Variables and Data Types - AP Computer Science A

32 bits. Float uses single precision for decimal numbers.

false. Java initializes unassigned boolean variables to false.

1. Java initializes unassigned integer variables to zero.

char. It stores a single Unicode character in 16 bits.

boolean. It can only hold one of two logical states.

double. It provides 64-bit precision for floating-point numbers.

float temperature;. Float provides 32-bit precision for decimal numbers.

Not precisely defined. Implementation varies by JVM and platform.

String name;. This creates a String reference variable.

Equality. It compares two values for identical content.

1. Modulo returns the remainder after division.

1.5. Double division produces a decimal result.

char grade;. This creates a character variable for single letters.

0.0. Java initializes unassigned double variables to zero.

byte. Byte is the smallest integer type in Java.

boolean isOpen;. This creates a boolean variable for true/false values.

2,147,483,647. This is the upper limit for 32-bit signed integers.

16 bits. Short provides a smaller integer range than int.

\n. It moves output to the next line.

-. It performs mathematical subtraction operations.

double price;. This creates a double-precision floating-point variable.

double. It offers higher precision than float for decimals.

+. It joins string literals or variables together.

1. Integer division truncates the decimal portion.

int. It stores integers without decimal points.

A variable is a named storage location for data. It holds values that can change during program execution.

+. It joins string literals or variables together.

char grade;. This creates a character variable for single letters.

double price;. This creates a double-precision floating-point variable.