1.3 Variables and Data Types
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Vocabulary
Term | Definition |
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Variable | A symbol or container that holds a value. |
int | `int` is a Java type that represents an integer (a whole number) |
char | `char` is a Java type that represents a single character (a single letter) |
double | `double` is a Java type that represents a real number with decimal values |
Declare a variable | Declaring a variable is defining it for the first time. |
Initialize a variable | Initializing a variable is giving it an initial value, or a starting value. |
Primitive Type | Primitive types are the basic, simple data types that are inherent to Java (int, double, char, and boolean) |
Boolean | A boolean is a true or false value. |
Reference Type | Reference variables store the address of the value |
final | Prevents variables from changing value. |