Java MCQ - Practice Questions

Question 1

Which of the following are valid statements

Accepted Answer

Question 2

In order for a source code file, containing the public class Test, to successfully compile, 
which of the following must be true?

Accepted Answer

Question 3

What is the range of the char type?

Accepted Answer

Question 4

Which of the following are true?
a)The Class class is the superclass of the Object class. 
b)The Object class is final. 
c)The Class class can be used to load other classes. 
d)The ClassLoader class can be used to load other classes.

Accepted Answer

Question 5

Which of the following are true?
a)Any Unicode character is represented using 16-bits. 
b)7-bits are needed to represent any ASCII character. 
c)UTF-8 characters are represented using only 8-bits. 
d)UTF-16 characters are represented using only 16-bits.

Accepted Answer

Question 6

Which of the following will output -4.0

Accepted Answer

Question 7

Which of the following are primitive types?

Accepted Answer

Question 8

Which of the following are true about I/O filters?
a)Filters are supported on input, but not on output. 
b)Filters are supported by the InputStream/OutputStream class hierarchy, but not by the Reader/Writer class hierarchy. 
c)Filters read from one stream and write to another. 
d)A filter may alter data that is read from one stream and written to another.

Accepted Answer

Question 9

Which of the following are true?

Accepted Answer

Question 10

Which of the following declare an array of string objects?
a)String[ ] s; 
b) String [ ]s: 
c)String[ s]: 
d) String s[ ]:

Accepted Answer