com.amitinside.java8.practice.StaticMethodExample.java Source code

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/*******************************************************************************
 * Copyright 2015, 2016 Amit Kumar Mondal
 *
 * 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.amitinside.java8.practice;

import java.util.Optional;

import com.amitinside.java8.practice.model.IParent;
import com.google.common.base.Preconditions;

public interface StaticMethodExample {

    public static Optional<IParent> isNull(final IParent parent) {
        return Optional.of(Preconditions.checkNotNull(parent));
    }

}