Glad you got it working. Consider this. To test whether a million is prime, how high do I need to test? Currently you test up to half of one million, but you really only need to test up to the...

Sounds like there is a lot of math involved. If you refer to a theorem, you should link it:

http://en.wikipedia.org/wiki/Separating_axis_theorem

Is this a math problem or a problem with the...

You have two separate problems. Approach them separately and independently:


Get good input from user.
Draw rectangle based on that input.


Part 1 - You must ask the user for input. You...

It's been a while for me, but I imagine NumberFormat might be helpful, as well as printf from the Console class.


http://java.sun.com/docs/books/tutorial/i18n/format/numberintro.html...

You have no System.out.println statements in either the functions themselves or the calling statements. You create the String you want to display to the screen, but never display the String. Since...

This is a perfect candidate for a 4 x 4 GridLayout.

http://java.sun.com/docs/books/tutorial/uiswing/layout/grid.html
http://java.sun.com/javase/6/docs/api/java/awt/GridLayout.html

private static int ageCalc(int mm, int dd, int yyyy){
// code
birthDate.set(yyyy, mm, dd);



I'd have to see the function call, but if you are doing this:


ageCalc (9, 3, 1991)

I can't imagine that these two lines in red are doing anything good:


void display(String string) {
phrase = string;
pan.display(phrase);
add(pan);
repaint();
}

Comment 1 - Have a README. You have batch file to run the program, but no README to tell you to run the batch file and to say what is inside the batch file. People have (hopefully by now) been...

It's no longer just a sorting issue, it's a storage/access issue which must be solved before the sorting issue is touched. Put this program aside and start a much smaller program. The one you have...

Yes, definitely read the stickies regarding code tags and the rest of the rules. I explained code tags on two of your previous threads. Here, for the final time, is how to use them.



// Paste...

http://java.sun.com/docs/codeconv/html/CodeConventions.doc8.html

StringConcatenate1 is not a good name for the object. stringConcatenate1 would be better. See the link on conventions. Whether...

You aren't getting help because you aren't showing effort yet. It's the policy on this forum (and just about all forums) that posters must show something in their post to show that they have...

Typo in line 24?


public void painComponent(Graphics g)

I've never written an application installer, so I have no clue what that involves. How about, instead of a game, write a physics tutorial that shows balls colliding when you have certain balls of...

I don't see any mistake either. This compiled and ran perfectly for me.

You need an instance of WinLsnrExp to use the a variable. You don't have one when you are trying to use a in main. a is not a static variable. main is a static function. Google "java static...

Use the ! operator.


boolean a = true;
System.out.println (Boolean.toString(a)); // true
a = !a;
System.out.println (Boolean.toString(a)); // false

You said you had already selected the method and that it was Dijkstra's Method. Also, how can you not consider all the nodes? If you have 1000 nodes and you only look at 999 of them, how do you...

JButton j[] = new JButton[s.length];

for(int i=0;i<s.length;i++)
j[i].setText(s[i]);


Line 1 creates the ARRAY of JButtons. It does not create any new JButton objects,...

Best guess, and it's only a guess, is that in the DungeonMaze.setTraps function, you are "rerolling" because you have some collision (i.e. a trap is picked randomly to be at the same spot as another...

???????

You had it fine before. It is randomly assigning things and it's not all false or all true. If you fix printBoard, you should be OK. You may or may not have problems going from one...

Break it up into two pieces (horizontal distance and vertical distance). To calculate vertical distance, there are three possibilities:

1. Rectangle 1 and rectangle 2 overlap vertically (i.e. top...

I could have missed it, but I don't see anything like this in your path above (path, not classpath):



In Windows XP, go into Control Panel -> System -> Advanced -> Environment Variables ->...

For the first problem, if the MySurvey class (I don't know what MySurveyPanel class is) is the way I suggested, as below:


import javax.swing.*;
import java.awt.event.*;
import java.awt.*;...

First, let's look at your MySurvey class:


public class MySurvey extends JFrame
{
private JPanel CenterPanel = new JPanel();
private JPanel QuestionPanel = new JPanel();
private JPanel...

public void paintComponent( Graphics g)
{
super.paintComponent (g);

for ( int count = 0; count < rectangle.length; count++)
{
//This is the area where i need help
...

Are you talking about the code itself or the clue that a poster is going to be a nightmare to help? In either case, aside from what you mention, a lack of commenting is a good clue. I'm glad you...

Finding the roots of a cubic equation isn't trivial. See this wikipedia link and scroll down for a discussion and links to finding roots.

http://en.wikipedia.org/wiki/Cubic_equation

I...

Thank you for using code tags! Please point out the line that is giving you the error (you can highlight it in red or just tell us what line to look for).

Well, you have way too may balls going way too fast to do any real checking, so I changed your Input class to ignore the file and set up two balls:


public class Input {

public static void...

I like verruckt24's idea. You have an image and certain parts of that image represent different "sections" (i.e. $10 bet section, $50 bet section, etc.). You need to have a mapping from the (x,y)...

I don't know what line 66 is, but it looks like it may be different from what h3xc0de's line 66 was? You may want to repost your updated code and highlight the line that gave you the error.

I...

The second parameter is the ending index of the substring (exclusive), not the number of characters in the substring.

If you want single character substrings, you can do this:


number1 =...

I want a new car. With any luck, Santa Claus will help us both out. If you want help BEFORE Christmas, though, you are going to have to be more specific and show some effort.

I try not to be a brick wall, but sometimes I fail :) I am most brick-wallish when I try to make Java behave like C++ and pass by reference. At least this time I'm not because the advice makes sense...

Mark your other thread solved please.


ArrayList<ArrayList<String>> matrix = new ArrayList<ArrayList<String>>();



matrix.get(i).add(line);

Try Java SE. Download JDK 6 Update 10 with NetBeans 6.1
http://java.sun.com/javase/downloads/index.jsp

The IDE is just personal preference. It's all free. You need to have a JDK installed. ...

t = new MyForm ();




Oh, I see, that line is inside your MyForm () constructor, so it's an infinite recursive call to your constructor. Every new object makes a new object so there is no...

Create five variables, all integers. Have a variable called year that stores 1998. Have four more variables: thousands, hundreds, tens, ones. If year = 1998, use the / and % operators to put the...