Here you can find the source of areEqual(String s1, String s2)
public static boolean areEqual(String s1, String s2)
//package com.java2s; /******************************************************************************* * Copyright (c) 2008 The University of York. * 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 * // w w w . j a va 2 s. c o m * Contributors: * Dimitrios Kolovos - initial API and implementation ******************************************************************************/ public class Main { public static boolean areEqual(String s1, String s2) { return toString(s1).equalsIgnoreCase(toString(s2)); } public static String toString(Object o) { if (o != null) { return o.toString(); } else { return ""; } } public static String toString(Object o, String default_) { if (o != null) { return o.toString(); } else { return default_; } } }