45Ke81Puig" , , , , , 25. , , 3 1. , , 4502 ( , ) 2. (
equals() ), , , 2 , 4502 4502, 3. , , , , 4502 26. , , , equals() ,
, , , equals() , 27. hashCode() , , , , , , ( ) ( ), 28. 18-1-4 Set
Set , Set , Set , Collection , add() addAll() Set Set Abs tractSet
, HashSet LinkedHashSet TreeSet Set SortedSet , TreeSet SortedSet
29. Set Hash , , Object hashCode() 30. Set , 10 TreeSet , , , , ,
31. , 5.0 JDK, , (Note) JDK 5.0 Generics ( ) , , , 32. 5.0 , , 33.
Set HashSet LinkedHashSet TreeSet 34. HashSet HashSet , HashSet
HashSet , add() , Collection , HashSet 35. HashSet HashSet ,
HashSet , , HashSet HashSet , , HashSet , 36. HashSet 37. HashSet
38. HashSet1. 15 HashSet words 39. HashSet 2. 17 24 while , , , 3.
18 21 if add() , add() false, (Set ) break 4. 27 words , ,
toString() 40. HashSet , HashSet , HashSet , LinkedHashSet 41.
LinkedHashSet LinkedHashSet HashSet , , LinkedHashSet LinkedHashSet
42. LinkedHashSet 43. LinkedHashSet 44. LinkedHashSet ,
LinkedHashSet , , toArray() , , toArray() 45. TreeSet TreeSet 2 ,
TreeSet SortedSet , , 46. LinkedHashSet , int, first() last()
Object int ( Object ) Integer , (Unboxing) int String , ( ) , ,
18-1-10 47. LinkedHashSet 48. LinkedHashSet 1. 3 , 6 Arrays
asList() List , ts 2. , < - < 0~9 < A~Z < a~z < ,
xxxSet() , , , , 49. LinkedHashSet 50. LinkedHashSet 51.
LinkedHashSet 1. 8 10 TreeSet , 10 100 10 , 10 , add(new
Integer(i*10)) add(i*10), int (Autoboxing) Integer 2. 14 50 16
clear() 3. 11 18 , 52. LinkedHashSet , , , xxxSet() , 53. headSet
subSet tailSet (Backed Collection) , , , 54. 18-1-5 List List List
, List , (index) List , Collection add() remove() , 55. List 56.
List add() set() index element, set() add() , 57. List java.util
List AbstractList , AbstractSquentialList ArrayList LinkedList ,
58. ArrayList ArrayList , , , , , , , , ArrayList / , ArrayList 2
59. ArrayList ArrayList 60. ArrayList 61. ArrayList1. 8 ArrayList ,
2. 12 13 , 3. 15 17 add() , 4. 21 22 Collection get() 62. ArrayList
1 , , add() , , add() , , , 63. ArrayList , , ArrayList , ,
Collection toArray() 64. LinkedList LinkedList List , LinkedList
65. LinkedList , LinkedList (Data Structure) (stack) (LIFO, Last In
First Out) , ( ) , , 66. LinkedList , 67. LinkedList (queue) (FIFO)
, , 68. LinkedList , , java.util LinkedList , , LinkedList ,
LinkedList 69. LinkedList 70. LinkedList 71. LinkedList 72.
LinkedList 1. 15 LinkedList 2. 16 26 for 3. 17 18 addFirst() 4. 19
26 removeFirst() 73. LinkedList 5. 23 26 , NoSuchElementException ,
, , , LinkList List Queue , Queue offer() TIIP poll() peek() , 74.
18-1-6 Queue Queue (FIFO, First In Fisrt Out) , 6 , 3 , 3 75. Queue
Queue , LinkList ( List Queue ) , PriorityQueue 76. PriorityQueue
PriorityQueue (Priority) , , (FIFO) ( ), ( Comparotor ), 18-1-10 (
) 77. PriorityQueue 78. 18-1-7 Map Map (key-value pair) , , key
value , key , , , 79. Map , Map isEmpty() size() Collection , / 80.
Map Map 81. Map SortedMap Map , SortedSet 82. Map Map/SortedMap 83.
Map AbstractMap AbstractCollection toString() ,
System.out.println() Map AbstractMap 5 , HashMap TreeMap
LinkedHashMap , HashMap Set HashSet, 84. Map TreeMap TreeSet , ( )
, , , headMap() subMap() tailMap() ( ) LinkedHashMap LinkedHashSet
, HashMap 85. Map 86. Map 87. Map 1. 12 HashMap 2. 14 15 for cities
HashMap 3. 20 21 4. 24 , 88. Vector Hashtable ArrayList HashMap ,
(Thread safe) , (Synchronized) Hashtable t ( ), HashMap , key value
null, HashMap null key, null value SCJP , 89. 18-1-8 Iterator
Iterator ( ) java.util , , Collection iterator() , Iterator ,
Iterator Map iterator() , 18-26 entrySet() Map , Iterator 90.
Iterator Iterator 3 SubTree.java , Iterator 91. Iterator 92.
Iterator 93. Iterator 1. 8 10 TreeSet 1 100 2. 14 Iterator i 3. 16
18 while() , 9 , 4. 20 , 9 94. For-Each , For-Each JDK 5.0 ,
For-Each For-Each , , , for For-Each 95. For-Each , For-Each 96.
For-Each 97. For-Each 1. 8 JDK 5.0 , TreeSet 2. 15 For-Each ,
Integer i, IntTS For-Each , IntTS , i 98. 18-1-9 TreeSet TreeMap
PriorityQueue , (Natural order) , String (A B, ), int , , , , Java
99. , Comparable compareTo() , , , Comparator 100. Comparable
Comparable , CompareTo() , 101. Comparable 102. Comparable 10~11
Comparable compareTo() , public int, 0 , 0 ( ), 0 Comparable ,
Comparable, compareTo(Objet o) compareTo(Student o), (Student) o (
18-2 ) 103. Comparable 2. compareTo() String Integer , compareTo()
, 11 3. 17~20 3 104. Comparable , , , CompareTo() , TreeSet 5, 6L
ClassCastException 6L , 6L (Long) compareTo(Long ) , (5, Integer)
Long 105. Comparator Comparable , ( ) , , Comparator , Student 106.
Comparator 107. Comparator 1. 13 17 , Comparator compare() , 2 ,
Comparable compareTo() Comparator , Comparator, compare()
compareTo(Student o1, Student o2), (Student) o1 o2 ( 18-2 ) 108.
Comparator 2. 23 28 TreeSet , comare() , , 109. 18-1-10 Collections
Arrays Collections Arrays , ... Collections Collection , 110.
Collections Arrays Collections , List , ArrayList Arrays , 111.
Collections Arrays 112. Collections Arrays Book (Book.java), 113.
Collections Arrays 114. Collections Arrays Book Object toString()
equals() hashCode() , compareTo() BookByName 115. Collections
Arrays 116. Collections Arrays 117. Collections Arrays 1. 4~9 , 11
List ArrayList , 2 2. 17~21 List , 23~27 List 118. Collections
Arrays Collections.binarySearch() , List , comparator ,
binarySearch() comparator , ( 0 int) , , ( key List , ) x , (-x-1),
103 -2, (-(2)-1) = 1 119. 18-1-11 TreeSet TreeMap Java 6 , TreeSet
TreeMap (Navigating) NavigatableSet NavigatableMap 120. Collections
Arrays NavigatableSet 121. Collections Arrays NavigatableMap , Key
Entry Java 5 Java 6 , 122. Collections Arrays 123. Collections
Arrays 1. 8 9 Java 5 , headSet() 140 , last() 2. 12 Java 6 ,
lower() 124. Collections Arrays , NavigatableXxx (Xxx Set Map)
headXxx() tailXxx() subXxx() , boolean , , boolean NavigatableXxx ,
boolean SortedXxx 125. 18-2 (Generic Types) , (Type Safe) , ,
String Integer , , , Java , ( Object ) 126. 18-2-1 ( ) , Java 5
(Generic Types) , "< >", , 127. < > , (Type parameter)
(Parameterized type), , , , 128. , tm.get(1) String , , int , 129.
, , newBook( ) ArrayList (Book Book.java, 8-1-10 ) 130. 131. 132.
18-2-2 , Java , 133. 134. 1. 5 6 , 10 newBook , b , 2. 14 , Book
135. 3. , Note , ( ) , -Xlint:unchecked , , 136. 18-2-3 Java ,
(Type erasure) , .class (Byte code) , 137. , , , newBook() 138.
TreeSet , newBook() String , TreeSet ( ), 6 , Book 139. , 10 String
, JVM , , , , ( ), Integer Object , String ( ArrayStoreException
140. 18-2-4 Java , , , TreeSet , TreeSet , Long 141. , , , 142. , ,
, Integer Object , , , 143. 144. , ArrayList TreeSet, 6
ClassCastException , 5 (Integer) Long 6L compareTo(Long) 145.
18-2-5 , , , TreeSet TreeSet... TreeSet , (Wildcard type) 146. 147.
1. 2 List sortList() 2. 7 11 15 ArrayList , 148. sortList() Number
, 17 , String Number extends , , extends implements 149. , List
List List , List< >, List List 150. super , , sortList() 151.
, 3 cannot find symbol , aList add() , ArrayList , Integer , , , ,
, class T { void T(T T) { } ; } , ( 5 T ) 174. 18-A 18-B 175. 1.
Given:What is the result? A. b,a,c,B. c,a,b,C. c,b,a,D. Compilation
fails. E. An exception is thrown at runtime. 176. 2. Please place
the correct Strings to the Output empty boxes. 177. 3. Which class
implements the NavigatableMap ? A. HashMap. B. SortedMap. C.
TreeMap. D. LinkedHashMap. E. NavigateMap. 178. 4. Given: 179. What
is the result? A. 2 B. 3 C. 4 D. 16 E. Compilation fails. 180. 5.
Given:What is the result? A. 3.14 50 100 B. 100 50 3.14 C.
Compilation fails. D. An exception is thrown at line 4. E. An
exception is thrown at line 5. F. An exception is thrown at line 7.
181. Place the correct Animals to the Outputs empty boxes. (Animals
can be used more than once . ) 182. 7. Which two, inserted at line
1, will compile? (Choos two.)A. B. C. D. E. F.class MaxValue {
class MaxValue { class MaxValue { class MaxValue { class MaxValue {
class MaxValue
