Java Thread Callable executeUntilNonNullOrTimeout(final long timeoutMs, final long timeBetweenPollsMs, final Callable callable)

Description

execute Until Non Null Or Timeout

License

Open Source License

Declaration

public static <V> V executeUntilNonNullOrTimeout(final long timeoutMs, final long timeBetweenPollsMs,
            final Callable<V> callable) throws InterruptedException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.Date;

import java.util.concurrent.Callable;

public class Main {
    public static <V> V executeUntilNonNullOrTimeout(final long timeoutMs, final long timeBetweenPollsMs,
            final Callable<V> callable) throws InterruptedException {
        final long started = new Date().getTime();
        long elapsedTime = 0;
        while (elapsedTime < timeoutMs) {
            final V value;
            try {
                value = callable.call();
            } catch (Exception e) {
                throw new RuntimeException(e);
            }//from   www  .  j a  v  a 2 s . c om
            if (value != null) {
                return value;
            } else {
                elapsedTime = (new Date().getTime()) - started;
            }
            Thread.sleep(timeBetweenPollsMs);
        }
        return null;
    }
}

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