1.2-1.3 Quick Review

What categories of data types exist in Java

• primitive

• qualitative

• reference

• numerical

What 3 primitive data types do you need to know about in AP Java?

• int

• String

• boolean

• double

• triple

Which of the following are valid ways to declare variables and give them values?

• double x = 2.0;

  final int y = 3;

  y = 4;

  boolean z = false;

• int x = 1;

  double y = 2.0;

  boolean z = true;

• int x;

  double y;

  boolean z;

  x = 1;

  y = 2.0;

  z = false;

• int x = 1;

  int x = 2;

  boolean y = 8;

What does every Java statement end with?

Division of int variables in Java always...

• Rounds up to the nearest whole number

• Rounds down to the nearest whole number

13 % 4 = ______

• 1

• 2

• 3

• 4

What gets printed below?

int n = 10;

n = n + 5;

n = n - 4;

n = n*2;

System.out.println(n);

• 11

• 15

• 20

• 22

What gets printed below?

double n = (14/5);

• 2.8

• 3

• 2.0

• 2

• Error

What gets printed below?

int n = (14/5.0);

• 2.8

• 3

• 2.0

• 2

• Error

On a scale of 1-5, how comfortable do you honestly feel with this material right now? (1 = very uncomfortable, 5 = mastery)

• 1

• 2

• 3

• 4

• 5