nz.co.testamation.common.util.CollectionUtil Maven / Gradle / Ivy

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/*
 * Copyright 2016 Ratha Long
 *
 * 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 nz.co.testamation.common.util;

import com.google.common.collect.Ordering;

import java.util.Collection;
import java.util.Comparator;

public class CollectionUtil {

    public static  T getMax( Collection collection ) {
        if ( collection == null || collection.isEmpty() ) {
            return null;
        }

        return Ordering.from( new Comparator() {
            @Override
            public int compare( T o1, T o2 ) {
                return o1.compareTo( o2 );
            }
        } ).max( collection );
    }
}