Showconfirmdialog null

The dialog boxes can be of any type such as confirm dialog box, message dialog box or input dialog box. These dialog boxes can be used to display information to the user or to get input from the user. JComponent is a base class for Swing Components and Accessible is the main interface for the accessibility package. They both provide a standard mechanism that is required to support swing architecture.

While there is a large number of methods in the JOptionPane class, they all fit in the format of showXxxDialog as below:. All of these methods also come in showInternalXXX flavor, which will use an internal frame to hold the dialog box.

Below are the commonly used methods in JOptionPane class:. Here developers have the flexibility to pass arguments such as parent component, message, title of dialog box, option type, message type, icon. The initial value represents the default selection of options on the dialog box. Almost all the methods from the JOptionPane class are static methods. Mostly we will access them directly without creating an instance of JOptionPane. Here, the parent component is passed as null which means that there will be no parent for the dialog box and String argument is text message which will be shown on dialog box as information to the user.

In windows-based applications, Java Swing makes it very easy to develop them and it is a very powerful API. JOptionPane being a part of it simplifies creating dialog boxes in an easy manner. It provides standard dialog boxes such as the input dialog box, confirms dialog box and message dialog box. We can create our own custom dialog boxes as well.

Since JOptionPane provides standard dialog boxes, it is very useful. Is that correct? I have tried changing response to a String and yes, I used the. Even when there is not an int in the program, I still get the error. Please let me know if you need my object's code, but I don't see why it would be needed in this case. According to javadoc , I guess you are trying to use this method:. Change your String response to int response and eval your condition with a integer status for example, 0 it's Ok, 1 it's Cancel Read de doc Documentaction.

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Active 6 years, 2 months ago. Viewed 1k times. I get the following error: PokemonDemo. My name is Oak. When the selection is changed, setValue is invoked, which generates a PropertyChangeEvent. For more information see Swing's Threading Policy. Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1. Please see XMLEncoder.

JComponent JComponent. Container Container. Component Component. BaselineResizeBehavior , Component. BltBufferStrategy , Component. Fields inherited from class javax. JOptionPane Object message, int messageType, int optionType, Icon icon, Object [] options, Object initialValue Creates an instance of JOptionPane to display a message with the specified message type, icon, and options, with the initially-selected option specified. Icon getIcon Returns the icon this pane displays.

Object getInitialSelectionValue Returns the input value that is displayed as initially selected to the user. Object getInitialValue Returns the initial value. Object getInputValue Returns the value the user has input, if wantsInput is true. Object getMessage Returns the message-object this pane displays. Object [] getOptions Returns the choices the user can make. Object [] getSelectionValues Returns the input selection values. Object getValue Returns the value the user has selected.

Methods inherited from class javax. Look and feel will provide the UI component to choose this from. None of the options is initially selected. The options objects should contain either instances of Component s, which are added directly or Strings which are wrapped in a JButton. If you provide Component s, you must ensure that when the Component is clicked it messages setValue in the created JOptionPane.

The dialog uses the default frame, which usually means it is centered on the screen. Parameters: message - the Object to display initialSelectionValue - the value used to initialize the input field Since: 1. The dialog is displayed on top of the Component 's frame, and is usually positioned below the Component. The input value will be initialized to initialSelectionValue.

Parameters: parentComponent - the parent Component for the dialog message - the Object to display initialSelectionValue - the value used to initialize the input field Since: 1. The user will able to choose from selectionValues , where null implies the user can input whatever they wish, usually by means of a JTextField. Parameters: parentComponent - determines the Frame in which the dialog is displayed; if null , or if the parentComponent has no Frame , a default Frame is used message - the Object to display Throws: HeadlessException - if GraphicsEnvironment.

Parameters: parentComponent - determines the Frame in which the dialog is displayed; if null , or if the parentComponent has no Frame , a default Frame is used message - the Object to display Returns: an integer indicating the option selected by the user Throws: HeadlessException - if GraphicsEnvironment. The messageType parameter is primarily used to supply a default icon from the Look and Feel. Parameters: parentComponent - determines the Frame in which the dialog is displayed; if null , or if the parentComponent has no Frame , a default Frame is used.

The messageType parameter is primarily used to supply a default icon from the look and feel. The returned JDialog will not be resizable by the user, however programs can invoke setResizable on the JDialog instance to change this property.

The returned JDialog will be set up such that once it is closed, or the user clicks on one of the buttons, the optionpane's value property will be set accordingly and the dialog will be closed. Each time the dialog is made visible, it will reset the option pane's value property to JOptionPane.

Parameters: parentComponent - determines the frame in which the dialog is displayed; if the parentComponent has no Frame , a default Frame is used title - the title string for the dialog Returns: a new JDialog containing this instance Throws: HeadlessException - if GraphicsEnvironment.

Parameters: title - the title string for the dialog Returns: a new JDialog containing this instance Throws: HeadlessException - if GraphicsEnvironment. The dialog is a information-message dialog titled "Message". Parameters: parentComponent - determines the Frame in which the dialog is displayed; if null , or if the parentComponent has no Frame , a default Frame is used message - the object to display showInternalMessageDialog public static void showInternalMessageDialog Component parentComponent, Object message, String title, int messageType Brings up an internal dialog panel that displays a message using a default icon determined by the messageType parameter.

Parameters: parentComponent - determines the Frame in which the dialog is displayed; if null , or if the parentComponent has no Frame , a default Frame is used message - the Object to display Returns: an integer indicating the option selected by the user showInternalConfirmDialog public static int showInternalConfirmDialog Component parentComponent, Object message, String title, int optionType Brings up a internal dialog panel where the number of choices is determined by the optionType parameter.

Parameters: parentComponent - determines the Frame in which the dialog is displayed; if null , or if the parentComponent has no Frame , a default Frame is used message - the object to display in the dialog; a Component object is rendered as a Component ; a String object is rendered as a string.

The dialog is displayed in the Component 's frame, and is usually positioned below the Component. Parameters: parentComponent - the parent Component for the dialog message - the Object to display showInternalInputDialog public static String showInternalInputDialog Component parentComponent, Object message, String title, int messageType Shows an internal dialog requesting input from the user parented to parentComponent with the dialog having the title title and message type messageType.

The internal frame is created with the specified title, and wrapping the JOptionPane. Parameters: parentComponent - the Component to check for a Frame Returns: the Frame that contains the component, or getRootFrame if the component is null , or does not have a valid Frame parent Throws: HeadlessException - if GraphicsEnvironment.

Parameters: parentComponent - the Component to check for a desktop Returns: the JDesktopPane that contains the component, or null if the component is null or does not have an ancestor that is a JInternalFrame setRootFrame public static void setRootFrame Frame newRootFrame Sets the frame to use for class methods in which a frame is not provided.

Note: It is recommended that rather than using this method you supply a valid parent. Frame , GraphicsEnvironment. Returns: the Object that is displayed See Also: setMessage java. If non- null , the look and feel does not provide an icon.

Returns: the Icon that is displayed See Also: setIcon javax. Otherwise the returned value will be one of the options defined in this object.