Java has several data types to represent numbers, characters, and booleans. Variables are used to store data values.
Source Code
int myNum = 5; // Integer (whole number)
float myFloatNum = 5.99f; // Floating point number
char myLetter = 'D'; // Character
boolean myBool = true; // Boolean
String myText = "Hello"; // String
Choose the appropriate data type for your variables based on the data you need to store.