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CompletableFuture详解

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CompletableFuture详解

2022-02-28 11:38:29   0  举报

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CompletableFuture详解

Java并发

CompletableFuture

模版推荐

作者其他创作

大纲/内容

创建实例

同步

completedFuture

faildFuture

异步

supplyAsync

runAsync

设置任务结果

complete

completeExpectionally

CompletionStage

核心参数

带参数，带返回

Function<T, R>-fn

BiFunction<T, U, R>-bi_fn

带参数，无返回

Consumer<T>-consumer

Consumer<T, U>-bi_consumer

无参数，无返回

Runnable-action

执行关系

串行

同步

thenAccept(consumer)

thenApply(fn)

thenRun(action)

thenCompose

异步

thenAcceptAsync(consumer)

thenApplyAsync(fn)

thenRunAsync(action)

thenComposeAsync

AND汇聚

同步

thenCombine(other, bi_fn)

thenAcceptBoth(other, bi_consumer)

runAfterBoth(other, action)

异步

thenCombineAsync(other, bi_fn)

thenAcceptBothAsync(other, bi_consumer)

runAfterBothAsync(other, action)

OR汇聚

同步

applyToEither(other, fn)

acceptEither(other, consumer)

runAftersEither(other, action)

<div>异步</div>

applyToEitherAsync(other, fn)

acceptEitherAsync(other, consumer)

runAfterEitherAsync(other, action)

异常处理

同步

whenComplete(bi_consumer)

handle(bi_fn)

exceptionally(fn)

<div>异步</div>

whenCompleteAsync(bi_consumer)

handleAsync(bi_fn)

Future

get

get()和get(long timeout, TimeUnit unit)，阻塞等待计算结果

cancel

isDone

...

其他方法

getNow

立即获取结果不阻塞，已经计算完成返回结果，否则返回设置的默认值

join

allOf

anyOf

....

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CompletableFuture

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CompletableFuture

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CompletableFuture

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需求管理全过程流程图及详解

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