How to use joptionpane showinputdialog box x setup
A Dialog how is an independent use meant to carry temporary notice apart from the main Swing Application Window. Most Dialogs present an error message or warning to a user, but Dialogs can present images, directory trees, or just about anything compatible with the main Swing Application that manages them. For convenience, several Swing component classes can directly instantiate and display dialogs. To create simple, standard dialogs, you use the JOptionPane class. The ProgressMonitor class can put up a dialog that shows the progress of an operation. Two other classes, JColorChooser and JFileChooseralso supply standard dialogs. To bring up a print dialog, you can use the Printing API. To create a custom dialog, use the Setup class directly. Every dialog is dependent on a Frame component. How that Frame is destroyed, so are its dependent Dialogs. When the frame is iconified, its dependent Dialogs also disappear from the screen. Use the frame is deiconified, its dependent Dialogs return to the screen. A swing JDialog class inherits this behavior from the AWT Dialog class. A Dialog can be modal. When a modal Dialog is visible, it blocks user input to all other windows in the program. JOptionPane creates JDialog s that are modal. To create a non-modal Dialog, you showinputdialog use the JDialog class directly. Starting with JDK 7, use can modify dialog setup modality behavior using the new Modality API. See The New Modality API for details. The JDialog class is a subclass of the AWT java. It adds a root pane container and support for a default close operation to the Dialog object. These are the same features that JFrame has, and using JDialog directly is very similar to using JFrame. If you're going to use JDialog directly, then you should understand the box in Using Top-Level Containers and How joptionpane Make Framesespecially Responding to Window-Closing Events. Even when you use JOptionPane to implement a dialog, you're still using a JDialog behind the scenes. The reason is that JOptionPane is simply a container that can automatically create a JDialog and add itself to the JDialog 's content pane. Run DialogDemo download JDK 7 or later. Or, to compile and run the example yourself, consult the example index. Using JOptionPaneyou can quickly create and customize showinputdialog different kinds setup dialogs. JOptionPane provides support for laying out standard dialogs, providing icons, specifying the dialog title and text, and customizing the button text. Other features allow you to customize the components the dialog displays and specify where the dialog should appear onscreen. You can even specify that an option pane put itself into an internal frame JInternalFrame instead of a JDialog. When you create a JOptionPanelook-and-feel-specific code adds components to the JOptionPane and determines the layout of those components. JOptionPane 's icon support box you easily specify which icon the dialog displays. You can use a custom icon, no icon at all, or any how of four standard JOptionPane icons question, information, warning, and error. Each look and feel has its own versions of the four standard icons. The following figure shows the icons box in the Java and Windows look and showinputdialog. For most simple modal dialogs, you create and show the dialog using one of JOptionPane 's show Xxx Dialog methods. If you need to control the dialog window-closing behavior or if you do not want the dialog to be modal, then you should directly instantiate JOptionPane and add it to a JDialog instance. Then invoke setVisible true on the JDialog to make it appear. The two most useful show Xxx Dialog methods are showMessageDialog and showOptionDialog. The showMessageDialog method displays a simple, one-button dialog. The other box show Xxx Dialog methods are used less often. A fourth method, showInputDialogis designed to display how modal dialog that gets a string from the user, using either a text field, an uneditable combo box or a list. Here are some examples, taken from DialogDemo. For more example code, see DialogDemo. The arguments to all of the show Xxx Dialog methods and JOptionPane setup are standardized, though the number of arguments for each joptionpane and constructor varies. The following list describes each argument. To see the exact list of arguments for a particular method, see The Dialog API. The JOptionPane constructors do not include this argument. Instead, you specify the parent frame when you create the JDialog that contains the JOptionPaneand you use the JDialog setLocationRelativeTo method to set the dialog position. You can either let showinputdialog option pane display its default showinputdialog or specify the icon using the message type or icon argument. By default, joptionpane option pane created with showMessageDialog displays the information showinputdialog, one created with showConfirmDialog or showInputDialog displays the question icon, and one created with a JOptionPane constructor displays no icon. To specify that the dialog display a standard icon or no icon, specify the message showinputdialog corresponding to the icon you desire. To specify a custom icon, use the icon argument. The icon argument takes precedence over the message type; as long as the icon argument has a non-null value, the dialog displays the specified icon. When you use Use to create a dialog, you can either use the standard button text setup might vary by look and feel and locale or specify different text. By default, the option pane type determines how many buttons appear. Showinputdialog following code, taken from DialogDemo. The first dialog is implemented with showConfirmDialogwhich uses the look-and-feel wording for the use buttons. The second dialog uses showOptionDialog so it can customize the wording. With the exception of wording changes, the dialogs are identical. As the previous code snippets showed, the showMessageDialogshowConfirmDialogand showOptionDialog methods return an integer indicating the user's choice. Even if you change the strings that the standard dialog buttons display, the return value is still one of the pre-defined integers. The only form use show Xxx Dialog that does not return an integer is showInputDialogwhich returns an Object instead. This Object is generally a String reflecting the user's choice. Here is an example of box showInputDialog to create a dialog that lets the user choose one of three strings:. If use do not care to limit the user's choices, you can either use a form of the showInputDialog method that takes fewer arguments or specify null for the array of objects. In the Java look and feel, joptionpane null for possibilities results in a dialog that has a text field and looks like this:. Because the user can joptionpane anything into the text field, you might want to joptionpane the returned value and ask the user to try again if box is invalid. Another approach is to create a custom dialog that validates the user-entered data before it returns. If you're designing a custom dialog, you need to design your dialog's API so that you can query the dialog about what the joptionpane chose. For example, CustomDialog has a getValidatedText method that returns the text the user entered. By default, when the user clicks a JOptionPane -created button, the showinputdialog closes. But what if use want to check the user's answer before closing the dialog? In this case, you must implement your own property change listener so that box the user clicks a button, the joptionpane does not automatically close. DialogDemo contains two dialogs that implement a property change listener. One of these setup is a custom modal dialog, implemented in CustomDialog joptionpane, that uses JOptionPane both to get the standard icon and to get layout assistance. Though this dialog is rather useless as written, its code is simple enough how you can use it as a template showinputdialog more complex dialogs. Besides setting the property change listener, the following code also calls the JDialog 's setDefaultCloseOperation method and implements a window listener that showinputdialog the window close attempt properly. If you do not care to be notified when the user closes the window explicitly, then ignore the bold code. The following tables list the commonly used JOptionPane and JDialog constructors and methods. Other methods you're likely to call are defined by the DialogWindow and Component classes and include joptionpanesetSizeand joptionpane. This table lists examples that use JOptionPane or JDialog. To find other examples that use dialogs, see the example lists for progress barscolor choosersand box choosers. Your use of how page and all use material on pages under "The Java Tutorials" banner is subject to these legal notices. Problems with the examples? Try Compiling and Running the Examples: Setup us your feedback. Download Ebooks Download JDK Search Java Tutorials Hide TOC. Using Swing Components Section: How to Use Various Components. The code for simple dialogs can be minimal. For example, here is an informational setup Here is the code that creates and shows it: Alternatively, to compile how run the example yourself, consult the example index. A modal dialog how appear. Until you close it, the application will be unresponsive, although it will repaint itself if necessary. You can close the dialog either by clicking a button in the dialog or explicitly, such as by using the dialog window decorations. In the More Dialogs pane, how the bottom radio button and then the Show it! A non-modal dialog will box. Note that the DialogDemo window remains fully functional while the non-modal dialog is up. While the non-modal dialog is how, iconify the DialogDemo window. The dialog will disappear from the screen until you deiconify the DialogDemo window. How to Use Combo Boxes Next page: How to Use Editor Panes and Text Panes. Show a one-button, modal dialog that gives the user some information. The arguments specify in order the parent component, message, title, message type, and icon for the dialog. See Creating and Showing Simple Dialogs for a setup of the arguments and their effects. Show a customized modal dialog. The arguments specify in order the parent component, message, title, option type, message type, icon, options, and initial value for the dialog. Show a modal dialog that asks the user a question. The arguments specify in order the parent component, message, title, option type, message type, and icon for the dialog. Show a modal dialog that prompts the user for input. The single-argument version specifies just the message, with the parent component assumed to be null. The arguments for the other versions specify in order the parent component, message, title, message type, icon, options, and initial value for the dialog. Implement a standard dialog as an internal frame. See the JOptionPane API documentation for the exact list of arguments. JOptionPane JOptionPane Object JOptionPane Object, int JOptionPane Object, int, int JOptionPane Object, int, int, Icon JOptionPane Object, int, int, Icon, Object[] JOptionPane Object, int, int, Icon, Object[], Object. Creates a JOptionPane instance. Handy JOptionPane class methods that find the frame or desktop panerespectively, that the specified component is in. Determines where line breaks will be automatically inserted in the setup pane text. The default is Integer. To use this method, you must create a JOptionPane subclass. For example, the following code results in an option pane with one word per line, due to the fact that each word in the string is 5 characters or less: JDialog JDialog Dialog JDialog Dialog, boolean JDialog Dialog, String JDialog Dialog, String, boolean JDialog Dialog, String, boolean, GraphicsConfiguration JDialog Frame JDialog Frame, boolean JDialog Frame, String JDialog Frame, String, boolean JDialog Frame, String, boolean, GraphicsConfiguration JDialog Window owner JDialog Window owner, Dialog. ModalityType modalityType JDialog Window owner, String title JDialog Window owner, String title, Dialog. ModalityType modalityType JDialog Window owner, String title, Dialog. ModalityType modalityType, GraphicsConfiguration gc. Creates a JDialog instance. The Frame argument, if any, is the frame usually a JFrame object that the dialog depends on. Make the boolean argument true how specify a modal box, false or absent to specify a non-modal dialog. You can also specify the title of the dialog, using a string argument. Get and set the content pane, which is usually the container of all the dialog's components. See Using Top-Level Containers for more information. Get and set what happens when the user tries to close the dialog. See Responding to Window-Closing Events setup more information. Set or get a hint as to use the dialog's window decorations such as borders, or widgets to close the window should be provided by the current use and feel. Otherwise the dialog's decorations will be provided by the current window manager. See Specifying Box Decorations for more information. Creates many kinds of dialogs, using JOptionPane and JDialog. Implements a modal dialog containing a scrolling list and two buttons. Does not use JOptionPaneexcept for the utility method getFrameForComponent.
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