Conditional Constructs in Java

Chapter 8

Conditional Constructs in Java

Class 8 - Logix Kips ICSE Computer Applications with BlueJ

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Multiple Choice Questions

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Question 1

Which of the following are conditional constructs?

1. if-else
2. if-else-if ladder
3. switch statement
4. All of these ✔

Question 2

Which operator cannot be used with if-else statement?

1. <=
2. ||
3. &&
4. ? : ✔

Question 3

What will be the output of the following code?

int size = 2; 
if (size < 0) 
    System.out.println("Small"); 
else if (size == 0) 
    System.out.println("Medium"); 
else 
    System.out.printIn("Large"); 

1. Small
2. Large ✔
3. Medium
4. Runtime error

Question 4

What will be the output of the following code?

int fruit = 3; 
switch (fruit + 1) 
{ 
    case 1: 
        System.out.println("Banana"); 
        break ; 
    case 2: 
        System.out.println("Apple"); 
        break ; 
    case 3: 
        System.out.println("Orange"); 
        break ; 
    default : 
        System.out.println("Fruitless"); 
} 

1. Orange
2. Banana
3. Apple
4. Fruitless ✔

Question 5

Predict the output of the following code snippet:

int a = 1; 
int b = 2; 
if (a == b) 
   System.out.println ("Both values are equal"); 
else 
   System.out.println ("Values are not equal"); 

1. Both values are equal
2. Incorrect use of the == operator
3. Values are not equal ✔
4. No output

Question 6

Consider the following code snippet:

if ( c > d) 
   x = c; 
else 
   x = d; 

Choose the correct option if the code mentioned above is rewritten using the ternary operator:

1. x = (c >d) ? c : d; ✔
2. x = (c >d) ? d : c;
3. x = (c >d) ? c : c;
4. x = (c >d) ? d : d;

Question 7

if ((a > b) && (a > c)), then which of the following statements is true?

1. a is the largest number. ✔
2. b is the largest number.
3. c is the largest number.
4. b is the smallest number.

Question 8

Consider the following code snippet:

int val = 2; 
switch (val) 
{ 
   case 1: System.out.println("Case 1"); 
   break; 
   case 2: System.out.println("Case 2"); 
   break; 
   default: System.out.println("No match found"); 
   break; 
} 

Which of the following statements is correct?

1. case 1 will be executed.
2. case 2 will be executed. ✔
3. default will be executed.
4. both case 1 and 2 will be executed.

Question 9

A sequence of statements enclosed between a pair of curly brackets is called

1. a compound statement ✔
2. an empty statement
3. a null statement
4. a void statement

Question 10

Which clause is optional in the switch statement?

1. default ✔
2. case
3. switch
4. None of these

Question 11

Which of the following statements involves a fall-through?

1. if-else
2. for loop
3. if-else-if ladder
4. switch ✔

Question 12

Which of the following causes a fall-through in the switch statement?

1. the omission of fall
2. the omission of continue
3. the omission of break ✔
4. the omission of loop

Question 13

Which of the following is mandatory in the switch statement?

1. break
2. continue
3. case ✔
4. default

Question 14

Which of the following statement is a valid combination?

1. if inside switch ✔
2. switch inside if ✔
3. else inside switch
4. default inside if