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/*
* Copyright (c) 2013 Google Inc.
*
* 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 com.google.api.client.util;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.TreeMap;
/**
* Static utility methods pertaining to {@link Map} instances.
*
* NOTE: this is a copy of a subset of Guava's {@link com.google.common.collect.Maps}. The
* implementation must match as closely as possible to Guava's implementation.
*
* @since 1.14
* @author Yaniv Inbar
*/
public final class Maps {
/** Returns a new mutable, empty {@code HashMap} instance. */
public static HashMap newHashMap() {
return new HashMap();
}
/** Returns a new mutable, empty, insertion-ordered {@code LinkedHashMap} instance. */
public static LinkedHashMap newLinkedHashMap() {
return new LinkedHashMap();
}
/**
* Returns a new mutable, empty {@code TreeMap} instance using the natural ordering of its
* elements.
*/
public static , V> TreeMap newTreeMap() {
return new TreeMap();
}
private Maps() {}
}