Exercises

Below are a list of exercises to complete. Answers will be provided in the next section.

Important

To learn properly it is recommended to attempt the exercises before looking at the answers.

  1. What are the results of these casts?

double X;
short Y = 10;
X = Y;
System.out.println(X);

long Z;
int F = 1234567;
Z = F;
System.out.println(Z);

  1. Add to the code below:

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public class QuestionTwo
{
    public static void main(String[] args)
    {
        double X = 12345.54321789;

        // Show X as a double
        System.out.println("X as a double: " + X);

        // Show X as a float


        // Show X as an integer


        // Show X as a byte

    }
}

  1. What are the results of these operations:

int X = 5 + 2;
int Y = 20 / 2;
int Z = 10 % 3;

X %= 2;
Y /= 5;
Z *= 2;

X == 2;
Y > 1;
Z <= 5;

(5 > 2) && (2 > 2)
(5 <= 5) || (2 == 2)
!(5 <= 6) || (2 == 2) && (3 > 3)

Challenge Question

Note

Challenge questions are here to stump you and test your problem solving skills. The content in a challenge question will be covered in later units.

  1. Create a sales tax calculator. The user is required to input the value of the item. The output may only have 2 decimal places and the sales tax rate is 13%.

Example output

Enter purchase amount: $299.99
Sales Tax is: $38.99