Question 1 What is the value of the value variable at the end of the given code

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Question 1

What is the value of the value variable at the end of the given code snippet?

int value = 3;

value = value - 2 * value;

value++;

Question 2

What will be printed by the statements below?

final int BONUS = 20;

int salary = 100;

int netSalary = salary + BONUS;

System.out.print(netSalary);

Question 3

What is the output of the following code snippet?

String str = "Harry";

int n = str.length();

String mystery = str.substring(0, 1) + str.substring(n - 2, n);

System.out.println(mystery);

Question 4

What is result of evaluating the following expression?

(45 / 6) % 5

Question 5

What is the value of the following expression?

3 * 5 / 2 * 5

Question 6

What is the value of the following expression in Java?

2 + 3 + 5 / 2

Question 7

Assuming that the user inputs a value of 25 for the price and 10 for the discount rate in the following code snippet, what is the output?

Scanner in = new Scanner(System.in);

System.out.print("Enter the price: ");

double price = in.nextDouble();

System.out.print("Enter the discount rate: ");

double discount = in.nextDouble();

System.out.println("The new price is " + (price - price * (discount / 100.0)));

Question 8

Assuming that the user inputs “Joe” at the prompt, what is the output of the following code snippet?

System.out.print("Enter your name ");

String name;

Scanner in = new Scanner(System.in);

name = in.next();

name += ", Good morning";

System.out.print(name);

Question 9

What will be the value of the variables a and b after the given set of assignments?

int a = 20;

int b = 10;

a = (a + b) / 2;

b = a;

a++;

Value of a:
Value of b:

Question 10

What is the output of the following code snippet?

System.out.printf("%5.3f", 20.0);

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Explanation / Answer

1. It will be -2. ++ operator increases it by 1 after 2nd line stores -3 as value.

2. 120. net salary is defined as a sum of 100 and 20.

3. Hry. n will be 5. mystery will be "H" + "ry".

4. 2.

5. 35. Here operator precedence is same but associativity will be followed from left to right.

6. 7. Here / precedence is higher than +.

7. Output: The new price is 22.5

8. Output: Joe, Good morning

9. a=16,b=15.

10 20.000

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