Java Tutorial Questions

Tutorial 1 - Calculation 1. What are the values of the following expression? (a) 6 / 3 * 7 (b) 7 * 6 / 3 (c) 28 / 5 (d) 16 % 2 (e) 28 % 5 (f) 28 % 3 * 5 + 1 (g) 20 / (4 + 1) (h) 18 / 2 + 14 / 2 2. What is the value of each of the following boolean expression? (a) 4 >1 (b) 5 <= 15 (c) 43 <= 43 (d) 2 = = 3 (e) 2 + 5 = = 7 (f) 3 + 8 < = 10 (g) 3 != 9 (h) 13 ! = 13 (i) -4 ! = 4 (j) 2 + 5 * 3 = = 21 3. Are the following identifiers valid? (a) applet (b) Applet (c) a++ (d) --a (e) 4#R (f) #44 (g) apps 4. Declare the following (a) an int variable with an initial value of 0 (b) a long variable with an initial value of 10000 (c) a float variable with an initial value of 3.4 (d) a double variable with an initial value of 34.45 (e) a char variable with an initial value of 4 (f) a boolean variable with an initial value of true 5. Find the largest and smallest byte, short, int, long, float, and double. 6. Are the conversions shown below valid or invalid? If valid, what is the result. (a) char c = 'A'; int i = (int) c; (b) boolean b = true; int i = (int) b; (c) float f = 1000.34f; int i = (int) f; (d) double d = 1000.34; int i = (double) d; (e) int i = 1000; char c = (char) i; (f) int i = 1000; boolean b = (boolean) b; 7. Write a statement or comment to accomplish each of the following: (a) state that this program will calculate the product of 3 integers. (b) name the class name as Calculate (c) declare the variable x, y and z to be of type int. (d) initialize the variable x and y to be 3, and 4. (e) assign the result of addition of x and y to variable z. (f) print out the result as x + y = z. 8. Assume the