Unit 1 APCSA

Front

Which of the following is not a primitive type? int, double, String, boolean, char

Back

String

Front

Which of the following statements is true about variables? The memory associated with a variable of a primitive type holds an actual primitive value. When a variable is declared final, its value can only be changed through a direct reassignment. A variable originally created as an int can be changed to store a double through casting. All of these choices are true.

Back

The memory associated with a variable of a primitive type holds an actual primitive value.

Front

What is the value of x after this code runs: int x = 5; x = 10; x*=2; x+=3;

Back

23

Front

What is the value of x after this code runs
int x = 5;
x = 10;
x = 4;

Back

4

Front

What is the proper syntax to declare and initialize a variable called temperature to have the value 70.4?

Back

double temperature = 70.4;

Front

What is the result of this expression? (int) (5 + 2 / 3 + 1)

Back

6

Front

Which expression returns the 1’s place of an integer x? Options: x % 10, x / 10, x % 100, x + 1, x / 100

Back

x % 10

Front

What is the value of myInteger after this line of code is executed? int myInteger = (int) 5.6;

Back

5

Front

What output will be produced by
System.out.println("Hello");
System.out.println("Karel");

Back

Hello
Karel

Front

Refer to the following code segment:
double myDouble = 1/4;
System.out.println("1 / 4 = " + myDouble);
The output of the code is:
1 / 4 = 0.0
The student wanted the output to be:
1 / 4 = 0.25
Which change to the first line of their code segment would get the student the answer that they wanted? Options:
int myDouble = 1/4;
double myDouble = (double) 1/4;
double myDouble = (int) 1/4;
double myDouble = (int)(1.0/4.0);

Back

double myDouble = (double) 1/4;