import java.io.*; public class Class1 { private static int m; public static void main(String[] args) { A(1); System.out.println(m); } private static boolean B(int k) { m+=k; if(m>=4) return true; else return false; } public static void A(int i) { if(B(i)) m*=i; else m+=i; } } 结果为: