de.vandermeer.skb.interfaces.strategies.collections.set.HashSetStrategy Maven / Gradle / Ivy
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Set of interfaces used by other SKB projects.
/* Copyright 2016 Sven van der Meer
*
* 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 de.vandermeer.skb.interfaces.strategies.collections.set;
import java.util.Collection;
import java.util.HashSet;
import de.vandermeer.skb.interfaces.strategies.collections.IsSetStrategy;
/**
* Strategy for a hash set.
*
* @author Sven van der Meer <[email protected]>
* @version v0.0.1 build 170404 (04-Apr-17) for Java 1.8
* @since v0.0.1
*/
public interface HashSetStrategy extends IsSetStrategy, T> {
@Override
default HashSet get(Collection collection) {
if(collection==null){
return new HashSet();
}
return new HashSet(collection);
}
@Override
default HashSet get(){
return new HashSet();
}
/**
* Creates a new hash set strategy.
* @param type for the objects in the set
* @return new hash set strategy
*/
static HashSetStrategy create(){
return new HashSetStrategy(){};
}
}