get First Element from Iterable - Java java.util

Java examples for java.util:Iterable Element

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Description

get First Element from Iterable

Demo Code

/*/* w ww . ja  v  a  2s .c o m*/
 * Copyright 2010 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.
 */
import java.lang.reflect.Array;
import java.util.*;

public class Main{
    public static @Nullable <T> T getFirstElement(Iterable<T> iterable) {
        Iterator<T> iterator = iterable.iterator();
        Assert.that(iterator.hasNext());
        return iterator.next();
    }
}

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