Popup Message boxes

Question

I am unsure of how to code popup message box in my methods   public String verify        String result    failed       int authcode   staffBean getVerifyCodeByName getLoginUserName          if  code    authcode                  result   success                 else    statement to popup an error message box            return result      I have tried to use JOptionPane in my method but it does not work   String st    Welcome   JOptionPane showMessageDialog null  st

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import javax swing    class Demo extends JFrame              String str1             Demo String s1                            str1 s1              JOptionPane showMessageDialog null  your message     str1                             public static void main  String ar                               new Demo  Java

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Use the following library  import javax swing JOptionPane   Input at the top of the code-line  You must only add this  because the other things is done correctly

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A couple of  enhancements  I use for debugging  especially when running projects  ie not in debug mode     Default the message-box title to the name of the calling method  This is handy for stopping a thread at a given point  but must be cleaned-up before release  Automatically copy the caller-name and message to the clipboard  because you can t search an image   package forumposts   import java awt Toolkit  import java awt datatransfer Clipboard  import java awt datatransfer StringSelection  import javax swing JOptionPane   public final class MsgBox       public static void info String message            info message  theNameOfTheMethodThatCalledMe               public static void info String message  String caller            show message  caller  JOptionPane INFORMATION MESSAGE              static void error String message            error message  theNameOfTheMethodThatCalledMe               public static void error String message  String caller            show message  caller  JOptionPane ERROR MESSAGE              public static void show String message  String title  int iconId            setClipboard title     NEW LINE message           JOptionPane showMessageDialog null  message  title  iconId             private static final String NEW LINE   System lineSeparator         public static String theNameOfTheMethodThatCalledMe             return Thread currentThread   getStackTrace   3  getMethodName               public static void setClipboard String message            CLIPBOARD setContents new StringSelection message   null              nb  we don t respond to the  your content was splattered                 event  so it s OK to pass a null owner            private static final Toolkit AWT TOOLKIT   Toolkit getDefaultToolkit        private static final Clipboard CLIPBOARD   AWT TOOLKIT getSystemClipboard          The full class also has debug and warning methods  but I cut them for brevity and you get the main points anyway  You can use a public static boolean isDebugEnabled to suppress debug messages  If done properly the optimizer will  almost  remove these method calls from your production code  See  http   c2 com cgi wiki ConditionalCompilationInJava  Cheers  Keith

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Ok  SO Basically I think I have a simple and effective solution   package AnotherPopUpMessage  import javax swing JOptionPane  public class AnotherPopUp       public static void main String   args               TODO Auto-generated method stub         JOptionPane showMessageDialog null   Again  Where do all these come from                  PopUp4   JOptionPane CLOSED OPTION

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javax swing JOptionPane  Here is the code to a method I call whenever I want an information box to pop up  it hogs the screen until it is accepted   import javax swing JOptionPane   public class ClassNameHere        public static void infoBox String infoMessage  String titleBar                JOptionPane showMessageDialog null  infoMessage   InfoBox      titleBar  JOptionPane INFORMATION MESSAGE             The first JOptionPane parameter  null in this example  is used to align the dialog  null causes it to center itself on the screen  however any java awt Component can be specified and the dialog will appear in the center of that Component instead   I tend to use the titleBar String to describe where in the code the box is being called from  that way if it gets annoying I can easily track down and delete the code responsible for spamming my screen with infoBoxes   To use this method call   ClassNameHere infoBox  YOUR INFORMATION HERE    TITLE BAR MESSAGE        javafx scene control Alert  For a an in depth description of how to use JavaFX dialogs see  JavaFX Dialogs  official  by code makery  They are much more powerful and flexible than Swing dialogs and capable of far more than just popping up messages   As above I ll post a small example of how you could use JavaFX dialogs to achieve the same result  import javafx scene control Alert  import javafx scene control Alert AlertType  import javafx application Platform   public class ClassNameHere        public static void infoBox String infoMessage  String titleBar                   By specifying a null headerMessage String  we cause the dialog to            not have a header            infoBox infoMessage  titleBar  null              public static void infoBox String infoMessage  String titleBar  String headerMessage                Alert alert   new Alert AlertType INFORMATION           alert setTitle titleBar           alert setHeaderText headerMessage           alert setContentText infoMessage           alert showAndWait              One thing to keep in mind is that JavaFX is a single threaded GUI toolkit  which means this method should be called directly from the JavaFX application thread  If you have another thread doing work  which needs a dialog then see these SO Q amp As  JavaFX2  Can I pause a background Task   Service  and Platform Runlater and Task Javafx   To use this method call   ClassNameHere infoBox  YOUR INFORMATION HERE    TITLE BAR MESSAGE      or  ClassNameHere infoBox  YOUR INFORMATION HERE    TITLE BAR MESSAGE    HEADER MESSAGE

User · Answer

JOptionPane showMessageDialog btn1   you are clicked save button   title of dialog  2     btn1 is a JButton variable and its used in this dialog to dialog open position btn1 or textfield etc  by default use null position of the frame next your message and next is the title of dialog  2 numbers of alert type icon 3 is the information 1 2 3 4  Ok I hope you understand it

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first you have to import  import javax swing JOptionPane  then you can call it using this   JOptionPane showMessageDialog null                                  ALERT MESSAGE                                   TITLE                                  JOptionPane WARNING MESSAGE     the null puts it in the middle of the screen  put whatever in quotes under alert message   Title is obviously title and the last part will format it like an error message  if you want a regular message just replace it with PLAIN MESSAGE  it works pretty well in a lot of ways mostly for errors

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POP UP WINDOWS IN APPLET  hi guys i was searching pop up windows in applet all over the internet but could not find answer for windows    Although it is simple i am just helping you  Hope you will like it as it is in simpliest form   here s the code    Filename  PopUpWindow java for java file and we need html file too   For applet let us take its popup html  CODE   import java awt     import java applet     import java awt event     public class PopUpWindow extends Applet   public void init     Button open   new Button  open window     add open    Button close   new Button  close window     add close     Frame f   new Frame  pupup win       f setSize 200 200        open addActionListener new ActionListener                       public void actionPerformed ActionEvent e                         if  f isShowing                               f setVisible true                                                                   close addActionListener new ActionListener                       public void actionPerformed ActionEvent e                         if f isShowing                              f setVisible false                                                                                lt html gt    lt body gt    lt APPLET CODE  PopUpWindow  width    height    gt    lt  APPLET gt    lt  body gt    lt  html gt        to run   javac PopUpWindow java  amp  amp  appletviewer popup html

[java] Popup Message boxes

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