compiled, will not execute, it did last year

[PROFESSORSPARKIE]

I am an experienced programmer in several other languages but seem to have mixed experiences in java. Attached is a program screen of compilation and attempted execution with an error.

This is program executed in the past but now gives me an error on 3 different systems using the same java release from before. I don’t understand the message at execution time. Another similar program has the same problem.

Any suggestion? Where & how should I get more detailed info on error messages?

Thanks in advance
From Sparks
--------------------------------------------------------------
command line:

f:\JAVA_RUN\bin>f:\JAVA_run\bin\javac.exe f:\JAVA\Inv_rpt.java
(no error)
f:\JAVA_RUN\bin>f:\JAVA_run\bin\java.exe f:\JAVA\Inv_rpt
Exception in thread “main” java.lang.NoClassDefFoundError: f:\JAVA\Inv_rpt

I have tried with -classpath parameter with no difference.


--------------------------------------------------------------
Program:

//********************************************************************
// INVENTORY REPORT PROGRAM IN JAVA Author: Prof. Morris Sparks
//
// DEMONSTRATES THE READING OF A CHARACTER TEXT FILE
// USING A STANDARD INPUT DATA STREAM.
//********************************************************************
// THE INPUT DATA RECORD FORMAT IS:
// ---------------------------------
// part_id from actual input columns 1- 6 start relative 0
// part_desc from actual input columns 7-26 start relative 6
// unit_cost from actual input columns 27-30 start relative 26
// unit_sell from actual input columns 31-34 start relative 30
// on_hand from actual input columns 35-38 start relative 34
// on_order from actual input columns 39-42 start relative 38
// order_point from actual input columns 43-46 start relative 42
//
// THE OUTPUT PRINT RECORD FORMAT IS:
// ----------------------------------
// part_id from input record
// part_desc from input record
// on_hand from input record
// on_order from input record
// order_point from input record
// unit_cost from input record
// unit_sell from input record
// total_cost from calculation on_hand * unit_cost
// total_sell from calculation on_hand * unit_sell
// order_amount from calculation order_point - (on_hand + on_order)
// with selection (on_hand + on_order)/order_point>.50
// profit_ratio from calculation unit_sell / unit_cost
// with selection of < 1.32
//*********************************************************************
import java.io.*;
import java.util.StringTokenizer;
import java.util.Date;
import java.text.DecimalFormat;
//import java.util.Calendar;

public class Inv_rpt
{
//-----------------------------------------------------------------
// Reads data about a store inventory from an input file,
// creating an array of InventoryItem objects, then prints them.
//-----------------------------------------------------------------
public static void main (String[] args)
{

// **********************************************
// * Define the required variables & work areas *
// **********************************************

String Myfile = "\\JAVA\\inv_rpt.txt";
String line;
String part_id, part_desc, unit_cost, unit_sell;
String on_hand, on_order, order_point;
String Print_work, hold;
String work_pad = " ";
int uct, ust, oht, oot, opt, oh, oo, op;
int page_num = 1;
int work_length, work_size;
DecimalFormat fmt1, fmt2, fmt3, fmt4;
float total_cost = 0, total_sell = 0;
float final_cost = 0, final_sell = 0;
float uc, us, profit_ratio, order_amount, per_cent;
float work1, work2, work3, work4, work5;
float page_total_cost = 0, page_total_sell = 0;
float final_total_cost = 0, final_total_sell = 0;
Date current_time;

// set up hex-char strean to printer for landscape mode - 27 38 108 49 79
// set up hex-char strean to printer from landscape mode - 27 38 108 48 79
// byte b1 = 27, b2 = 38, b3 = 108, b4 = 49, b5 = 79;
byte b1 = 0x1B, b2 = 0x26, b3 = 0x6C, b4 = 0x31, b5 = 0x4F;

fmt1 = new DecimalFormat("####");
fmt2 = new DecimalFormat("#0.00");
fmt3 = new DecimalFormat("##,###,##0.00");
fmt4 = new DecimalFormat("0.00");
current_time = new Date();

work_size = work_pad.length();

// **********************************************
// * DEFINE & OPEN THE INVENTORY DATA FILE. *
// **********************************************

try
{
FileReader fr = new FileReader (Myfile);
BufferedReader inFile = new BufferedReader (fr);
line = inFile.readLine();
// **********************************************
// * PRINT REPORT HEADINGS ON FIRST PAGE. *
// **********************************************

// System.out.print(b1 + b2 + b3 + b4 + b5);
System.out.print(" ");
System.out.print(" SPARKS CORP.");
System.out.println(" ");


System.out.print(" ");
System.out.print("INVENTORY STATUS REPORT");
System.out.println(" PAGE " + page_num);

System.out.print(" ");
System.out.print(" " + current_time);
System.out.println(" ");

System.out.print ("===================================================");
System.out.println("=============================+======================");
System.out.print(" PART PART ");
System.out.print(" ON ON ORDER UNIT UNIT");
System.out.println(" TOTAL TOTAL ORDER PROFIT");

System.out.print(" NO DESCRIPTION ");
System.out.print(" HAND ORDER POINT COST SELL");
System.out.println(" COST SELL POINT RATIO");
System.out.print ("===================================================");
System.out.println("==============================+=====================");

// ************************************************
// * LOOP PROCESS TO READ EACH INPUT DATA RECORD. *
// ************************************************
while (line != null)
{
try
{
part_id = line.substring( 0, 6);
part_desc = line.substring( 6,26);

unit_cost = line.substring(26,30);
uct = Integer.parseInt(unit_cost);
work1 = uct;
work1 = work1 / 100;

unit_sell = line.substring(30,34);
ust = Integer.parseInt(unit_sell);
work2 = ust;
work2 = work2 / 100;

on_hand = line.substring(34,38);
oht = Integer.parseInt(on_hand);
work3 = oht;

on_order = line.substring(38,42);
oot = Integer.parseInt(on_order);
work4 = oot;

order_point = line.substring(42,46);
opt = Integer.parseInt(order_point);
work5 = opt;

total_cost = work1 * work3;
page_total_cost = page_total_cost + total_cost;
final_total_cost = final_total_cost + total_cost;

total_sell = work2 * work3;
page_total_sell = page_total_sell + total_sell;
final_total_sell = final_total_sell + total_sell;

final_cost = final_cost + total_cost;
final_sell = final_sell + total_sell;

order_amount = opt - (oht + oot);
per_cent = ((work3 + work4) * 100) / work5;

profit_ratio = work2 / work1 ;
//*********************************************************************
System.out.print(part_id + " ");
System.out.print(part_desc + " ");

Print_work = fmt1.format(oht);
hold = work_pad + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-5+1,work_size);
System.out.print(Print_work + " ");

Print_work = fmt1.format(oot);
hold = work_pad + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-5+1,work_size);
System.out.print(Print_work + " ");

Print_work = fmt1.format(opt);
hold = work_pad + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-5+1,work_size);
System.out.print(Print_work + " ");

Print_work = fmt2.format(work1);
hold = work_pad + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-6+1,work_size);
System.out.print(Print_work + " ");

Print_work = fmt2.format(work2);
hold = work_pad + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-6+1,work_size);
System.out.print(Print_work + " ");
//*********************************************************************
Print_work = fmt3.format(total_cost);
hold = work_pad + "$" + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-14+1,work_size);
System.out.print(Print_work + " ");
//*********************************************************************
Print_work = fmt3.format(total_sell);
hold = work_pad + "$" + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-14+1,work_size);
System.out.print(Print_work + " ");
//*********************************************************************
if (per_cent > 50.0)
{System.out.print(" ");}
else
{Print_work = fmt1.format(order_amount);
hold = work_pad + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-5+1,work_size);
System.out.print(Print_work + " ");
System.out.print(" ");
}
//*********************************************************************
if (profit_ratio < 1.32)
{System.out.print(fmt4.format(profit_ratio) + " ");}
else
{System.out.print(" ");}
//*********************************************************************
System.out.println(" *");

}
catch (NumberFormatException exception)
{
System.out.println ("Error in input. Line ignored:");
System.out.println (line);
}
line = inFile.readLine();
}

//*********************************************************************
// print page totals
System.out.print(" ");
System.out.print("PAGE TOTALS => ");
Print_work = fmt3.format(page_total_cost);
hold = work_pad + "$" + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-14+1,work_size);
System.out.print(Print_work + " ");
Print_work = fmt3.format(page_total_sell);
hold = work_pad + "$" + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-14+1,work_size);
System.out.print(Print_work + " ");
System.out.println(" ");
//*********************************************************************
// print final totals
System.out.print(" ");
System.out.print("FINAL TOTALS => ");
Print_work = fmt3.format(final_total_cost);
hold = work_pad + "$" + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-14+1,work_size);
System.out.print(Print_work + " ");

Print_work = fmt3.format(final_total_sell);
hold = work_pad + "$" + Print_work;
work_size = hold.length();
Print_work = hold.substring(work_size-14+1,work_size);
System.out.print(Print_work + " ");
System.out.println(" ");

inFile.close();

}
catch (FileNotFoundException exception)
{
System.out.println ("The file " + Myfile + " was not found.");
}
catch (IOException exception)
{
System.out.println (exception);
}
}
}


Computer thought: I teach a lot of programming so I can learn. You can never learn it all.

 

[Diancecht]

I'd try

f:\JAVA>f:\JAVA_run\bin\javac.exe   Inv_rpt.java
f:\JAVA>f:\JAVA_run\bin\java.exe    Inv_rpt

Cheers,
Dian

 

[PROFESSORSPARKIE]

To Diancecht,

I installed java in a folder JAVA_RUN so that appl programs would be in the JAVA folder.

The set up works perfectly for other programs. I have checked "case" spelling and tried different combinations of name structure. The program & naming worked earlier & now I am at a loss. The problem is I do not know what the error

f:\JAVA_RUN\bin>f:\JAVA_run\bin\java.exe f:\JAVA\Inv_rpt
Exception in thread "main" java.lang.NoClassDefFoundError: f:\JAVA\Inv_rpt

is telling me. He finds the compiler, the class file but has problems in the execution sequence.

Sparkie

Computer thought: I teach a lot of programming so I can learn. You can never learn it all.

 

[stefanwagner]

You don't need the .exe, just if there is a .bat or .com with the same name in your PATH before the exe.

For java, you call a class by its name, not by it's path. Part of its name is a package-declaration, if any. Here is none.

The class is searched for in the directories and jars of the classpath, if such is defined, and the current directory.

f:\JAVA_RUN\bin>f:\JAVA_run\bin\java -cp f:\JAVA Inv_rpt

java -help will tell you what you need. It is very brief, but very accurate in its briefness.


don't visit my homepage:

http://home.arcor.de/hirnstrom/minis/index.html

 

[PROFESSORSPARKIE]

To Stefanwagner & To Diancecht,

Stef & Dian your lines helped - The default folders last must have been different. I was sure that by fully qualifying each file then I would override any defaults. I was wrong - Thanks tons.

The -help wasn't much help but the rest was super.

Keep up the good work.

Sparkie

Computer thought: I teach a lot of programming so I can learn. You can never learn it all.

 

[PROFESSORSPARKIE]

To Stefanwagner & To Diancecht,

Please look at my other post of executing an application as an Applet.

Again thanks.

Sparkie



Computer thought: I teach a lot of programming so I can learn. You can never learn it all.