Here you can find the source of sumHash(int hash, String element)
private static int sumHash(int hash, String element)
//package com.java2s; /******************************************************************************* * Copyright (c) 2012-2017 Codenvy, S.A. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors://from ww w. ja va2 s . c o m * Codenvy, S.A. - initial API and implementation *******************************************************************************/ public class Main { private static int sumHash(int hash, String element) { return hash * 31 + element.hashCode(); } }