With the keyword static, it is called a class variable, which is not dnamic.
example
Class Sample {
int x = 1; // instance variable
static int y = 2; // class variable
public static void main(String[] args) {
Samepl sample = new Sample();
System.out.println(sample.x);
System.out.println(Sample.y);
}
}
How to refer to static variables:
Class name dot variable name
How to refer to dynamic variables:
Object dot variable name
