Help in Button in Java

so,
I have a two-dimensional array of Button, each one is located in a different location on the graphic screen.
some of the raws are initialized, but some are "null".
i hava a different one Button and i want to check whether the Button is located at the location of one of the array's cells - and this particular cell is "null" - so to initialize this cell with the data of the other Button, and then this button become to be "null" or setVisible(false)
my problem is that i couldn't succeed to write the exact code that can fill this condition, because i couldn't think how to check whether this cell is the cell we're talking, or the one to the left, or the one to the right - because they're all close to each other, and i need to check if some cell is more (!!!) contains the one-Button than the others.
i would like to get some help!
please....
thank you!!! :)

Note: This thread was originally posted in the [Java Programming|http://forums.sun.com/forum.jspa?forumID=31] forum, but moved to this forum for closer topic alignment.

Similar Messages

  • Transparent Buttons in Java Swing?

    Hi!
    I want to create transparent Buttons using java swing for my desktop application. Can any one tell me how to do it?

    I can help, but it depends on what you mean by "transparent".
    Do you mean TOTALLY transparent, or slightly transparent, or merely translucent? Do you want the text on the button to be in any way transparent? You really need to be more specific.
    Basically, though, the concept is pretty simple. All swing components have several methods that can be overridden by somebody who knows what they are doing, in order to customize their appearances.
    Some of these are: paint(), paintComponent(), ComponentUI.paint(), etc.
    You need to determine the right place to put the new code. Then you extend the class, and change the transparency of the graphics object passed into the method in question, and then pass control to the super implementation of that method.
    There are some traps you need to make sure you avoid, though:
    1. If you want transparent components, you MUST have the opaque property of the component set to false. Otherwise, the components beneath your transparent button will never update.
    2. When you start messing with a graphics object to create transparency, you need to make sure that you revert your changes to the graphics object when you are finished, because all painting uses the same graphics object -> so if you set your button transparent, and then forget to remove the transparency, all objects drawn after the button will also be drawn transparent.
    A word of caution:
    This sort of manipulation is not hard, but you NEED to understand the painting model for SWING. There are a few articles hosted by sun that can help you in this respect.
    Good Luck!
    - Adam

  • Is it possible to create round shape button in java

    i have following questions, if possible plz. help me.
    1) is it possible to create round shape i.e circular shapes button using java program.
    2) is it possible to access the floppy and format it using java program. (if it is not possible to format it then plz. tell me how to access the floppy using java program).
    if possible plz. send me code of that programs on following address..
    [email protected]
    waiting for reply.
    prasad.
    (faculty of ssi)

    i have following questions, if possible plz. help me.
    1) is it possible to create round shape i.e circular
    shapes button using java program.
    Yes - GUI Components paint themselves through the invocation of their paint(Graphics) method. Create a subclass of JButton and override the method to paint a circle.
    public void paint(Graphics g) {
      //work out where you want to put the circle, x_pos, y_pos etc
      g.drawArc(x_pos, y_pos, width, height, 0, 360);
    }or some such. Note that since Java 1.2, the object that gets passed in to this method is actually a Graphics2D Object (subclass of Graphics). This provides extra methods.

  • How i will see print Preview of an excel by clicking a button in java

    hi,
    I have created an excel file from java. Now i want to see the print preview of this file by clicking a button in java? Is it possible in java? I have used JExcelApi for this. Is there anybody can help me?
    This is my code:
    package image_handle;
        import jxl.Workbook;
        import jxl.write.*;
        import java.io.*;
        import javax.print.*;
        import javax.print.attribute.*;
    import javax.print.attribute.standard.*;
        public class Excel {
          public Excel(String name) {
           try{
            Workbook wb= Workbook.getWorkbook(new File("report.xls"));
           WritableWorkbook copy=Workbook.createWorkbook(new File("Workbook.xls"),wb);
          WritableSheet sheet = copy.getSheet(0);
          Label label = new Label(0,1,"Bina");
          sheet.addCell(label);
          Label label1 = new Label(1,1,"187");
          sheet.addCell(label1);
          WritableImage image = new WritableImage(2,3,2,4,new File(name));
          sheet.addImage(image);
          copy.write();
          sheet.p
           copy.close();
          catch(Exception ex){
            ex.printStackTrace();
    }I need solution urgently. PLease help me.
    With regards
    Bina

    Multi-Post
    http://forum.java.sun.com/thread.jspa?threadID=731384&tstart=-1

  • Help w/ making a Java Pass

    Hey,
    I need some help in making a Java password applet.More specifically, when a button is clicked (e.getsource) getting the text from one text box, (the passwordbox) and printing a statement in another, or on the applet itself, and then taking them to the designated page. If you can understand this, and can help, PLEASE email me at [email protected] I know there is a way to do it in JavaScript, but I'd like to use an applet.
    Thanks!!
    Hoss

    People here don't typically offer a code writing service. That's not intended to be rude or dismissive - it's just the way things are. For all I know you have may have code written and are facing some problem or other. But if you don't post that code and describe that problem, then it can come across as looking for someone else to write your code: something that will generate a warm, but unproductive, response.
    Or maybe you simply have no idea where to start. In that case have a look at the [Graphical User Interfaces|http://java.sun.com/docs/books/tutorial/ui/index.html] section of Sun's Tutorial. The tutorial itself is quite comprehensive so if there are things there concerning basic Java syntax they are very likely explained in earlier sections.

  • How doest jdk docs help as in writing java code?

    hi i wonder how does jdk docs help as in writing java code because if i google a java code the jdk docs always becomes the result of my search but in my experience jdk docs never helps me.
    is there any one know how to use jdk docs? and how to get the code from there.
    im telling about jdk docs from here http://download.oracle.com/javase/1.4.2/docs/api/
    cross posted from http://www.thenewboston.com/forum/viewtopic.php?f=119&t=13778
    Edited by: 871484 on Jul 18, 2011 4:18 PM

    871484 wrote:
    ok can any one give me example how to use jdk docs? for example this code
    Your question still does not make any sense, and you still haven't clarified what you're not understanding.
    However, if you think that just by reading the API docs, with no other training or study, that you will be able to write that code, then you are seriously misunderstanding the purpose of the docs.
    Obviously English is not your native language. You grew up speaking some other language at home and with your friends, and at some point in school or as private study, you started to learn English. You learned about the grammar and the alphabet and pronunciation, sentence structure, word order, etc. Now you have the basics of how the language works, and you know some words. When you want to learn new words to fit into the structure you have learned, you use a dictionary.
    If you didn't study the grammar, sentence structure, etc., and just said, "I want to learn English. I will look at a dicationary," clearly that would not work.
    Right?
    So, since you now understand and agree with the English example, let me state something that I hope is obvious to you by now: The API docs are your dictionary. They are not a substitute for learning the language basics.
    Furthermore, once you know the language basics in English and have your dictionary, you still won't know how to write a resume (which you may know as a CV). You will look at examples and perhaps take a course on resume (CV) writing. Just reading a dictionary won't help you write a resume(CV). Similarly, if you know some Java basics, you can't learn how to write a Swing app just by reading the Javadocs. You'll look at tutorials and examples. Then, once you know the basic structure of a Swing app, you'll look to the javadocs for more details about more kinds of GUI classes--different buttons and windows and panes and panels and layout managers, etc.

  • How to call elem. Search help on Button click event in WD appilcation

    Hello All,
    i have requirement to call elem. search help on button click event in WD application. currently i am calling FM  F4IF_START_VALUE_REQUEST but getting the short dump as below,
    The following error text was processed in the system X31 : Screen output without connection to user.
    The error occurred on the application server saps_X31_31 and in the work process 0 .
    The termination type was: RABAX_STATE
    The ABAP call stack was:
    SYSTEM-EXIT of program SAPLSDH4
    Function: F4_PRESEL_WITH_TABSTRIP of program SAPLSDH4
    Form: F4PROZ_STEP_PRESEL of program SAPLSDSD
    Function: DD_SHLP_SINGLE_STEP of program SAPLSDSD
    Form: F4PROZ_LOOP of program SAPLSDSD
    Form: F4PROZ of program SAPLSDSD
    Function: F4IF_START_VALUE_REQUEST of program SAPLSDHI
    Method: ONACTIONSEARCH_CUSTOMER of program /1BCWDY/50TU5ZEXF3K0IWCWE153==CP
    Method: IF_WDR_VIEW_DELEGATE~WD_INVOKE_EVENT_HANDLER of program /1BCWDY/50TU5ZEXF3K0IWCWE153==CP
    Method: INVOKE_EVENTHANDLER of program CL_WDR_DELEGATING_VIEW========CP
    is there any way to achieve the required behaviour.
    please let me know.
    Regards,
    Chandra

    Hi Friends,
    I have the similar kind of requirement. Upon click on a Button on screen i need to call a search help, and collect one or more selected material numbers.
    The search help is working fine and i am getting the entries with the following code.
    The problem is i am finding extra popup on screen.
    CALL FUNCTION 'F4IF_FIELD_VALUE_REQUEST'
    EXPORTING
    tabname         =  space
    fieldname       =  space
    SEARCHHELP      =  'MAT1'
    MULTIPLE_CHOICE =  'X'
    STEPL           =  0
    value           = 'MATNR'
    *dynpprog        =  progname
    *dynpnr          =  dynnum
    *dynprofield     = 'CARRIER'
    CALLBACK_PROGRAM          = 'ZTEST_1_PRA'
    CALLBACK_FORM             = 'F4CALLBACK'
    TABLES
    RETURN_TAB                = RETURN_TAB
    EXCEPTIONS
    FIELD_NOT_FOUND           = 1
    NO_HELP_FOR_FIELD         = 2
    INCONSISTENT_HELP         = 3
    NO_VALUES_FOUND           = 4
    OTHERS                    = 5.

  • Need help in my assignment, Java programing?

    Need help in my assignment, Java programing?
    It is said that there is only one natural number n such that n-1 is a square and
    n + 1 is a cube, that is, n - 1 = x2 and n + 1 = y3 for some natural numbers x and y. Please implement a program in Java.
    plz help!!
    and this is my code
    but I don't no how to finsh it with the right condition!
    plz heelp!!
    and I don't know if it right or wrong!
    PLZ help me!!
    import javax.swing.JOptionPane;
    public class eiman {
    public static void main( String [] args){
    String a,b;
    double n,x,y,z;
    boolean q= true;
    boolean w= false;
    a=JOptionPane.showInputDialog("Please enter a number for n");
    n=Double.parseDouble(a);
    System.out.println(n);
    x=Math.sqrt(n-1);
    y=Math.cbrt(n+1);
    }

    OK I'll bite.
    I assume that this is some kind of assignment.
    What is the program supposed to do?
    1. Figure out the value of N
    2. Given an N determine if it is the correct value
    I would expect #1, but then again this seem to be a strange programming assignment to me.
    // additions followI see by the simulpostings that it is indeed #1.
    So I will give the tried and true advice at the risk of copyright infringement.
    get out a paper and pencil and think about how you would figure this out by hand.
    The structure of a program will emerge from the mists.
    Now that I think about it that advice must be in public domain by now.
    Edited by: johndjr on Oct 14, 2008 3:31 PM
    added additional info

  • Help with buttons :S

    hi all,
    i'm new to flash but i have an idea whats going on with webpages. I need some help with buttons! i have a website and its has a stage and 9 different flv's (screens). I've been trying to read online and i can't find out how to navigate to different screens, example below
    home          |            |
    about us     |  stage   |
    contact       |            |
    you click one one button it updates the stage. also i'm using actionscript 2.0.
    thanks for any help ahead of time
    Thank you,

    Is it a wi-fi or cellular connection that isn't working?  If its wi-fi and other people/computers/phones can connect check your settings.  If its cellular, are other people's phones (on the same carrier) working in the same location? If other people can't connect then it is likely a network problem.  If others can you may need to reset/restore you iPhone.

  • How can we prevent back button  using java script

    how can we prevent back button using java script

    Would be quicker for you to google for javaScript
    javascript:window.history.forward(-1);

  • Need help about button

    Hi everybody!
    I'm from Italy, so I need help regarding button
    I create an animation, I put a button to replay the movie by this code:
    on (release) {
    gotoAndPlay(1);
    but in AS3 doesn't work. Can you help me pls?
    Another problem...I need a very simple preloader that display only percentage, stop.
    Anybody knows a template or tutorial about this?
    Thx in advance!

    What do you mean by scene2?. You can only preload external content like a picture, another swf, etc...a much simpler example:
    var myLoader:Loader = new Loader();
    addChildAt(myLoader,0)
    myLoader.load(new URLRequest("http://www.snowman-jim.org/science/images/north-pole-sun-moon.jpg"))
    myLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loading)
    myLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, finishLoading)
    function loading(e:ProgressEvent):void{
        info_txt.text="Loading.."Math.floor(e.currentTarget.bytesLoaded/1024)" Kb";//e.currentTarget is referring to myLoader.contentLoaderInfo
    function finalizado(e:Event):void{
        info_txt.text="I'm done!";
    Just change myLoader.load(new URLRequest("http://www.snowman-jim.org/science/images/north-pole-sun-moon.jpg")) path for the relevant path to the file you want to preload.

  • Please help me with these java puzzle ?

    Dear all,
    My friend send me typical java puzzle about java.util.ArrayList
    which is getting messy. Please help me out. It's not a homework.
    Please help me with these java puzzle ?
    Dear all,
    My friend send me typical java puzzle about java.util.ArrayList
    which is getting messy. Please help me out. It's not a homework.
    import java.util.*;
    public class MyInt ______ ________ {
    public static void main(String[] args) {
    ArrayList<MyInt> list = new ArrayList<MyInt>();
    list.add(new MyInt(2));
    list.add(new MyInt(1));
    Collections.sort(list);
    System.out.println(list);
    private int i;
    public MyInt(int i) { this.i = i; }
    public String toString() { return Integer.toString(i); }
    ________ int ___________ {
    MyInt i2 = (MyInt)o;
    return ________;
    }Hints , fill the underlines with below :
    implements
    extends
    Sortable
    Object
    Comparable
    protected
    public
    i = i2.i
    i
    i2.i=i
    compare(MyInt o, MyInt i2)
    compare(Object o, Object i2)
    sort(Object o) sort(MyInt o)
    compareTo(MyInt o)
    compareTo(Object o)

    Dear all,
    My friend send me typical java puzzle aboutNotwithstanding your pathetic protestations typicial
    of all your posts this is NOT a typical java "puzzle"
    but is indeed a typical homework puzzle.
    And it's damn easy if you spent 30 minutes with a
    tutorial.
    DO YOUR OWN HOMEWORK!
    Hey i did it.
    import java.util.*;
    public class MyInt implements Comparable {
    public static void main(String[] args) {
    ArrayList<MyInt> list = new ArrayList<MyInt>();
    list.add(new MyInt(2));
    list.add(new MyInt(1));
    Collections.sort(list);
    System.out.println(list);
    private int i;
    public MyInt(int i) { this.i = i; }
    public String toString() { return Integer.toString(i); }
    public int compareTo(Object o){
    MyInt i2 = (MyInt)o;
    return i;
    }E:\>javac MyInt.java
    Note: MyInt.java uses unchecked or unsafe operations.
    Note: Recompile with -Xlint:unchecked for details.
    E:\>java MyInt
    [1, 2]

  • I am in the process of doing a Proof Of Concept / Evaluating products that can help us build a Java Application to Convert a PDF document to a Searchable PDF.   I wanted to check is there any simple JAVA API from Adobe to achive this ? Any direction in th

    I am in the process of doing a Proof Of Concept / Evaluating products that can help us build a Java Application to Convert a PDF document to a Searchable PDF. 
    I wanted to check is there any simple JAVA API from Adobe to achive this ? Any direction in this regard is greatly appreciated.@

    You can achieve this using LiveCycle PDF Generator JAVA API. You can find required code here:
    Adobe LiveCycle * Quick Start (SOAP mode): Converting a Microsoft Word document to a PDF document using the Java API
    In parameters:
    //Set createPDF2 parameter values
    String adobePDFSettings = "Standard";
    String securitySettings = "No Security";
    String fileTypeSettings = "Standard OCR";
    "Standard OCR" file type setting will run OCR on input pdf. In the code, instead of doc file provide a pdf file. Resultant pdf will be searchable PDF i.e OCRed PDF.
    Feel feel to ask any further questions.

  • Multifunction buttons in JAVA

    Hi I am new to Java. I need to make a GUI that will contain triangular shaped buttons. The trianglular button is supposed to be divided into three parts starting from the vertex down to the base of the triangle. The button controls the speed of a motor. Clicking it on the top part should give a 100% speed command to the motor.Clicking it somewhere in the middle should run the motor at 60% speed and clicking it at the bottom part should make the motor run at 30% speed. I was wondering if there is such button in Java that allows us to call three different function if we click it in three different places...

    Nope, you'll need to build one.

  • How to add control buttons using Java thorugh serial port?

    Hi everyone,
    I'm new to this forum.
    I have some questions on Java and serial port.
    I want to write a Java program to control my robot, through serial port. For example, when I click "Forward", the robot will go forward, and so on.
    Now I already have the buttons, so next I would like to ask how to interface the buttons with the serial port.
    I already have all the javax.comm things installed.
    below is the code for my buttons:
    import java.awt.*;
    public class ControlButtons extends java.applet.Applet
         GridLayout myLayout = new GridLayout(3, 3);
         Button button1 = new Button(" ");
         Button buttonForward = new Button("Forward");
         Button button2 = new Button(" ");
         Button buttonLeft = new Button("Left");
         Button buttonStop = new Button("Stop");
         Button buttonRight = new Button("Right");
         Button button3 = new Button(" ");
         Button buttonReverse = new Button("Reverse");
         Button button4 = new Button(" ");
         public void init()
              setLayout(myLayout);
              add(button1);
              button1.setVisible(false);
              add(buttonForward);
              add(button2);
              button2.setVisible(false);
              add(buttonLeft);
              add(buttonStop);
              add(buttonRight);
              add(button3);
              button3.setVisible(false);
              add(buttonReverse);
              add(button4);
              button4.setVisible(false);
    }Now I would like to ask for direction on how to add in the code to make it work with serial port.
    Thanks

    The plan is, I have a robot device connected to the serial port.We don't know anything about that device. We don't know how to control it. We don't know what you have to write to the device to make it do anything. Only you know what.
    For example, when I click "Forward", the robot will go forward, and so on.So what do you have to send to make it do that? and same for the other buttons.
    Next, you need to work out from the javax.comm API how to open the serial port and send data to it. This is a standard exercise in learning a new API. You must be able to do this. Again and again.
    But the program is useless. The button can be clicked, but didn't do anything.Because (a) they have no ActionListeners and (b) there is no code to send anything to the serial port.
    You have to write all that. So you also have to look up ActionListener in the Java API and how to attach it to a button. You can do that. We all do that kind of thing every day.
    So next I would like to ask how to interface the buttons with the serial port.You've been asking nothing else since you started, but you've also only done enough investigation of your own to create the buttons. That's only the start.
    The problem is what method and command should I use to make those buttons actually functioning.See above. You've been told part of it several times. The rest only you can answer, because it's your robot.

Maybe you are looking for