/** Copyright (c) 1997-1999 Bill Venners. All rights reserved.** Source code file from the book "Inside the Java 2 Virtual Machine,"* by Bill Venners, published by McGraw-Hill, 1999, ISBN: 0-07-135093-4. ** This source file may not be copied, modified, or redistributed* EXCEPT as allowed by the following statements: You may freely use* this file for your own work, including modifications and distribution* in compiled (class files, native executable, etc.) form only. You may* not copy and distribute this file. You may not remove this copyright* notice. You may not distribute modified versions of this source file.* You may not use this file in printed media without the express* permission of Bill Venners. ** BILL VENNERS MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE* SUITABILITY OF THIS SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING* BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS* FOR PARTICULAR PURPOSE, OR NON-INFRINGEMENT. BILL VENNERS SHALL NOT* BE LIABLE FOR ANY DAMAGES SUFFERED BY A LICENSEE AS A RESULT OF* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.*/// On CD-ROM in file linking/ex6/greeters/HiTime.javaimport COM.artima.greeter.Greeter;import java.util.Date;public class HiTime implements Greeter {    public void greet() {        // Date's no-arg constructor initializes itself to the        // current date and time        Date date = new Date();        int hours = date.getHours();        // Some hours: midnight, 0; noon, 12; 11PM, 23;        if (hours >= 4 && hours <= 11) {            System.out.println("Good morning, world!");        }        else if (hours >= 12 && hours <= 16) {            System.out.println("Good afternoon, world!");        }         else if (hours >= 17 && hours <= 21) {            System.out.println("Good evening, world!");        }         else if (hours >= 22 || hours <= 3) {            System.out.println("Good night, world!");        }        else {            // This should never happen.            System.out.println("Oh oh, the clock is broken, world!");        }    }}