AP CSA Variables and Operators

Which variable type is NOT a primitive variable type?

• boolean

• String

• int

• double

What is a logic error?

• An mistyped statement that causes the compiler to throw an exception.

• An illegal operation that causes the compiler to throw an exception.

• An illegal operation that causes the program to have a run-time error.

• An error a programmer makes that causes the program to behave differently than expected.

What is the correct syntax to instantiate a Finch object with its default constructor?

• Finch(f);

• Finch f;

• Finch f = Finch();

• Finch f = new Finch();

What is the result of 3/2 in Java?

• 1.5

• 1.0

• 1

• 0

What is the result of 3.0/2 in Java?

• 1.5

• 1.0

• 1

• 0

What is the % operator in Java?

• percentage

• homonculus

• modulus

• modulator

What is the result of 3%2?

• 1

• 1.5

• 1.0

• 0

What is the result of 2%1?

• 0

• 1

• 2

• This cannot be calculated.

What is the difference between primitive variables and Object reference variables?

• Primitive variables hold a variable's value, whereas Object reference variables do not a value, they point to it .

• Primitive variables take up a specific amount of memory, whereas the amount of memory an Object reference can take up varies.

• Both answers are correct.

What is the long form of x++?

• x += x;

• x = x + 1;

• x + 1;

• y = x + 1;