From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD,
	FREEMAIL_FROM,T_HK_NAME_FM_MR_MRS autolearn=no autolearn_force=no
	version=3.4.4
X-Google-Thread: a07f3367d7,27f6b2aa7fe75817,start
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!postnews.google.com!z19g2000yqk.googlegroups.com!not-for-mail
From: "Mr.Spark" <malmanea@gmail.com>
Newsgroups: comp.lang.ada
Subject: Java.Lang.NullPointerException -- Array Problem -- Couldn't fixed
Date: Wed, 24 Feb 2010 17:04:47 -0800 (PST)
Organization: http://groups.google.com
Message-ID: 
 <735e9720-4b06-46bb-8602-e04590473f57@z19g2000yqk.googlegroups.com>
NNTP-Posting-Host: 91.105.117.137
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
X-Trace: posting.google.com 1267059887 11321 127.0.0.1 (25 Feb 2010 01:04:47
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Thu, 25 Feb 2010 01:04:47 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: z19g2000yqk.googlegroups.com; posting-host=91.105.117.137;
	posting-account=9cnuMgoAAACVm1EM80Y3k6mYMNXtvlB3
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.8)
	Gecko/20100202 Firefox/3.5.8 (.NET CLR 3.5.30729),gzip(gfe),gzip(gfe)
Xref: g2news1.google.com comp.lang.ada:9313
Date: 2010-02-24T17:04:47-08:00
List-Id: <comp.lang.ada>

Hi Guys, I could not solve this problem, when I tried to throw an
exception the code will not be executed to see

the results.

I think the problem is with the array .

The Code :


import java.util.Random;

public class RunAlgorithm {

	static int n = 3; // Number of processes

	public static void main(String[] args) {

		int random_id;
		int Lowest_id;

		Random rn = new Random();
		SecurityModule[] s = new SecurityModule[n];

		// Initializing Security Modules

		for (int i = 0; i < n; i++) {
			s[i].ID = 0;
			s[i].State = false;
		}

		// Generating Random ID numbers for the Security Modules

		for (int i = 0; i < n; i++) {
			random_id = rn.nextInt(99) + 1;
			s[i].ID = random_id;                                    -- the
problem is in this line
			log("Random ID = " + random_id);

		}

		// To get the lowest ID

		Lowest_id = GetLowestID(s);
		System.out.println(" The Lowest ID is: " + Lowest_id);

		// The initiator with the lowest ID will generate a random number K
> 1

		int k = rn.nextInt(9) + 2;
		log("Round = " + k);

		// Generating a random number i in {1,2,3,...n}

		int i = rn.nextInt(3) + 1;
		log("i = " + i);
	}

	public static int GetLowestID(SecurityModule s[]) {

		int LowestID = s[0].ID;
		for (int i = 1, limit = s.length; i < limit; ++i) {
			if (s[i].ID < LowestID)
				LowestID = s[i].ID;
		}
		return LowestID;
	}



}

I hope that I can find a solution for this problem.

Thanks guys ..