Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2016 Crown Copyright
 *
 * 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.
 */

public class Main {
    /**
     * Method to add a random delay or if none to yield to give any waiting
     * threads a chance. This helps make test threaded code more random to track
     * synchronized issues.
     *
     * @param millis
     *            up to the many ms
     * @return actual sleep time
     */
    public static final int sleepUpTo(final long millis) {
        try {
            if (millis > 0) {
                int realSleep = (int) Math.floor(Math.random() * (millis + 1));
                if (realSleep > 0) {
                    Thread.sleep(realSleep);
                    return realSleep;
                } else {
                    // Give any waiting threads a go
                    Thread.yield();
                    return 0;
                }
            }
        } catch (final InterruptedException e) {
            // It's not an error that we were Interrupted!! Don't log the
            // exception !
            return -1;
        }
        return 0;
    }

    public static final boolean sleep(final long millis) {
        try {
            if (millis > 0) {
                Thread.sleep(millis);
            }
        } catch (final InterruptedException e) {
            // It's not an error that we were Interrupted!! Don't log the
            // exception !
            return false;
        }

        return true;
    }

    public static final boolean sleep(final Long millis) {
        if (millis != null) {
            return sleep(millis.longValue());
        }
        return true;
    }
}