Problem Programing

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Kenneth Rinderhagen>cd C:\
C:\>java HelloWorldApp
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldApp
Caused by: java.lang.ClassNotFoundException: HelloWorldApp
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
C:\>

{color:0000ff}http://java.sun.com/docs/books/tutorial/getStarted/problems/index.html{color}

Similar Messages

Problem: program outputs numbers in scientific notation

my problem is that my program outputs the population in scientific notation instead of round the number to the nearest one. ex: it should say 30787949.57 instead of 3.078794957 E7
// Calculates the poulation of Mexico City from 1995 to 2018.
// displays the year and population
class PopulationCalculator {
static double r2(double x) {
     //this method rounds a double value to two decimal places.
double z=((double)(Math.round(x*100)))/100;
return z;
} //end method r2
public static void main(String args[]) {
     double population=15600000.0;
     double rate=0.03;
     System.out.println("Mexico City Population, rate="+r2(rate));
     System.out.println("Year    Population");
     for (int year=1995; year<=2018;year++) {
         System.out.println(year+ "    "+r2(population));
    population+=rate*population;
    }//end for loop
    System.out.println("The population of Mexico City reaches 30 million on 02/13/17 at 5:38:34am");
    }//end main
    }//end PopulationCalculator
{code/]

A: problem: program outputs numbers in scientific notation

Or upgrade to JDK 5.0 and user the new java.util.Formatter capability.
You control the rounding and get localization of the fomatted string at
no extra charge. A quick example:
class A {
    public static void main(String[] args) {
        double d = 30787949.57d;
        System.out.println(java.lang.String.format("%,17.2f", d));
}Example output for three different locales:
$ javac -g A.java
$ LC_ALL=fr_FR   java A
    30 787 949,57
$ LC_ALL=en_NZ   java A
    30,787,949.57
$ LC_ALL=it_IT     java A
    30.787.949,57For more information, refer to:
http://java.sun.com/j2se/1.5.0/docs/relnotes/features.html#formatter

Need HELP with objects and classes problem (program compiles)

Alright guys, it is a homework problem but I have definitely put in the work. I believe I have everything right except for the toString method in my Line class. The program compiles and runs but I am not getting the right outcome and I am missing parts. I will post my problems after the code. I will post the assignment (sorry, its long) also. If anyone could help I would appreciate it. It is due on Monday so I am strapped for time.
Assignment:
-There are two ways to uniquely determine a line represented by the equation y=ax+b, where a is the slope and b is the yIntercept.
a)two diffrent points
b)a point and a slope
!!!write a program that consists of three classes:
1)Point class: all data MUST be private
a)MUST contain the following methods:
a1)public Point(double x, double y)
a2)public double x ()
a3public double y ()
a4)public String toString () : that returns the point in the format "(x,y)"
2)Line class: all data MUST be private
b)MUST contain the following methods:
b1)public Line (Point point1, Point point2)
b2)public Line (Point point1, double slope)
b3)public String toString() : that returns the a text description for the line is y=ax+b format
3)Point2Line class
c1)reads the coordinates of a point and a slope and displays the line equation
c2)reads the coordinates of another point (if the same points, prompt the user to change points) and displays the line equation
***I will worry about the user input later, right now I am using set coordinates
What is expected when the program is ran: example
please input x coordinate of the 1st point: 5
please input y coordinate of the 1st point: -4
please input slope: -2
the equation of the 1st line is: y = -2.0x+6.0
please input x coordinate of the 2nd point: 5
please input y coordinate of the 2nd point: -4
it needs to be a diffrent point from (5.0,-4.0)
please input x coordinate of the 2nd point: -1
please input y coordinate of the 2nd point: 2
the equation of the 2nd line is: y = -1.0x +1.0
CODE::
public class Point{
     private double x = 0;
     private double y = 0;
     public Point(){
     public Point(double x, double y){
          this.x = x;
          this.y = y;
     public double getX(){
          return x;
     public double setX(){
          return this.x;
     public double getY(){
          return y;
     public double setY(){
          return this.y;
     public String toString(){
          return "The point is " + this.x + ", " + this.y;
public class Line
     private double x = 0;
     private double y = 0;
     private double m = 0;
     private double x2 = 0;
     private double y2 = 0;
     public Line()
     public Line (Point point1, Point point2)
          this.x = point1.getX();
          this.y = point1.getY();
          this.x2 = point2.getX();
          this.y2 = point2.getY();
          this.m = slope(point1, point2);
     public Line (Point point1, double slope)
          this.x = point1.getX();
          this.y = point1.getY();
     public double slope(Point point1, Point point2)//finds slope
          double m1 = (point1.getY() - point2.getY())/(point1.getX() - point2.getX());
          return m1;
     public String toString()
          double temp = this.x- this.x2;
          return this.y + " = " +temp + "" + "(" + this.m + ")" + " " + "+ " + this.y2;
          //y-y1=m(x-x1)
public class Point2Line
     public static void main(String[]args)
          Point p = new Point(3, -3);
          Point x = new Point(10, 7);
          Line l = new Line(p, x);
          System.out.println(l.toString());
}My problems:
I dont have the right outcome due to I don't know how to set up the toString in the Line class.
I don't know where to put if statements for if the points are the same and you need to prompt the user to put in a different 2nd point
I don't know where to put in if statements for the special cases such as if the line the user puts in is a horizontal or vertical line (such as x=4.7 or y=3.4)
Edited by: ta.barber on Apr 20, 2008 9:44 AM
Edited by: ta.barber on Apr 20, 2008 9:46 AM
Edited by: ta.barber on Apr 20, 2008 10:04 AM

Sorry guys, I was just trying to be thorough with the assignment. Its not that if the number is valid, its that you cannot put in the same coordinated twice.
public class Line
     private double x = 0;
     private double y = 0;
     private double m = 0;
     private double x2 = 0;
     private double y2 = 0;
     public Line()
     public Line (Point point1, Point point2)
          this.x = point1.getX();
          this.y = point1.getY();
          this.x2 = point2.getX();
          this.y2 = point2.getY();
          this.m = slope(point1, point2);
     public Line (Point point1, double slope)
          this.x = point1.getX();
          this.y = point1.getY();
     public double slope(Point point1, Point point2)//finds slope
          double m1 = (point1.getY() - point2.getY())/(point1.getX() - point2.getX());
          return m1;
     public String toString()
          double temp = this.x- this.x2;
          return this.y + " = " +temp + "" + "(" + this.m + ")" + " " + "+ " + this.y2;
          //y-y1=m(x-x1)
public class Point2Line
     public static void main(String[]args)
          Point p = new Point(3, -3);
          Point x = new Point(10, 7);
          Line l = new Line(p, x);
          System.out.println(l.toString());
}The problem is in these lines of code.
public double slope(Point point1, Point point2) //if this method finds the slope than how would i use the the two coordinates plus "m1" to
          double m1 = (point1.getY() - point2.getY())/(point1.getX() - point2.getX());
          return m1;
     public String toString()
          double temp = this.x- this.x2;
          return this.y + " = " +temp + "" + "(" + this.m + ")" + " " + "+ " + this.y2;
          //y-y1=m(x-x1)
     }if slope method finds the slope than how would i use the the two coordinates + "m1" to create a the line in toString?

J2sdk installation problem-Program too big to fit in memory

I downloaded the J2SDK software from sun website. The file name is
j2sdk-1_4_1-windows-i586.exe.
The file size matches with the one specified in the website.
However I am unable to install the package either from 'my computer' or from dos.I have WIN 2000 as my OS.
I get the following error: in dos
"Program too big to fit in memory". The screen
output is as under :
G:\>dir
Volume in drive G is NEW
Volume Serial Number is AE64-CACE
Directory of G:\
09/29/2002 10:03p 37,724,482 j2sdk-1_4_1-windows-i586.exe
1 File(s) 37,724,482 bytes
0 Dir(s) 0 bytes free
G:\>j2sdk-1_4_1-windows-i586
Program too big to fit in memory
G:\>
I shall be glad if you will guide me to intall the package as I am very
anxious to use it to learn servlet progamming.
Thanks.

G:\>j2sdk-1_4_1-windows-i586
Program too big to fit in memoryThis error is complaining about memory, not disk space. But I suspect that the problem is disk space. This is copied from the Window 32-bit installation instructions:
A Pentium 166MHz or faster processor with at least 32 megabytes of physical RAM is required to run graphically based applications. Forty-eight megabytes of RAM is recommended for applets running within a browser using the Java Plug-in product. Running with less memory may cause disk swapping which has a severe effect on performance. Very large programs may require more RAM for adequate performance.
You should have 120 megabytes of free disk space before attempting to install the Java 2 SDK software.

Installation problem: Program too big to fit in memory

I have downloaded the installation file several times now and tried to run the executable on an NT 4 SP 5, a W2K, and a Win98 system, and all I ever get is "Program too big to fit in memory". I have looked at the byte count, and it's exactly the same as specified on the download page. What could be wrong?
TIA,
Stefan
(Please cc: your answers to mailto:[email protected])

System problems - programs won't open

all of a sudden my computer is sick, here are just some of the symptoms:
1) programs won't open (ie Itunes, Empty Trash) or take forever as in hours or days (Iphoto, Disk Utility). Basically evertything I use except Safari gets frozen.
2) when I try to switch between user accounts I get a frozen blue screen.
The only way out of the freeze-ups is to unplug the computer and wait at least ten minutes to reboot, but the problems remain. I was finally able to run Disk Utility to repair permissions on the internal Hard Drive but to no avail.
Some details of my case:
OS X 10.5.8
221GB used , and 44.8 GB free space on the internal Hard Drive
I have 4 external Hard Drives for all my various media and backups including one with 650GB of Itunes Music. This drive takes forever to be recognized.

You'll probably get better advice if you post in the Mac forums.
This is iTunes for Windows.

Hi, I have a problem programming with the JavaCard

Hello,
I am new to JavaCard programming.
I have a problem stucked in adding new class to the sample program "wallet".
I want to add a tag-on / off function that allows the calculation of journey fee when the card holder tags off.
I have no idea of writing the program.
Can anyone give me some ideas or tips?
Thank you.

See:
* http://windows.microsoft.com/en-US/windows7/The-Language-bar-overview The Language bar (overview)
It is possible that you have switched the keyboard layout by accident.
* Make sure that you have the Language bar visible on the Windows Taskbar.
* You can do that via the right-click context menu of the Taskbar: Toolbars > Language Bar.
* Check the keyboard language (keyboard layout) setting for the application that has focus via the icon on the Language bar.
* You need to do that while Firefox has focus because Windows remembers the keyboard layout setting per application.
* The default keys to rotate the layout is a combination (Ctrl+Shift or Alt+Shift) that can easily be used in Firefox to activate a menu item.
* To avoid an unintentional switch assign a specific key sequence (Alt/Ctrl+Shift+number) to select keyboard layouts and remove the key combination to rotate layouts (Alt+Shift or Ctr+Shift)
Control Panel > Regional and Language Options > Keyboards and Languages > Change keyboards > Advanced key settings > Change key sequence

Problem: Programs (such as TextEdit) focus to a moved file

I've found serious problems with a new "feature" of Lion (or at least of TextEdit, I haven't tried to replicate the problem with other programs).
The feature is that if you have a file open in TextEdit, then rename the file in Terminal, Finder, or other program, then TextEdit will switch to the moved file. That is, if you have a file called "hello.txt" open in TextEdit, and move the file to "hello2.txt", the TextEdit will switch to "hello2.txt".
Now, this creates plenty of problems when using other programs.
For instance, if I modify the file with another text editor called Emacs, Emacs will create a backup file. Guess what TextEdit will do? It will switch to the backup file.
If there's a conflict in Dropbox, Dropbox will create a "deleted"-file of the conflict. TextEdit will switch to the "deleted"-file.
I'm sure many other programs create similar issues, as I found these problems within a day of using Lion's TextEdit.

Humm well you probably don't want to disconnect your WiFi every time you run this application but i was going to say try putting it in airplane mode

Problem programming

Well, I am a freshman in college and I am taking up the computer science major. We just got our first project this week and we need to create a program that you can input your name and birth date and it will out-put it on 1 line. I cant seem to get my program to work though. I am having problems converting a string to an integer. You can see that I am using parseInt(), but I am stuck on what I need to enter in the brackets. Can someone help me?
import javax.swing.*;
import java.util.*;
import java.text.*;
class Project1{
     public static void main( String[] args) {
          String     name, first, middle, last, space, bdate;
          space = " ";
          SimpleDateFormat sdf;
          GregorianCalendar date;
          int month, day, year;
          //Input the full name
          name      =JOptionPane.showInputDialog(null, "Enter your full name (first, middle, last):");
          //Extract the first and last names
          first     = name.substring(0, name.indexOf(space));
          last     = name.substring(name.indexOf(space)+1, name.length());
          //Input birthdate here
          bdate     =JOptionPane.showInputDialog(null, "Enter your Birthdate (month, day, year):");
          //Convert letters to numbers
          month     =Integer.parseInt();
          day     =Integer.parseInt();
          year     =Integer.parseInt();
          //Creates Date object
          date     = new GregorianCalendar(month. day, year);
          //formats the date
          sdf      = new SimpleDateFormat("EEEE MMMM dd, yyyy");
          //The output result
          JOptionPane.showMessageDialog(null, last + ", " + first + " " + "was born on" + " " + sdf.format(date.getTime));
Edited by: Creative404 on Sep 24, 2007 1:56 PM

The code you've pasted here won't compile.
String name, first, middle, last, space, bdate;
space = " ";Notice the semi-colon at the end of bdate. That is a statement terminator. If you are going to use that there then you must specify a datatype for the variable 'space' on the next line.
String name, first, middle, last, space, bdate;
String space = " ";There may be other issues as well but that was all I noticed at quick glance.

Compressor making problem Program Stream Mpeg2s?

I'm having an ongoing discussion with the manufacturer of our video playback server (Leightronix Nexus) at our station. The box uses Mpeg2 Program Streams for playback.
I have Compressor 3.0.2. The Nexus playback is having occasional stutter problems playing back the Mpeg2 fies created by Compressor. I've verified bitrate, compressor settings, reimported the original footage, etc, but nothing seems to help. Finally I got a response back from Leightronix that reads:
"The problem is Compressor is not very good at creating a MPEG-2 Program stream file. Use ffmpegX to convert your MPEG-2 transport stream from Compressor to a MPEG-2 Program stream that will play fine on the NEXUS."
I'm trying to get additional technical information from them on exactly what Compressor is or is not doing, but I'd thought I'd ask first if anyone else has had issues with the Mpeg2 PS output from Compressor for anything they're doing? All these files play fine on the Mac itself, it's just when they actually air for us.
Kris

Further information about this problem ... the issue is that Compressor is creating a VBR file which has some problems. In portions of the video where there is a mostly white background or mostly black background (say a white screen with a single word of text), and creating an Mpeg2 Program Stream with VBR (6 min, 7.2 max), the algorithm will cause the bitrate to go way below the minimum during that portion of the file. Quicktime will play it correctly but other playback machines have a problem with it.
We were able to get around the problem by just setting Compressor to CBR @ 7.2 but it's still an issue. If anyone at Apple wants a copy of the Quicktime MOV we were converting, contact me at [email protected] and I'll get it to you.
Kris

Problem: program gives error when I run it

When i run the program an input box pops up and the user types in onehalfday or onefullday depending on the number of the item and time period chosen by the user then the program is supposed to use system.out.println( ) to display the price of the item.
With my program after the user types in onehalfday or onefullday in the innput box it displays this error:
Exception in thread "main" java.lang.NumberFormatException: For input string: "onehalfday"
at java.lang.Integer.parseInt(Integer.java:468)
at java.lang.Integer.parseInt(Integer.java:518)
at EddiesEquipmentRental.main(EddiesEquipmentRental.java:36)
Here is my source code. Please post your ideas.
//Calculates a bill for the user depending on the price chosen
// ----------- EddiesEquipmentRental ----------
import javax.swing.JOptionPane;
import java.awt.*;
public class EddiesEquipmentRental
public static void main(String[] args)//main method, an exception called automatically when the program starts
System.out.println("Welcome to Eddie's Equipment Rental");
System.out.println("Piece of Equipment Half Day Full Day");//displays piece of equipment and period of day
System.out.println("1. Rug Cleaner $16.00 $24.00");//displays items and prices
System.out.println("2. Lawn Mower $12.00 $18.00");//displays items and prices
System.out.println("3. Paint Sprayer $20.00 $30.00");//displays items and prices
//input variable is declared
int input;
int deposit;//deposit variable is declared
int result;//result variable is declared
String inputvalue;//declares the String InputValue
String s2;
String s1 ;
s1=JOptionPane.showInputDialog(null, "Spell out the number of the item followed by half day or full day ");
input=Integer.parseInt(s1);
int onehalfday;
int onefullday;
int twofullday;
int twohalfday;
int threehalfday;
int threefullday;
onehalfday= 46;
onefullday= 54;
twohalfday= 32;
twofullday= 48;
threefullday = 60;
threehalfday=50;
if (input == onehalfday) {
System.out.println( "The total is " + input ) ;
} else if (input == onefullday) {
System.out.println( "The total is " + input) ;
} else if (input == twohalfday) {
System.out.println( "The total is " + input ) ;
} else if (input == twofullday) {
System.out.println( "The total is " + input ) ;
} else if (input == threefullday){
System.out.println( "The total is " + input ) ;
} else if (input == threehalfday) {
System.out.println( "The total is " + input ) ;
} else {
System.out.println("Invalid Entry. Try Again.");
} // needs if statements here
System.exit(0);
Please post your ideas.

When you post code, please wrap it in [code][/code] tags so it's easy to read.
You're trying to parse a number out of a string that doesn't have the format of a number.
parseInt looks for strings like this: "342", not like this: "one", and especially not "onehalfday".
If you're getting user input, you may be better off putting a pull-down list in the GUI, and/or radiobuttons, rather than asking the user to type in a number in the correct format.

Problem programming Timed Loop period

I was trying to use the Time Loop in a FPGA target. I lost all day trying to figure out why the Time-Loop worked at a fixed period instead of the period I programmed. Finally I found out in this website that the time-loop works different in a FPGA target than in a normal VI. National Instruments should add a hint on the "Context Help" about this.
Isaac

Dear
Issac,
When you code VI for the
FPGA target you should always thing that you are very close of the hardware.
As mentioned in the context help and the help of LabVIEW, If you use the Timed Loop in an FPGA VI, the loop
executes one subdiagram at the same period as an FPGA clock.
The SCTL provides faster
execution of the LV FPGA diagram, allowing each cycle of the loop to execute in
one clock cycle. This enables up to update a signal line at the FPGA base clock
frequency. The SCTL also optimizes the code generation so that the code on
the FPGA is more efficient and uses less FPGA real estate. However, there are
several restrictions on the code implemented inside of a SCTL
To have more details
about the timed loop (SCTL) you can have a look at the following link :
Chapter 7 of LabVIEW 8 FPGA Module Training
help:Timed Loop (FPGA Module)
Using Single-Cycle Timed Loops to Optimize FPGA VIs (FPGA Module)
Best regards,
Nick_CH

Apple's policy on problem programs?

Okay it's been pretty well established that iTunes 7 has some pretty major faults, so does anyone know what Apple's policy with these matters is? I.e. is there an iTunes 7.1 on the cards now?

Again, we are fellow users, so we would not know. It could vary to a month or two, even a year. When it came to the chkdsk error, it was a year before that was fixed. I really can't say anything else as any speculation in these forum is against the "terms of use". Sorry.

Problems with programming submit button and attachment upload

i have a problem programming the upload "athachments" and i
would like to know how to program the submit button to go to an
email address. once the form is filled out i want the information
to go into my email inbox. what script or coding to i need to add
to the page to make these two things i mentioned above happen?the
code for the page and where does it go. that is the reason for my
questioning on how to program the two buttons and place the code in
the html where it belongs so the page will function right and go to
the email adress that i need it to go in.
http://worldofexotics.com/submit.htm

> There are only two ways to process form data -
You understand that, right? You are asking about how to
process form data -
and I am saying that there are only 2 ways to do that.
> 1. Use mailto:[email protected] as the action of the form
You understand that? Each form has an action -
<form action="..."
--------------------^^^
The contents of that action attribute tells the browser what
to do when the
form's submit button is successfully pressed.
In other words, you could have <form
action=mailto:[email protected]
That would be ONE way to do it - but there are many
disadvantages, as
explained further in my post. The other way is method 2 -
> Use a server-side scripting method to a) harvest the
form's data, b)
> process it in some manner, e.g., enter it into a
database, c) formulate
> and
> send an email to one or more email recipients, and d)
redirect the visitor
> to some ending page
To do that, you'd have to *have* some server-side script -
there are quite a
few of them to choose from but the normal host usually also
supplies one as
part of your hosting package.
> You would have to decide which of these methods is best
for your needs,
> but if it's Method 2, then start by asking your host
what they provide for
> form processing.
Do you undertand that?
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
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- Macromedia (MM) Technotes
==================
"jayney" <[email protected]> wrote in message
news:[email protected]...
> Hi I have been sent this answer but i am still none the
wiser
>
> Can you work it out? this is the answer
> below.............................
>
> There are only two ways to process form data -
>
> 1. Use mailto:[email protected] as the action of the form
> 2. Use a server-side scripting method to a) harvest the
form's data, b)
> process it in some manner, e.g., enter it into a
database, c) formulate
> and
> send an email to one or more email recipients, and d)
redirect the visitor
> to some ending page
>
> Method 1 is quite simple, and is also the least
reliable. It depends both
> on your visitor having an email client already installed
on their
> computer -
> this eliminates public computers, or home users without
email clients
> installed (more and more it seems) - and on the
installed email client
> responding to
> the mailto call. It is not possible to use this method
*and* send the
> visitor to a
> thank you page as well.
>
> Method 2 is the preferred method, since it eliminates
the problems of
> method
> 1, but it means that you have to grapple with
server-scripting somehow
> (ASP,
> CF, PHP, perl, etc.).
>
> You would have to decide which of these methods is best
for your needs,
> but if it's Method 2, then start by asking your host
what they provide for
> form
> processing.
>

ODBC problems with Oracle 8.1.5 on Windows 2000

Hi,
I have got a problem when i configure ODBC on Windows 2000.
When I test the driver with ODBC test driver, the programs doesn't respond when i use Oracle ODBC Driver first but responds when I use Microsoft Driver For Oracle first and then Oracle ODBC Driver.
Then I have a system 5 error when I use ODBC with ASP.
Is it Oracle 8.1.5 which is not compatible with Windows 2000 or a problem in Windows 2000 configuration ?
Best regards
Ronan

I think I was having the same problem; programs attempting to connect w/ODBC (including ODBCTest) would hang. After downloading and installing a newer ODBC driver from oracle (for me 8.1.5.5 worked), I was able to connect. Hope this helps!
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Duclos Ronan ([email protected]):
Hi,
I have got a problem when i configure ODBC on Windows 2000.
When I test the driver with ODBC test driver, the programs doesn't respond when i use Oracle ODBC Driver first but responds when I use Microsoft Driver For Oracle first and then Oracle ODBC Driver.
Then I have a system 5 error when I use ODBC with ASP.
Is it Oracle 8.1.5 which is not compatible with Windows 2000 or a problem in Windows 2000 configuration ?
Best regards
Ronan<HR></BLOCKQUOTE>
null

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