Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.TimeUnit;

public class Main {
    /**
     * Graceful shutdown.
     *
     * @param pool the pool
     * @param shutdownTimeout the shutdown timeout
     * @param shutdownNowTimeout the shutdown now timeout
     * @param timeUnit the time unit
     */
    public static void gracefulShutdown(ExecutorService pool, int shutdownTimeout, int shutdownNowTimeout,
            TimeUnit timeUnit) {
        pool.shutdown(); // Disable new tasks from being submitted
        try {
            // Wait a while for existing tasks to terminate
            if (!pool.awaitTermination(shutdownTimeout, timeUnit)) {
                pool.shutdownNow(); // Cancel currently executing tasks
                // Wait a while for tasks to respond to being cancelled
                if (!pool.awaitTermination(shutdownNowTimeout, timeUnit)) {
                    System.err.println("Pool did not terminate");
                }
            }
        } catch (InterruptedException ie) {
            // (Re-)Cancel if current thread also interrupted
            pool.shutdownNow();
            // Preserve interrupt status
            Thread.currentThread().interrupt();
        }
    }
}