Review for Exam 1

1. Define Primitive Data Type. List 4 primitive data types in Java.

3. Correct the following. Write no correction if the code is correct.

int val = 7.5;
double score = 89;
double avg = test1 + test2 /2;

4. What is output?

      System.out.println("Answer = " + 67 + 3); 

5. What characters do each of the following represent?

• \n
• \t
• \\

6. What characters are allowed in Java variable names?

7. You have two integer variables, minutes and hours. Minutes moves up by one. update hour and minutes?

   1. minutes = minutes % 60;

   2. minutes = minutes + hours % 60;

   3. hours = hours + minutes / 60; minutes = minutes % 60;

   4. hours = hours + minutes % 60; minutes = minutes / 60;

   5. hours = hours + minutes / 60;

8. Evaluate the following expressions:

   6%6 =
   8%6 =
   4%7 =
   6%3 =
   9%7 =

9. What is roundoff error?

10. Correct the following code so that it does not trigger roundoff error:

    double val = scan.nextDouble();
    System.out.println(val - 13.89);