Java PRP important questions Wipro
Hey guys, I know you are worried about your prp assessment. Before going ahead I would say to you be relax and study hard. It is not tough like that some people says. Here I am going to provide you some j2ee prp important mcq question and answer. questions may be which going to help you in your prp assessment test. Remember I am not saying that these questions will be ask in your prp assessment test but thse question will give you an idea which type of questions they ask.
1. Which of these packages contain all the collection classes?
a) java.lang
b) java.util
c) java.net
d) java.awt
Answer: b
2. Which of these classes is not part of Java’s collection framework?
a) Maps
b) Array
c) Stack
d) Queue
Answer: a
3. Which of this interface is not a part of Java’s collection framework?
a) List
b) Set
c) SortedMap
d) SortedList
Answer: d
4. What will be the output of the following java code?
class Test
{
public static void main(String args[])
{
int x=3;
int y=~x;
int z;
z=x>>y?x:y;
System.out.println(z);
}
}
a) 0
b) 1
c) 4
d) 3
Answer: d
5. Which of these methods deletes all the elements from invoking collection?
a) clear()
b) reset()
c) delete()
d) refresh()
Answer: a
6. What is Collection in Java?
a) A group of objects
b) A group of classes
c) A group of interfaces
d) None of the mentioned
Answer: a
7. Which of these interface is not a part of Java's collection framework?
a) List
b) Set
c) SortedMap
d) SortedList
Answer: d
8. Which of the following is the advantage of BigDecimal over double?
a) Syntax
b) Garbage collection
c) Memory usage
d) Precision
Answer: d
9. Which of these interface declares core method that all collections will have?
a) set
b) EventListner
c) Comparator
d) Collection
Answer: d
10. Which of these interface handle sequences?
a) Set
b) List
c)) Comparator
d)) Collection
Answer: b
11. Which of these interface must contain a unique element?
a) Set
b) List
c) Array
d) Collection
Answer: a
12. Which of these is Basic interface that all other interface inherits?
a) Set
b) Array
c) List
d) Collection
Answer: d
13. Which of these collection classes has the ability to scale dynamically?
a) Array
b) Arrays
c) ArrayList
d) All the answers are true
Answer: c
14. HashMap allows _____________
a) null values
b) null key
c) Both A & B
d) None of the above
Answer: c
Also Read: J2EE prp important mcq question and answer
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