For some reason this method prints out an extra integer at the bottom. For example: It is supposed to only print out 4 x4.

20 20 20 20
20 20 20 20
20 20 20 20
20 20 20 20
20

Any idea...

Thanks everyone. Just needed a little psuedocode to gain some understanding.

I have read it many times, if I understand all I would not be asking for assistance. If you cannot provide assitance without being rude, I would rather you not respond at all.

I understand how to get elements from an array. I am working on the display. How to display elements of an array at certain positions. If charA and charB are matches then display the positions of...

Hi all,

I wondering how to get started with this. I am working on a method that will take two ints. These ints represent positions in an arraylist of characters. I am trying to determine if...

hmm, I have never heard of an array of Character. Would you provide an example?

Here is a snippet of code:



Array<Character> letters = new ArrayList<Character>();
char[] characters = new char[row * col];
...

public void createShuffleLetters()
{

Hi All,


Is it possible to convert an arraylist of chars to an array? For example:

ArrayList<Character> array = new ArrayList<Character>();

Can this be converted to an array of chars. I...

This is great, but how would I go about preventing duplicates when the array is randomized?

This was was not working for me.

Here is what I have so far. In stead of printing it out in one row how can i get it to print in both rows and colomns. For example:

A B C D
E F G H
I J K...

Hi,

This is a very simple question. Is it possible to print a one dimensional array into the shape of a grid?

For example if I have the follow array:

chars arrayofChars[] = {'A', 'B', 'C',...

Yes, I think I got it. Thanks

Hello,

I am working on a plain old simple text version of a memory game.
The player will be able to match letters of the alphabet by clicking on various numbers. For example

This is what the...

Hi all,

I have a quick question. Is this a proper way of using blackbox testing to test the stringTokenizer class? If not, would you provide a proper example that displays the pass or fail.

...

Hi,

I really hope that someone can give me a little advice. I am working on a program that reads a text file formatted as follows:

Bike, Schwinn, 45.00
Car, Mercedes, 98,000
...

I am...

I really hope that someone can provide some suggestions or help to guide me in the right direction.
I am trying to use a scanner to parse a string and use its elements with methods. It is...

Hello,

I have a text file that is formatted as such:
Volkswagen, 547, 9.78, 2
Mercedes, 985, 45.77, 35
...

I am trying to figure out how use the Scanner to read from the text file and store...

Thanks all, it works fine, but I am curious as to why eclipse gives the error but not JGrasp.

There must be some sort of error in Eclipse, because it is the only one that gives this error. However, I moved over to JGrasp and it works fine with your solution.

Is there any way to add a 0...

Thanks, I tried that but still get the same error. Any other suggestions?

Hello all,

I am trying to display time in the following format that represents hours and minutes:
hh:mm


public String getTime()
{
String time = String.format("%tI:%tM",...

Hello All,

I really hope that you can help me. I am working on a program that will read a randomaccess file's contents and store the contents into an array. It will then update the array and...

Hi,

I am working on a sort of stack calculator. If anyone can suggest a better method please advice:

Basically, using the stringtokenizer to break the string into tokens. If the token does...

This is the line the received the exception:

hash2.put(info,((Item)hash.get(info)).getDescrip());

Well, "info" is infact a substring from a string entered by the user and getDescrip() returns a...

Thanks Ezzaral,
It worked exactly as you described however I am now receiving the following error that I am trying to figure out:

Exception in thread "main" java.lang.ClassCastException:...

I have tried the following:


if(test.containsKey("mouse"))
{
test2.put("mouse", (test.getDescrip()));

}

No prob JavaAddict,

I started a new thread because the old one started to get a bit confusing and unorganized. I was starting to confuse myself with all of the changes that I was making...

Thanks for your help Ezzaral.

Hello All,

How can I get the information that corresponds with the containsKey to be put into the hashtable.

I am checking to see if a hashtable contains a key. If it does how can I put...

Just at a glance there are numerous issues. You need to fix the obvious things then resubmit your code within code tags to allow for ease of reading.

All are type Objects with the exception of "info", which is a String read from user input. Of course hash and hash2 represents the hash tables.

Well, I have made some progress. But it still will not "remove" the item from the hashtable.

this is how I used the put method:

hash2.put(hash.get(info), hash.getDescrip());

However when...

The problem has to be with how I am using the put method. When I test the put method with simple strings it works fine.

How is this? I still have the same problem. It will not go into the hashtable.


for(int i = 0; i < 7; i++)
{
if(hash.containsKey(info))
...

Hello All,

I really hope that someone can provide some assistance.

I have read a XML file into my hashtable. Next I created a second hashtable. If a key is located in my first hashtable, I...

Does any one know of any good websites that explain hash tables in great detail?

Thanks

Hello All,

I am using a stringtokenizer to divide a string while comparing each word in the string to a specific word and pushing it onto a stack. I can push it onto the stack with no problems;...

H..

Thanks

Thanks for the reply. Are there any real differences between Eclipse and NetBeans?