kotlinx-coroutines-jdk8/src/test/kotlin/examples/ToFuture-example.kt

/*
 * Copyright 2016-2017 JetBrains s.r.o.
 *
 * 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 examples

import kotlinx.coroutines.experimental.CommonPool
import kotlinx.coroutines.experimental.defer
import kotlinx.coroutines.experimental.delay
import kotlinx.coroutines.experimental.future.toCompletableFuture
import java.util.concurrent.TimeUnit

fun main(args: Array<String>)  {
    log("Started")
    val deferred = defer(CommonPool) {
        log("Busy...")
        delay(1, TimeUnit.SECONDS)
        log("Done...")
        42
    }
    val future = deferred.toCompletableFuture()
    log("Got ${future.get()}")
}