AP CSA unit 1 - 4 TEST

Front

Consider the following code segment.
System.out.println("W");
System.out.println("X");
System.out.print("Y");
System.out.print("Z");
What is printed as a result of executing the code segment?

Back

W
X
YZ

Front

Consider the following code segment:
int x = 10;
int y = 20;
/* missing code */
System.out.print(top / bottom);
Which of the following replacements for /* missing code */ will cause an ArithmeticException to occur?
I. int top = x - y;int bottom = y - x;
II.int top = 2 * x;int bottom = y - top;
III. int top = x + y;int bottom = 2 * top;

Back

II. only

Front

Consider the following code segment:
String str = "AP";
str += "CS " + 1 + 2;
System.out.println(str);
What is printed as a result of executing the code segment?

Back

APCS 12

Front

What is printed when the following code segment is executed?
public double calculate(double x)
{
return x + 1.5;
}
Double d1 = new Double(7.5);
System.out.println(calculate(d1));

Back

9.0

Front

Consider the following code segment, which is intended to display 6.0.

double fact1 = 1 / 2;
double fact2 = 3 * 4;
double product = fact1 * fact2;
System.out.println(product);

Which of the following best describes the error, if any, in the code segment?

Back

Either the numerator or the denominator of the fraction 1 / 2 should be cast as double.

Front

What is the expected output? -1, 0, 1, 17, 18

Back

17

Front

What does short circuit evaluation mean in the following code? if (a < b && c != d)

Back

if a < b is false it doesn't evaluate c != d

Front

The boolean expression (A || B) && A is true whenever?

Back

A is true

Front

Which java statement correctly implements the following pseudocode: display "A" when the student's grade is higher than 90 (inclusive)

Back

if (studentGrade >= 90)

Front

What is output by the following code?

Back

11