Well I thought I'd given you a pretty good outline of what you need to do. If you are after code example of how to implement a JButton's click behaviour, try this tutorial...

The main method in a java application has the following signature:

public static void main(String[] args)

If you are a beginner I would suggest starting with something a bit simpler than a...

Yep that works too, my example was to show you the method behind the madness :P

Instead of:

you want to call join like so:

// build a char array containing the three characters you tried
char[] chars = new char[3];
chars[0] = 'a';
chars[1] = 'b';
chars[2] = 'c';
//...

You type java Hi, there is no need to specify the ".class" to run your program. Also, you will need a main method in that class to run the program.

In order to run a method that takes an array of integers and returns their sum, your method will need the following signature:

public static int sumArray(int[] anArray)

Then, instead of having...

Yes, that looks good to me. So let's look at what you need to do for your countOneLetter method. The method signature will look like this:

public int countOneLetter(File inputFile, char...

I believe it is possible to set a flag to generate javadoc for private/protected fields and methods. I think its -private or something like that. Google might be able to help you some more on that.

Hi alreem,

We can only help you if you show that you have made some sort of an attempt. Do you have an algorithm or some code that you have tried? We may be able to point you in the right...

I think if you remove the line

traverseInOrder.successor.predecessor = newNode

your algorithm will be correct. Remember, node.successor.predecessor should always equal node unless node is the...

Hi Ballen92 and welcome to DaniWeb :)

What's the error message you get? If I had to guess on the information you've given us, I would say that the method addKeyListener is not defined for your...

Sorry hedwards09, we can only give homework help to those that make an attempt first. Can you post what you have so far with the specific problems you are having? If you haven't started coding yet,...

The line:

Criminal criminal = new Criminal(leftInput.name());

is trying to access the private variable leftInput which doesn't belong to your class. You only have access to the parameter e in...

Hi bhoop and welcome to DaniWeb :)

There are tools out there that allow you to create an exe from a java application. However this defeats one of the main advantages of java, portability. You...

Your error message is telling you what has gone wrong with this line:

if (hours == 16 && minutes == 23)

Here you are trying to compare your variable hours which is a NumberDisplay object with...

Hi intet,

We only give help to those who show some effort. What have you tried so far?

Hi easyb and welcome to DaniWeb :)

You don't need to use Math.pow at all. Math.pow is used to find the power of a number. I wish that banks would pay interest exponentially but unfortunately... ;)...

String number = Float.toString(number);

I think what you are trying to do is convert the number n to a string yes?

What I would do is this:

String number = new Float(n).toString();


Here...

Your line:

while (i<=k)

is placed before k is properly initialised. I think you need a line inserted to receive the input that you are prompting for. That is similar to your line that reads:
...

Hi ankiwalia and welcome to Daniweb :)

Your SQL syntax is incorrect. Instead of this:

String query="select username and password from Registeredusers";

Try this:

String query="select...

Somewhere in your code you are passing a null value when you can't. If I had to guess I would say your problem occurs somewhere near these lines of code:

URL url =...

Can you post the code for your Record class? I suspect the answer might be that you need to override the Equals method, so if you haven't done that I would start there...

In addition to what Ez has said, I would change your forever loop (that is your for(;;) ) to while(cash > 0), that way when the player runs out of cash the game is over.

The GridBagLayout is possibly what you will need. However, it is possibly the most advanced of Java's standard layouts. It gives you full control over margins (Insets) which gives great control over...

I believe that Object one is your observer and objects two three and four would notify it when their data changes.

So Object one is your listener, the other objects are models in the explanation...

readData is not a public variable, so you can't access it by myInput.readData. Try this for your Input class:

class Input{
private String readData;
Input() throws Exception {
readData =...

The easiest way to do this is to extend JPanel and override the paintComponent method. When you override the paintComponent method, you should do the following:

public void paintComponent(...

Hi mveleli and welcome to DaniWeb :)

That's exactly what we're here for. Please post any questions you have and include some of your coding attempts and we will try to help to the best of our...

Sorry what was your question? It seems to have been chopped because of the lack of spaces in it...

>> You can google on Math.ceil() and Math.floor(). Math.ceil(double x) rounds x up to the next largest integer-equivalent number. So Math.ceil(1.5) returns 2.0. Math.floor(double x) rounds x down to...

Yes I have already mentioned that k2k can run their program as an applet. Do you know of any way that a java application (ie not an applet) can be run from an HTML link?

Ah yes, good point. And I'm not trying to argue either, just trying to increase my understanding. Most of my recent programming has been in PHP, so just trying to keep my Java knowledge up to date....

For that to work, your program must extend Applet. Also note that in Applets there is no main method, the Applet's init, start and stop methods are called instead.

There are also java servlet...

Ok I haven't tested this, but here is what I was thinking:

public Number stackSum( Stack<Number> numbers ) {
String className = numbers.peek().getClass().getName();
if( className.equals(...

If that is the case then I think my logic should work. If the method signature was like this:

public Number stackSum(Stack<Number> numbers)

Then I think it should be possible to have one method...

You could have a hyperlink in an HTML page that links to another HTML page that contains a Java Applet. Not sure if that's what you are after though...

So in Java you can't declare that you will return an object of type Number, but actually return an Integer or Double (since they are subclasses)? Is that correct?

I think that if you use Number class instead of T, you can call methods such as doubleValue() and intValue(), then use the + operator and finally return either an Integer or Double. Number is an...

Both the Integer and Double objects extend Number. So you could do the following:

public static Number sum (Stack<Number> stack) {


Note that this method will require you to check if the...

Hi testing321 and welcome to DaniWeb :)

Hint 1: You can make use of certain String functions to work out the characters in the String, such as charAt(). Here...