Java tutorial
//package com.java2s; /* Copyright 2008, CCTC - Computer Science and Technology Center IBB-DEB - Institute for Biotechnology and Bioengineering - Department of Biological Engineering University of Minho This is free software: you can redistribute it and/or modify it under the terms of the GNU Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This code is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Public License for more details. You should have received a copy of the GNU Public License along with this code. If not, see <http://www.gnu.org/licenses/>. Created inside the SysBio Research Group (http://sysbio.di.uminho.pt) University of Minho */ public class Main { public static double confval(int N, double alfa, double std) { return zn(alfa) * (std / Math.sqrt((double) N)); } public static double zn(double alfa) // Constant Zn - normal function { if (alfa == 0.5) return (0.67); else if (alfa == 0.68) return (1.0); else if (alfa == 0.80) return (1.28); else if (alfa == 0.90) return (1.64); else if (alfa == 0.95) return (1.96); else if (alfa == 0.99) return (2.58); return (0.0); // beware, this should never be true } }