Learn / Java / Variables and Types

Beginner 14 min

Variables and Types

Primitives, Strings, final, and basic operators.

What you will learn

  • Declare typed variables
  • Use String concatenation
  • Know int vs long vs double
java
int count = 3;
double price = 9.99;
String title = "Widget";
final int MAX = 100;

System.out.println(title + " costs " + price);

Try it yourself

Declare variables for a product SKU, quantity, and unit price; print total.