1. String
is an________
a. Class
b.
Object
c. Variable
d. Array
2. String
created by using______
a.
String
buffer
b. String
c. String
class
d. None
of these
3. String
class is more commonly used to display
a. Character
b. Text
c.
Messages
d. Object
4. The
syntax to declare a string is as follow:
a.
String
string_name;
b. String
string name
c. String
string class;
d. String
String_class
e. ;
5. It
refers to an object in java, which has a sequence of characters.
a. Array
b.
String
c. Vector
d. None of these
6. The
initial capacity of a default vector is __________.
a. 17
b. 12
c.
10
d. 20
7. String
are always specified in
a. Braces
b.
Double
quotes
c. Single
quotes
d. Square
brackets ([])
8. The
_______class contains methods to store any number and any type of objects in a
single unit called vectors
a. Array
b.
Vector
c. String
d. Wrapper
9. The
___________classes are used to convert primitives data type into objects before
storing them in the vectors
a. String
b.
Wrapper
c. Array
d. Vector
10. Array are
defined as a ___size sequence of the same type of data elements
a.
Fixed
b. Dynamic
c. Static
d. None
11. The wrapper
classes are used to convert ________data types into their respective class
instances
a.
Primitive
b. Non-primitive
c. Both
a & b
d. None
12. Vector is a
dynamic array which can accommodate:
a. Any
number
b. Type
of objects
c.
Both a &
b
d. None
of these
e.
13. The new
class acquires those members of the old class that are already__________
and___________
a. Trace
& debug
b.
Tested &
debugged
c. Tested
& trace
d. None
of these
14. In java
different data types like_________
a. Array
b. String
c. Vector
d.
All of these
15. Data types are capable of grouping related
data together into a_______
a.
Single unit
b.
Multiple unit
c. Double
unit
d. None
of these
16. Java
provide a different kind of data type known as______
a.
Array
b. String
c. Vector
d. None
of these
17. Array can
be of _________ type:
a. 4
b. 6
c.
2
d. 3
18. Array can
either single dimensional or multi dimensional depending upon the number of
_________ used:
a. Superscripts
b.
Subscript
c. Both
a & b
d. None
of these
19. All the
elements created using the new operator in the array will be automatically to:
a.
Zero
b. Null
c. Default
d. None
of these
e.
20. Every
elements in an array is associated with a unique subscript value starting from:
a. 0
to size
b. 0
to size +1
c.
o to size -1
d. None
of these
21. Index of an
array starts with:
a.
Zero
b. One
c. Default
d. None
of these
22. The memory
location where the first element of an array is stored is known as the:
a.
Base address
b. Sub
address
c. Derived
address
d. None
of these
23. Initialization
of two dimensional array:
a.
Increase the
readability
b. Decrease
the readability
c. Increase
the maintainability
d. Decrease
the maintainability
24. Operation
performed on a dimensional array include finding the:
a. Seem
of row element
b. Column
element & diagonal element
c. Finding
the max & min values
d.
All of these
25. String class is more commonly used to
a.
Display errors
b.
Display
messages
c. Display
programs
d. None
of these
e.
26. String created using string buffer class are
of:
a.
Varying
length
b. Fixed
length
c. Both
a & b
d. None
of these
e.
27. The vector
class contained in the ________ package:
a.
Java.util
b. Java,util
c. Java.’util’
d. None
of these
e.
28. Java.util
package defines methods to store object into a________
a.
Single unit
b. Double
unit
c. Multiple
unit
d. None
of these
29. Java
provides wrapper classes contained in the__________ package:
a. Java,lang
b.
Java.lang
c. Java.lang;
d. None
of these
30. Each
element of the array is itself an array is_________
a.
Multi-dimensional
array
b. Single-dimensional
array
c. Arrays
d. None of these
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