APCSA Unit 1 Review 1

What will this code segment output?

System.out.println("Hello");

System.out.println("World");

• Hello

  World

• HelloWorld

• Hello World

• Hello

  
  

  World

Which code segment will print “Hello Karel” to the screen in Java?

• System.out.printLine("Hello Karel");

• print "Hello Karel";

• System.out.println("Hello Karel");

• System.println("Hello Karel");

After the following code is executed, what is the value of t?

int t;

t = (int)99.999999;

• 99.999999

• 100.0

• 99

• 99.0

• None of the above — an error occurs.

After this code is executed, what is the value of x?

double x = 12;

• 12

• 12.0

• 24

• unknown

• none of these - an error occurs

After this code is executed, what is the value of y?

int y;

y = 2.7;

• 2

• 2.0

• 2.7

• 0

• none of these - an error occurs

Which of the following declares and initializes a variable in Java?

• int x;

• double z = 27;

• myInt = 12;

• int a = 15;

• char c = 'c';

What is the result of this code?

final int z;

z = 20;

z = 30;

System.out.println(z);

• 30

• 20

• 50

• nothing is printed

• none of these - an error occurs

What is the result of this code?

int first = 7;

int second = 2;

int result = first / second;

System.out.println(result);

• 3.5

• 3.50

• 3

• 3 1/2

• none of these - an error occurs

What is 15%4?

• 3 3/4

• 3.75

• 3

• 4

• none of these

What is the correct syntax for creating a Scanner object?

• Scanner = new Scanner;

• scanner object = new scanner(System.in);

• Scanner objectName = new Scanner(System.in);

• Scanner objectName = System.in;

• none of these