Return true if the list is only a single element equal to single . - Android java.util

Android examples for java.util:List Element

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Description

Return true if the list is only a single element equal to single .

Demo Code

/*//  w w  w .  jav a  2 s  .  c o m
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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.java2s;
import java.util.List;

public class Main {
    /**
     * Return {@code true} if the {@code list} is only a single element equal to
     * {@code single}.
     */
    public static <T> boolean listElementsEqualTo(List<T> list, T single) {
        if (list == null) {
            return false;
        }

        return (list.size() == 1 && list.contains(single));
    }
}

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