/******************************************************************************* * Copyright (c) 2008 IBM Corporation and others. * 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: * IBM Corporation - initial API and implementation *******************************************************************************/ import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import java.util.Map.Entry; /** * Tests built in logical structures. */ public class LogicalStructures { public static void main(String[] args) { Map map = new HashMap(); map.put("one", new Integer(1)); map.put("two", new Integer(2)); List list = new ArrayList(); list.add("three"); list.add("four"); Set set = map.entrySet(); Entry entry = (Entry) set.iterator().next(); entry.getKey(); } }