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This article introduces the knowledge of "how to write a tool class BatchTaskRunner that executes tasks concurrently with ForkJoin". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

In actual programming, it is often necessary to execute multiple tasks concurrently and wait for the completion of these tasks to return results.

So use Java's ForkJoin to simply masturbate a utility class:

Package com.gitee.search.utils;import java.util.List;import java.util.concurrent.ForkJoinTask;import java.util.concurrent.RecursiveAction;import java.util.function.Consumer;/** * Batch task action * @ author Winter Lau * / public final class BatchTaskRunner extends RecursiveAction {protected int threshold = 5; / / number of tasks processed per thread protected List taskList; Consumer action / * * @ param taskList task list * @ param threshold tasks processed per thread * / private BatchTaskRunner (List taskList, int threshold, Consumer action) {this.taskList = taskList; this.threshold = threshold; this.action = action } / * * multithreaded batch execution of tasks * @ param taskList * @ param threshold * @ param action * / public static void execute (List taskList, int threshold, Consumer action) {new BatchTaskRunner (taskList, threshold, action). Invoke () } @ Override protected void compute () {if (taskList.size () {System.out.printf ("[% s]:% s\ n", Thread.currentThread () .getName (), tasks);})

Here we assume that there are five tasks (allTasks), where taskPerThread is the number of tasks that are specified for each thread.

And {.} is the processing logic of the task.

It's super simple.

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