public class Variable {

public static void main(String[] args) {

int a = 1; // Number -> integer ... -2, -1 , 0, 1, 2 ...

System.out.println(a);

double b = 1.1; // real number -> double ... -2.0, -1.0, 0, 1.0, 2.0 ...

System.out.println(b);

String c = "Hello World";

System.out.println(c);

}

}