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POMemory raise on dialog button click in javafx application
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  1. POMemory raise on dialog button click in javafx application
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    copied!<p>I attached the following sample application of javafx, in that there is a dialog class which is used to dialog box. While click on button exist on dialog box - it memory get raised too much. Simply when the dialog box shows - support in taskmanager it takes 57kb and then as we click on button and on dispose the dialog - taskmanager shows its memory start increasing - and finally it got crash, Getting dump memory exception.</p> <p>There are following classes in the sample <strong>Dialog.java</strong> : it shows the dialog box with as ok - cancel button <strong>MessageDialog.fxml</strong> : this fxml create the the dialog <strong>MessageDialogController</strong> is associate file to MessageDialog.fxml <strong>JavaFXSample.java</strong> is the main class for runing this sample.</p> <p><strong>Dialog.java</strong></p> <pre><code>package javafxsample; import java.io.IOException; import java.io.InputStream; import javafx.fxml.FXMLLoader; import javafx.fxml.Initializable; import javafx.fxml.JavaFXBuilderFactory; import javafx.scene.Scene; import javafx.scene.image.Image; import javafx.scene.layout.AnchorPane; import javafx.stage.Modality; import javafx.stage.Stage; import javafx.stage.StageStyle; /** * * @author Admin */ public class Dialog { public static void ShowinfoDialog(String title, String Message, Stage parentStage, double w, double h) { if (title == null || title.trim().isEmpty()) { title = "Info"; } showMessageDialog(title, Message, parentStage, "sidetheme.png", w, h); } public static void showMessageDialog(String title, String Message, Stage parentStage, String image, double w, double h) { Stage stage = new Stage(); MessageDialogController messageDialogController = (MessageDialogController) replaceScene("/javafxsample/MessageDialog.fxml", stage); messageDialogController.init(stage, Message, image); if (parentStage != null) { stage.initOwner(parentStage); } stage.initModality(Modality.APPLICATION_MODAL); stage.initStyle(StageStyle.UTILITY); stage.setResizable(false); if (title != null &amp;&amp; !title.trim().isEmpty()) { stage.setTitle(title); } stage.setWidth(w); stage.setHeight(h); // Utility.setCentreLocation(stage, parentStage); InputStream inputStream = null; try { inputStream = Dialog.class.getResourceAsStream(image); stage.getIcons().add(new Image(inputStream)); } finally { if (inputStream != null) { try { inputStream.close(); } catch (IOException ex) { } } } stage.showAndWait(); } public static Initializable replaceScene(String fXml, Stage mystage) { InputStream in = null; try { FXMLLoader loader = new FXMLLoader(); in = Dialog.class.getResourceAsStream(fXml); loader.setLocation(Dialog.class.getResource(fXml)); loader.setBuilderFactory(new JavaFXBuilderFactory()); AnchorPane page; try { page = (AnchorPane) loader.load(in); } finally { in.close(); } Scene scene = new Scene(page); mystage.setScene(scene); return loader.getController(); } catch (Exception ex) { System.out.println("Exception in replaceScene. " + fXml + ".Error:" + ex.getMessage()); return null; } } } </code></pre> <p><strong>JavaFXSample.java</strong></p> <pre><code> /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package javafxsample; import javafx.application.Application; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.StackPane; import javafx.stage.Stage; /** * * @author JavaUser1 */ public class JavaFXSample extends Application { @Override public void start(final Stage primaryStage) { Button btn = new Button(); btn.setText(" Click on ME "); btn.setOnAction(new EventHandler&lt;ActionEvent&gt;() { @Override public void handle(ActionEvent event) { Dialog.ShowinfoDialog("Sample", "Clicked on button", primaryStage, 400.0, 150.0); } }); StackPane root = new StackPane(); root.getChildren().add(btn); Scene scene = new Scene(root, 300, 250); primaryStage.setTitle("Hello World!"); primaryStage.setScene(scene); primaryStage.show(); } /** * The main() method is ignored in correctly deployed JavaFX application. * main() serves only as fallback in case the application can not be * launched through deployment artifacts, e.g., in IDEs with limited FX * support. NetBeans ignores main(). * * @param args the command line arguments */ public static void main(String[] args) { launch(args); } } </code></pre> <p><strong>MessageDialog.fxml</strong></p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;?import java.lang.*?&gt; &lt;?import java.util.*?&gt; &lt;?import javafx.geometry.*?&gt; &lt;?import javafx.scene.*?&gt; &lt;?import javafx.scene.control.*?&gt; &lt;?import javafx.scene.layout.*?&gt; &lt;?import javafx.scene.text.*?&gt; &lt;AnchorPane id="AnchorPane" prefHeight="138.0" prefWidth="306.0" xmlns:fx="http://javafx.com/fxml" fx:controller="javafxsample.MessageDialogController"&gt; &lt;children&gt; &lt;TitledPane animated="false" collapsible="false" prefHeight="138.0" prefWidth="347.0" text="" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="-40.0"&gt; &lt;content&gt; &lt;AnchorPane id="Content" minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0"&gt; &lt;children&gt; &lt;GridPane prefHeight="112.0" prefWidth="282.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0"&gt; &lt;children&gt; &lt;Label fx:id="lblicon" text="" GridPane.columnIndex="0" GridPane.halignment="CENTER" GridPane.rowIndex="0"&gt; &lt;GridPane.margin&gt; &lt;Insets top="20.0" fx:id="x1" /&gt; &lt;/GridPane.margin&gt; &lt;/Label&gt; &lt;Label fx:id="lblMessage" text="" wrapText="true" GridPane.columnIndex="1" GridPane.rowIndex="0"&gt; &lt;font&gt; &lt;Font size="14.0" /&gt; &lt;/font&gt; &lt;GridPane.margin&gt; &lt;Insets left="2.0" top="20.0" /&gt; &lt;/GridPane.margin&gt; &lt;/Label&gt; &lt;Separator prefWidth="200.0" GridPane.columnIndex="0" GridPane.columnSpan="2" GridPane.rowIndex="1" /&gt; &lt;Separator prefWidth="200.0" GridPane.columnIndex="0" GridPane.columnSpan="2" GridPane.rowIndex="1"&gt; &lt;GridPane.margin&gt; &lt;Insets top="4.0" /&gt; &lt;/GridPane.margin&gt; &lt;/Separator&gt; &lt;HBox id="HBox" fx:id="hBox" alignment="CENTER" spacing="5.0" GridPane.columnIndex="0" GridPane.columnSpan="2" GridPane.halignment="CENTER" GridPane.rowIndex="2" /&gt; &lt;/children&gt; &lt;columnConstraints&gt; &lt;ColumnConstraints hgrow="SOMETIMES" maxWidth="82.0" minWidth="82.0" prefWidth="82.0" /&gt; &lt;ColumnConstraints hgrow="SOMETIMES" maxWidth="-1.0" minWidth="10.0" prefWidth="220.0" /&gt; &lt;/columnConstraints&gt; &lt;rowConstraints&gt; &lt;RowConstraints maxHeight="-1.0" minHeight="10.0" prefHeight="68.0" vgrow="SOMETIMES" /&gt; &lt;RowConstraints maxHeight="15.0" minHeight="15.0" prefHeight="15.0" vgrow="SOMETIMES" /&gt; &lt;RowConstraints maxHeight="29.0" minHeight="29.0" prefHeight="29.0" vgrow="SOMETIMES" /&gt; &lt;/rowConstraints&gt; &lt;/GridPane&gt; &lt;/children&gt; &lt;/AnchorPane&gt; &lt;/content&gt; &lt;/TitledPane&gt; &lt;/children&gt; &lt;/AnchorPane&gt; </code></pre> <p><strong>MessageDialogController.java</strong></p> <pre><code>/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package javafxsample; import java.io.InputStream; import java.net.URL; import java.util.ResourceBundle; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.fxml.FXML; import javafx.fxml.Initializable; import javafx.scene.control.Button; import javafx.scene.control.Label; import javafx.scene.image.Image; import javafx.scene.image.ImageView; import javafx.scene.layout.HBox; import javafx.stage.Stage; /** * FXML Controller class * * @author Admin */ public class MessageDialogController implements Initializable { @FXML private Label lblMessage; @FXML private Label lblicon; @FXML private HBox hBox; private Stage myStage; private String clicked = "cancel"; /** * Initializes the controller class. */ @Override public void initialize(URL url, ResourceBundle rb) { // TODO } public void btnOkEvent(ActionEvent event) { clicked = "yes"; myStage.close(); } public void btnCancelEvent(ActionEvent event) { clicked = "no"; myStage.close(); } public void init(Stage stage, String Message, String image) { Button btnOk = new Button("OK"); btnOk.setPrefSize(70.0, 23.0); btnOk.setOnAction(new EventHandler&lt;ActionEvent&gt;() { @Override public void handle(ActionEvent t) { btnOkEvent(t); } }); hBox.getChildren().add(btnOk); lblMessage.setText(Message); if (image != null &amp;&amp; !image.trim().isEmpty()) { Image imageRunBackupPlan = new Image(getClass().getResourceAsStream(image)); lblicon.setGraphic(new ImageView(imageRunBackupPlan)); } this.myStage = stage; } public void init(Stage stage, String Message, String btnOkText, String btnCancelText, String image) { clicked = "cancel"; Button btnOk = new Button(btnOkText); btnOk.setPrefHeight(23); Button btnCancel = new Button(btnCancelText); btnCancel.setPrefHeight(23); hBox.getChildren().addAll(btnOk, btnCancel); btnOk.setOnAction(new EventHandler&lt;ActionEvent&gt;() { @Override public void handle(ActionEvent t) { btnOkEvent(t); } }); btnCancel.setOnAction(new EventHandler&lt;ActionEvent&gt;() { @Override public void handle(ActionEvent t) { btnCancelEvent(t); } }); lblMessage.setText(Message); if (image != null &amp;&amp; !image.trim().isEmpty()) { InputStream inputStream = null; Image imageRunBackupPlan = new Image(getClass().getResourceAsStream(image)); lblicon.setGraphic(new ImageView(imageRunBackupPlan)); } this.myStage = stage; } public String clickedOn() { return clicked; } } </code></pre>
 

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