Question 1.

What is the result of the following Boolean expression?

int no1 = 6, no2 = -2;

(no1 == 6) && (no2 > 2)

(a) true

(b) false

Question 2.

What is the result of the following Boolean expression?

int no1 = 6, no2 = -2;

(no1 == 6) || (no2 > 2)

(a) true

(b) false

Question 3.

What is the result of the following Boolean expression?

int no1 = 6, no2 = -2;

(no1 == 6) && !(no2 > 2)

(a) true

(b) false

Question 4.

What is the result of the following Boolean expression?

int no1 = 6, no2 = -2;

(no1 == 6) && ((no2 != 3) || (no2 > 2))

(a) true

(b) false

Question 5.

If a = 2 and b = 3 what is the result of evaluating this expression:
 
      ! ((a  !=  0) || (b  < =  5))
(a) false

(b) true

Question 6.

Which one of the following is not an example of a Boolean expression?

(a)   x = 6

(b)   str.equals("fool")

(c)   cause == effect

(d)   result = b < c

Question 7.

Which one of the following is an invalid Boolean expression?

int k = 0, j = 2;

boolean b1 = true, b2 = false;

String str = "hi";

char ch = 'a';

j <= k

b1 == !b2

str == ch

ch != 'A'

(a)   expressions 1

(b)   expressions 2

(c)   expressions 3

(d)   expressions 4

Question 8.

What is the output produced by the following code fragment?
int num = 0;

num++;

if (num > 0) 

  System.out.print("Hello ");

else

  System.out.print("Goodbye ");
(a)   Hello

(b)   Goodbye

(c)   Hello Goodbye

(d)   This code won't compile so no output is produced

Question 9.

What will the following statement sequence output?

int a = 6;

int b = 6;

if (a==b)

System.out.println("Equal");

else

System.out.println("Definitely Not Equal");

(a) Definitely Not Equal

(b) Equal

(c) The program doesn't compile because = = cant be used here

(d) Equal Not equal

Question 10.

What is the final output after executing the class MyClass below?

class MyClass {

public static void main( String args[] ){

int my_number = 3;

int your_number;

while ( my_number < 10 ){

your_number = my_number;

my_number += your _number * 2;

}

System.out.println( "Answer is " + my_number );

}

(a) Answer is 15

(b) Answer is 13

(c) Answer is 27

(d) Answer is 15

Question 11.

What is the value of i after the following code fragment has finished executing?

int i = 0;

int j = 11

while (i < j){

i++;

}

(a)   12

(b)   11

(c)   10

(d)   Null

Question 12.

What does the last statement finally print?

int k = 0;

for(int i=1; i<5; i++){

k++;

}

System.out.println("i + k = " + (i + k) );

(a)   i + k = 4

(b)   i + k = 5

(c)   i + k = 8

(d)   The code doesn't compile since the scope of i is limited to the         for loop.

Question 13.

Which of the following loops will not be entered?

(a)   while (true){do something...}

(b)   while (!false){do something...}

(c)   for(int i=2; i==1; i++){do something...}

(d)   for(int i=0; i!=1; i++){do something...}

Question 14.

Which of the following loops will repeat indefinitely?

(a)   for(int i=2; i<10; i++){

(b)   for(int i=2; i<=10; i++){

(c)   for(int i=2; i==1; i++){

(d)   for(int i=2; i!=1; i++){

Question 15.

I wish for a loop to repeat 10 times. Which of the following does this?

(a)   for(int i=1; i<=10; i++){

(b)   for(int i=1; i<10; i++){

(c)   for(int i=1; i==10; i++){

(d)   for(int i=1; i!=10; i++){