Test 1 Prep Questions

Question 1

Is the following syntax legal or not legal:

double age = 3;

Answer 1

legal

Question 2

A method header must not contain which of the following keywords:

a. ) static
b. ) void
c. ) method
d. ) private

Answer 2

c.)

Question 3

What is the fundamental difference between the private and public members found in a class?

Answer 3

public: other classes can access
private: can only be accessed inside original class

Question 4

What is stored in a .class file generated by the Java compiler?

Answer 4

Java Virtual Machine (JVM) bytecode

Question 5

Circle the letter matching the statement that is true about static variables.

a. ) A static variable may not be altered after its initial assignment except when keeping track of how many instances of its associated class have been created.
b. ) Static variables that are created within methods keep their values between method invocations.
c. ) A single instance of a static variable exists regardless of the number of instances of the associated class.
d. ) The static modifier cannot be used without a final modifier.

Answer 5

c.)

Question 6

What is the resulting value and primitive type:

32.0 % 6

Answer 6

2.0

double

Question 7

What is the resulting value and primitive type:

(1/4 + 3.5) * 2.0

Answer 7

7.0

double

Question 8

What is the resulting value and primitive type:

3/2 + 2/3

Answer 8

1

int

Question 9

Rewrite the following for loop as an equivalent while loop:

for (int i = 0; i

Answer 9

int i = 0;

while (i

Question 10

Which of the following creates a die that produces the upper ranges of a regular 6-sided die (must have some randomness, gen is a Random object):

a. ) int faceValue = gen.nextInt(1) + 6;
b. ) int faceValue = gen.nextInt(4) + 2;
c. ) int faceValue = gen.nextInt(3) + 4;
d. ) int faceValue = gen.nextInt(6);

Answer 10

c.)