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Which collection in java does not allow null key or value
Anonymous Quiz
29%
Hashmap
26%
Treemap
26%
Hashtable
19%
Linkedhashmap
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Which collection provides a way to access its elements in a random order in Java?
Anonymous Quiz
32%
Set
41%
List
17%
queue
9%
none
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#Java_Quizs (Question - 129)
Which of these operators can be used to concatenate two or more String objects?
Which of these operators can be used to concatenate two or more String objects?
Anonymous Quiz
61%
+
16%
+=
12%
&
11%
||
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Which of the following represents the Postorder Traversal of a Binary Tree?
Anonymous Quiz
39%
Left->Right->Root
30%
Root->Left->Right
20%
Left->Root->Right
11%
Right->Left->Root
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Anonymous Quiz
42%
Set
16%
List
24%
Array
18%
Collection
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Which feature has been added in java 8?
Anonymous Quiz
22%
Type annotation
29%
Autoboxing and unboxing
34%
Default interface methods
15%
Enhanced for loop
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