package java_base; public class VariableTest { static final double PI = 3.14159; int score = 100; double facorial(int n) { double fac = 1; for(int i = 1; i <= n; i++) { fac = fac * i; } return fac; } public static void main(String[] args) { // TODO Auto-generated method stub System.out.println(VariableTest.PI); VariableTest vd = new VariableTest(); System.out.println(vd.score); System.out.println(vd.facorial(10)); System.out.println(java.lang.Math.abs(-100)); System.out.println(Math.abs(-100)); } }