Spring Framework example source code file (CollectionFactoryTests.java)

This example Spring Framework source code file (CollectionFactoryTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

collectionfactorytests, concurrenthashmap, concurrenthashmap, concurrentmap, identityhashmap, linkedhashmap, linkedhashmap, linkedhashset, linkedhashset, map, map, set, testcase, util

The Spring Framework CollectionFactoryTests.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.core;

import java.util.IdentityHashMap;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;

import junit.framework.TestCase;

/**
 * @author Darren Davison
 * @author Juergen Hoeller
 */
public class CollectionFactoryTests extends TestCase {

	public void testLinkedSet() {
		Set set = CollectionFactory.createLinkedSetIfPossible(16);
		assertTrue(set instanceof LinkedHashSet);
	}

	public void testLinkedMap() {
		Map map = CollectionFactory.createLinkedMapIfPossible(16);
		assertTrue(map instanceof LinkedHashMap);
	}

	public void testIdentityMap() {
		Map map = CollectionFactory.createIdentityMapIfPossible(16);
		assertTrue(map instanceof IdentityHashMap);
	}

	public void testConcurrentMap() {
		Map map = CollectionFactory.createConcurrentMapIfPossible(16);
		assertTrue(map.getClass().getName().endsWith("ConcurrentHashMap"));
	}

	public void testConcurrentMapWithExplicitInterface() {
		ConcurrentMap map = CollectionFactory.createConcurrentMap(16);
		assertTrue(map.getClass().getSuperclass().getName().endsWith("ConcurrentHashMap"));
		map.putIfAbsent("key", "value1");
		map.putIfAbsent("key", "value2");
		assertEquals("value1", map.get("key"));
	}

}