APCSA - Unit 3

String name1 = new String("Norman");

String name2 = new String("Norman");

System.out.println(name1 == name2);

• TRUE

• FALSE

MyObject obj1 = new MyObject();

MyObject obj2 = new MyObject();

MyObject obj3 = obj1;

Which variables are aliases?

• obj1 and obj2

• obj1 and obj3

• obj2 and obj3

• obj1, obj2, and obj3

Which boolean expression is TRUE for all values of a and b?

• a && (b || c)

• !a || !b

• a || (!a || b)

• (a && b) || !b

x >= 3 || y < 7

Which of these is equivalent to the expression above?

• !(x < 3 && y >= 7)

• !(x > 3 || y <= 7)

• x < 3 && y >= 7

• x <= 7 || y > 3

a || (a || !b)

Which of these is equivalent to the expression above?

• a || b

• a && b

• a || !b

• !a || b

if (x < 0) { value = true; }

else if (x > 5) { value = true; }

else { value = false; }

Which of these code segments is equivalent to the code segment above?

• value = x < 0 && x > 5;

• value = x < 0 || x > 5;

• value = true;

• value = false;

int x = 2;

if (x < 5) { System.out.print("A"); }

else if (x < 10) { System.out.print("B"); }

else { System.out.print("C"); }

What is printed?

• A

• AB

• ABC

• BC

int num = 7;

if (num > 0) { System.out.print("A"); }

if (num > 5) { System.out.print("B"); }

if (num > 10) { System.out.print("C"); }

What is printed?

• A

• AB

• ABC

• BC

int x = 3;

int y = 2

boolean value = (x > 5) == (y != 2);

System.out.println(value);

What is printed?

• true

• false

num1 && !num2

Which expression is equivalent to the expression above?

• !num1 && !num2

• !num1 || !num2

• !(!num1 || num2)

• !(num1 && !num2)