Regex Java Question.

I'm trying to create a regex that will not match something. What I mean is if I have the string "this" I want everything but "this" to match the regex.
"not this" == Match
"something" == Match
"this blah" == Match
"this" == Not a Match
"hist" == Match.
I have come up with: ".*[^(this)].*" but, it doesn't work for "hist".
Any Ideas?
-- Steve

Note that that regex will also match an empty string. If you want to require at least one character, add a bit: Pattern.compile("^(?!this$).+");Or, to require at least one non-whitespace character: Pattern.compile("^(?!this$)\\S.*");

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Java Question... please help

I am running Snow Leopard (mac os x version 10.6.8)
For the past couple of years I've played gin in yahoo games.
Yesterday when I entered the gin lobby ...the font was so tiny
I wasn't able to read it.   I checked Java on my computer and
it is enabled, however I just realized when I go into the gin
lobby... there is no java icon on the dock.   Since the font size
is fine in all other applications, I am presuming this is a Java
issue.
Help if you are able.. please and thanks

Huh? Is this a Java question? Where's the Java? I just see a little JavaScript. Do you know how to use servlets and JSPs?
Jesper

What kind of Java questions can I ask?

Here's a change:
I want to interview some good java people. I have lots of Java questions in mind which I could ask them, however fellow JavaGuru's
I would like some potential questions from you which I could ask someone who claims he/she is a good java programmer??
I am asking because I want to be as fair as possible to the applicant and not ask them questions which I think are tough etc...

Touchy subject.
The language is not as important, as understanding programming concepts.
So fine, when the programmer's horizont involves some abstraction levels.
If a programmer can write an UML class diagram for a linked list.
If a programmer knows a design pattern Singleton.
If a programmer can write his/her own single linked list class with sorted insertion.
Language concepts:
- Why:
import java.util.*;
Map map = new HashMap();
- Answer:
Hiding the choice of implementation (HashMap) by using the more general
interface Map.
Don't expect much on an interview though. The situation might not be
adequate to distinghuish between the good and the bad apples.
Talking code is a good starting point, code of your making unfortunately.
A good programmer will hesitate to show really useful code.
A bad programmer might have stolen his/her code.
The problem you might have, that you are in search of an expert, not
having the expertise in-house. In that case you might get a better
picture, talking about which IDE would be opportune, whether he/she
has experience with the source version system CVS, what would his/her
ideas be about coming projects.
That would establish a common line of communication.

Interesting Java Questions. Need answers Pls

Hi All,
I have come accross few java question, could any one please provide best answers please?
1. Why the wait() method is there in the Object class? Not in the Threads?
2. Why JDBC has all interfaces & not classes?
3. Which type of collection do u prefer to make the incoming objects in sort order?
4. Why the hasCode() method should be implemented if we are overiding the equals(0 method?
Please provide me best answers ASAP.
Girish.K

do u prefer tohttp://www.catb.org/~esr/faqs/smart-questions.html#writewell
How To Ask Questions The Smart Way
Eric Steven Raymond
Rick Moen
Write in clear, grammatical, correctly-spelled language
We've found by experience that people who are careless and sloppy writers are usually also careless and sloppy at thinking and coding (often enough to bet on, anyway). Answering questions for careless and sloppy thinkers is not rewarding; we'd rather spend our time elsewhere.
So expressing your question clearly and well is important. If you can't be bothered to do that, we can't be bothered to pay attention. Spend the extra effort to polish your language. It doesn't have to be stiff or formal - in fact, hacker culture values informal, slangy and humorous language used with precision. But it has to be precise; there has to be some indication that you're thinking and paying attention.
Spell, punctuate, and capitalize correctly. Don't confuse "its" with "it's", "loose" with "lose", or "discrete" with "discreet". Don't TYPE IN ALL CAPS; this is read as shouting and considered rude. (All-smalls is only slightly less annoying, as it's difficult to read. Alan Cox can get away with it, but you can't.)
More generally, if you write like a semi-literate b o o b you will very likely be ignored. So don't use instant-messaging shortcuts. Spelling "you" as "u" makes you look like a semi-literate b o o b to save two entire keystrokes.

Regex pattern question

Hi,
I'm trying to get my feet wet wtih java and regular expressions, done a lof of it in perl, but need some help with java.
I have an xml file (also working through the sax tutorial, but this question is related to regex)that has multiple elements, each element has a title tag:
<element lev1>10<title>element title</title>
<element lev2>20<title>another element title</title>
</element lev2>
</element lev1>If I have the following pattern:
Pattern Title = Pattern.compile("(?i)<title>([^<]*)</title>");that picks up the titles, but I can't distinguish which title belongs to which element. Basically what I want to have is:
Pattern coreTitle = Pattern.compile("(?i)<element lev1>(**any thing that isn't an </title> tag**)</title>");looked through the tutorials, will keep looking, I'm sure it's in there somewhere, but if someone could point me in the right direction, that would be great.
thanks,
bp

Just guessing, but maybe...
Pattern.compile("(?i)<element lev1>*<title>([^<]*)</title>");
But it seems that things like parsing with SAX (or loading to a DOM) or XPath would be much better suited to parsing out XML then regexp.

Simple basic java question

public static void main(String[] args)
..anyone know the statement as above could be start at begining , so what is the (String[ ] args) mean in java ?
in my ideas of this statement is
publc : indicates the statemean can be used as all class , this is open for public use
static mean the main method can used as class method
void indicate that the statement return nothing
main indicate any class should be run this first.
so my question what is the function of (String [ ] args) ? // one string array call args ?

String[] args is indeed an array of Strings called args. The reason it's there is to collect any arguments passed to your code when you start it.
eg. if you have a class called TestClass and you called it from the command line like this:
java TestClass exam tomorrow oh shite
.......then the args array would hold the four Strings:
exam
tomorrow
oh
shite

Forte for Java question

By using the JDBC form wizard, I generated a swing program. Along with the java code, there is a form file which looks like an xml file. My question is how to complie and run the java source code without a forte4j IDE?
Thanks

One thing is you need the jdbc in your classpath or specify at runtime. Search compiler in the forte help menu - to see options.
execution : <specify at runtime>
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compile : javac Progam.java or javac -classpath .;postgresql.org Progam.java
Ray

TextSamplerDemo.java question

I took the TextSamplerDemo from http://java.sun.com/docs/books/tutorial/uiswing/components/text.html and stripped it down to the one thing I have a question about. Given the code below, how do I implement the toolbar button to make selected text turn bold? I've been beating my head againt this one for a couple of days now and getting nowhere.
Any help would be deeply appeciated.
--gary
import javax.swing.*;
import javax.swing.text.*;
import java.awt.*; //for layout managers and more
import java.awt.event.*; //for action events
public class TextSamplerDemo extends JPanel
implements ActionListener {
private String newline = "\n";
protected static final String textFieldString = "JTextField";
public TextSamplerDemo() {
setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
JToolBar toolBar = buildToolbar();
add(toolBar);
//Create a text pane.
JTextPane textPane = createTextPane();
JScrollPane paneScrollPane = new JScrollPane(textPane);
paneScrollPane.setVerticalScrollBarPolicy(
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
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paneScrollPane.setMinimumSize(new Dimension(10, 10));
add(textPane);
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private JTextPane createTextPane() {
String[] initString =
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newline + "JTextPane is a subclass of JEditorPane that " + newline +
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String[] initStyles =
{ "regular", "italic", "bold", "small", "large",
"regular", "regular"
JTextPane textPane = new JTextPane();
StyledDocument doc = textPane.getStyledDocument();
addStylesToDocument(doc);
try {
for (int i=0; i < initString.length; i++) {
doc.insertString(doc.getLength(), initString,
doc.getStyle(initStyles[i]));
} catch (BadLocationException ble) {
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return textPane;
protected void addStylesToDocument(StyledDocument doc) {
//Initialize some styles.
Style def = StyleContext.getDefaultStyleContext().
getStyle(StyleContext.DEFAULT_STYLE);
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Style s = doc.addStyle("italic", regular);
StyleConstants.setItalic(s, true);
s = doc.addStyle("bold", regular);
StyleConstants.setBold(s, true);
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s = doc.addStyle("large", regular);
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JToolBar toolBar = new JToolBar();
toolBar.setRollover( true );
toolBar.setFloatable( false );
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boldButton.addActionListener( new ActionListener() {
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* Create the GUI and show it. For thread safety,
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private static void createAndShowGUI() {
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
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JComponent newContentPane = new TextSamplerDemo();
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public static void main(String[] args) {
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javax.swing.SwingUtilities.invokeLater(new Runnable() {
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try this, but im'not sure.
StyleContext styleContext = StyleContext.getDefaultStyleContext();
Style def = styleContext.getStyle(StyleContext.DEFAULT_STYLE);
Style bold = styledDocument.addStyle("bold", def);
StyleConstants.setBold(bold, true);into the listener of your component insert this:
int start = getSelectionStart();
int len = getSelectionEnd() - start;
styledDocument.setCharacterAttributes(start, len, bold, true);by gino

Beginner Java questions

Hello:
I'm looking for some guidance on a few things I am confused on. Can somebody tell me or point me in the right direction on how you would write and equivalent compound statement for
x = 2 * x;
sum = sum + num;
y = y / (x +5);
lastly
What type of input would I use for :
import java.util.*;
public class Strange
static Scanner console = new Scanner (System.in);
public static void main (String[ ] arg)
int x;
int y;
String name:
x = console.nextInt ();
name = console.nextLine ();
y = console.nextInt ();
I appreciate any guidance and help provided on this. I'm struggling to wrap my head around some of these things.

eaolson wrote:
BigDaddyLoveHandles wrote:
This is obviously a homework question. Please don't expect anyone here to do your homework for you.Well, if you notice, he's asking for "guidance" and for people to "point him in the right direction". He's not stating a problem and demanding a solution like so many others. If you ask me, he's asking for help with homework in exactly the right way.
For the first question, I would suggest reviewing this section and the following ones of the Java Tutorials:
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/operators.html
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/op1.html
I don't understand what the second question is asking for.In reply #2 the OP tried to clarify the second question:
Well, I'm tasked wtith stating "what type of input the progragms requires and in what order the input must be provided" for the program I stated. >Beyond that, I'm not sure either and that's why I'm looking for help. "Looking for help", eh?

EDID and LUT - a java question

Hi all!
I just got my Mac Mini two days ago. I need some help in accessing certain informations to a java app I'm ought to write. I tried to google 'em up, but I got stuck. Maybe someone here could help me?
1. How can I get EDID from my display? I've seen there's something called read-edid under linux, but I don't really know how close a relative Tiger is to linux/BSD.
2. How can I write to LUT on my Mac?
I suppose there are some libraries, that I can use, but I can't find them
If not, maybe someone could direct me to a C library, so I can hopefuly run it via JNI.
Any help would be greatly appreciated.
TIA,
Pablo

blue-rose wrote:
i don't see someone who want to help me =/ ,, if u don't want to ,, it's up to you ,, but there is no need for these words which u said to me ,, it really hurts ,, thanks all anyway =( ,,Seriously though, we help those that show that they are willing and able to do some work first. All you've posted was a classic "homework dump", and these are the typical responses to homework dump questions. Lesson learned.

2 quick java questions

hi, im working on a large grpahics project with some people, and i had a couple of simple questions.
1) is it possible to detect the colour of a spefic pixel on an image?
Maybe some sort of method that returns the color or something? This woudl be for collision detection, since we're going to have a character walking around a building and this is pretty much the only thing i can think of for collision.
2) Is it possible to load a large image, and then make the screen only show a small portion of it? and then when you move, it kind of resets the focus on the larger image to your new location? This would be used to help the character move around the large map.
Thanks for all the help!

Youre going to want to get VERY acquainted with Image and BufferedImage, lol.
Note the getRGB method.
As for resizing, there are many ways to do this ranging from very simple
to a bit complicated.
int getRGB(int x, int y)
Returns an integer pixel in the default RGB color model (TYPE_INT_ARGB) and default sRGB colorspace.
http://java.sun.com/j2se/1.4.2/docs/api/java/awt/image/BufferedImage.html
http://java.sun.com/j2se/1.4.2/docs/api/java/awt/Image.html

4 basic java questions..

ok so I already learned Java last year (in grade 11), but my teacher didn't really teach anything, we learnt everything by ourselves from the API... so theres a lot of things I actually don't understand, but for now I want to ask 4 basic questions:
1. What does static mean?
2. Why would u "final" a constant variable? ie. If you have a variable called SIZE which is set to 5, so if u want it to be a constant, just never change its value. But what does the keyword final do to it?
3. What's super? I see it sometimes, and my teacher showed us in the applet exampls to use super.paint(g) or somethign like that for the paint method, but I never use that because I noticed it works fine without it..
4. Whats a question mark? I saw a game that was made in java and it had a lot of places where it had a question mark , which was part of the syntax. For example,
int j1 = i != 0 ? i - 1 : 199;
OR
JUMPVEL = (fSuperSlime) ? 65 : 31;
I really don't understand these lines...
feel free to answer any of these questions...

wow cool...thanks.. that question mark thing is nice
saves a few lines..
now, about super, so u mean u can access the parent
class's variables?Variables, methods, constructors, if the access level is such that it's allowed.
This will be covered in any tutorial or text though.
Sun's basic Java tutorial
Sun's New To Java Center. Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
http://javaalmanac.com. A couple dozen code examples that supplement The Java Developers Almanac.
jGuru. A general Java resource site. Includes FAQs, forums, courses, more.
JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns." FAQs, forums (moderated, I believe), sample code, all kinds of goodies for newbies. From what I've heard, they live up to the "friendly" claim.
Bruce Eckel's Thinking in Java (Available online.)
Joshua Bloch's Effective Java
Bert Bates and Kathy Sierra's Head First Java.
James Gosling's The Java Programming Language. Gosling is
the creator of Java. It doesn't get much more authoratative than this.

Jli.dll: why it's is not a Java question?

jli.dll came with the downloaded program. Why lock my question?

probably because this is not a scite forum. certainly I had no idea what is was when I read your post.
-- and becuase this post doesn't say that the downloaded program is actually the JDK (or is it??) - if you make us guess what you could have actually told us - we are less likely to feel inclined to help you - don't assume we can read your mind.
however I have done a few moments research and it looks like it might be vaguely java related (but not java compiler related).
My windows install of java indeed does contain a jli.dll so if your's does not, it might be stuffed, and if the msi is corrupt, that might be why it didn't get installed.
I would try to download a new copy and reinstall the JDK and see what what happens. If there are problems (basic JDK problems - not skite problems) then post to the [ new to java|http://forums.sun.com/forum.jspa?forumID=54] forum for assistance. for skite problems go ask skite site.

Urlencoder : java question...

Hi,
I have a question on url encoding...
I have to open a file from the remote location and
I have file with the name something like this...: "{0EC79CFA-9AD5-4120-A768-BD3FBFA9BF6A}_2003_0816Image0006.JPG"
I want to open this file after encoding the file name using urlencoder.
Please suggest me how to do this. Please give me a sample code to for this...

You are being way too vague. I cannot tell if the file is to be opened in a browser or on a server. And you still have not explained what this has to do with JSF. It is is not a JSF-specific question, take it to the general Java forum. [But not before reading this over|http://www.catb.org/~esr/faqs/smart-questions.html] .

A Java Question

{color:red}"using eclipse "{color}
Given the structure in [ |http://www.eng.kuniv.edu/ocs/file.php/622/Interface.JPG]for
the Interface and the classes, write a java program that implements the
given structure. Add a driver, create atleast one object of each class
and use the Interface to reference them. Print all related information
for each object by calling methods GetInfo() and GetValue().
{color:red}Method Description:{color}
{color:red}GetInfo(){color}: Will print all related data members for any class.
{color:red}GetValue(){color}:
<ol><li><div align="left"> for Invoice: It will print the value=Quantity * Price
</div>
</li>
<li><div align="left"> for Vehicle: It will print the value=OriginalPrice - (0.05 * OriginalPrice * UsedYears)
</div>
</li>
</ol>
*{color:red}Constructors(){color}: Must set all related data members.*
Figure:
http://image.cramster.com/answer-board/image/20095301057386337927785826562507648.jpg
**Output Sample:*
Object 1
Type: Invoice
Quantity: 10
Price: 550
Calculated Value: 5500
Object 2
Type: Benz
Production Year: 2005
Used Years: 4
Original Price: 12500
Calculated Value: 10000
Edited by: blue-rose on Jun 2, 2009 11:44 AM

blue-rose wrote:
i don't see someone who want to help me =/ ,, if u don't want to ,, it's up to you ,, but there is no need for these words which u said to me ,, it really hurts ,, thanks all anyway =( ,,Seriously though, we help those that show that they are willing and able to do some work first. All you've posted was a classic "homework dump", and these are the typical responses to homework dump questions. Lesson learned.

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