Object Oriented Programming - I (3140705) MCQs

MCQs of Introduction to java and elementary programming

Showing 51 to 60 out of 95 Questions
3 4 5 6 7 8
51.
What is the extension of compiled java classes?
(a) .class
(b) .java
(c) .txt
(d) .js
Answer:

Option (a)

52.
What is the range of short data type in Java?
(a) -128 to 127
(b) -32768 to 32767
(c) -2147483648 to 2147483647
(d) None of the mentioned
Answer:

Option (b)

53.
What is the range of byte data type in Java?
(a) -128 to 127
(b) -32768 to 32767
(c) -2147483648 to 2147483647
(d) None of the mentioned
Answer:

Option (a)

54.
Which of the following are legal lines of Java code? 
   1. int w = (int)888.8;
   2. byte x = (byte)100L;
   3. long y = (byte)100;
   4. byte z = (byte)100L;
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) All statements are correct
Answer:

Option (d)

55.
An expression involving byte, int, and literal numbers is promoted to which of these?
(a) int
(b) long
(c) byte
(d) float
Answer:

Option (a)

56.
Which of these literals can be contained in float data type variable?
(a) -1.7e+308
(b) -3.4e+038
(c) +1.7e+308
(d) -3.4e+050
Answer:

Option (b)

57.
What will be the output of the following Java statement? 
class output {
        public static void main(String args[]) 
        {
            double a, b,c;
            a = 3.0/0;
            b = 0/4.0;
            c=0/0.0;
 
	    System.out.println(a);
            System.out.println(b);
            System.out.println(c);
        } 
    }
(a) Infinity
(b) 0.0
(c) NaN
(d) all of the mentioned
Answer:

Option (d)

58.
What is the numerical range of a char data type in Java?
(a) -128 to 127
(b) 0 to 256
(c) 0 to 32767
(d) 0 to 65535
Answer:

Option (d)

59.
Which of these coding types is used for data type characters in Java?
(a) ASCII
(b) ISO-LATIN-1
(c) UNICODE
(d) None of the mentioned
Answer:

Option (c)

60.
Which of these values can a boolean variable contain?
(a) True & False
(b) 0 & 1
(c) Any integer value
(d) true
Answer:

Option (a)

Showing 51 to 60 out of 95 Questions
3 4 5 6 7 8