AP Computer Science A primitive types review

What are primitive types?

Basic data types like int, double, char, and boolean used in Java.

Difference between int and double.

int stores whole numbers; double stores decimal values.

True or false: char can hold multiple characters.

False, because char holds a single character.

What is the range of int in Java?

From -2,147,483,648 to 2,147,483,647.

Fill in the blank: The keyword for floating-point numbers is ____.

double.

What does boolean represent?

It represents true or false values.

Difference between float and double.

float is 32-bit; double is 64-bit, providing more precision.

True or false: The literal '10' is considered a double.

False, because it is an int unless specified with a decimal.

What is the default value of a boolean?

The default value is false.

What is a char's value range?

From '\u0000' (0) to '\uffff' (65,535).

How many bytes does an int consume?

4 bytes.

True or false: An int can hold a decimal value.

False, because an int only holds whole numbers.

Difference between primitive and reference types.

Primitive types hold values directly; reference types hold addresses of objects.

Fill in the blank: An example of a floating-point literal is ____.

3.14.

What type is used for characters?

The char type.