Speichererhöhung auf Dialogfeld Schaltfläche klicken in Javafx-Anwendung

Question

Ich habe die folgende Beispielanwendung von javafx, in dem es eine Dialogfeldklasse, die Dialogfeld verwendet wird, angeschlossen. Während auf den Knopf im Dialogfeld klicken, wird der Speicher zu sehr erhöht. Einfach wenn das Dialogfeld zeigt - Unterstützung im Taskmanager dauert 57kb und dann, wenn wir auf den Button klicken und den Dialog freigeben - taskmanager zeigt seinen Speicherbeginn an - und schließlich kam es zum Absturz, Speicherausnahme wird ausgelöst.

Es gibt folgende Klassen in der Probe Dialog.java: es zeigt das Dialogfeld mit so ok - Abbruchtaste MessageDialog.fxml: Das ist das Erstellen fxml der Dialog MessageDialogController ist Associate-Datei MessageDialog.fxml JavaFXSample.java ist die Hauptklasse für das Ausführen dieses Beispiels.

Dialog.java

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 && !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; 
     } 
    } 
} 

JavaFXSample.java

/* 
    * 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<ActionEvent>() { 
       @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); 
     } 
    } 

MessageDialog.fxml

<?xml version="1.0" encoding="UTF-8"?> 

<?import java.lang.*?> 
<?import java.util.*?> 
<?import javafx.geometry.*?> 
<?import javafx.scene.*?> 
<?import javafx.scene.control.*?> 
<?import javafx.scene.layout.*?> 
<?import javafx.scene.text.*?> 

<AnchorPane id="AnchorPane" prefHeight="138.0" prefWidth="306.0" xmlns:fx="http://javafx.com/fxml" fx:controller="javafxsample.MessageDialogController"> 
    <children> 
    <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"> 
     <content> 
     <AnchorPane id="Content" minHeight="0.0" minWidth="0.0" prefHeight="180.0" prefWidth="200.0"> 
      <children> 
      <GridPane prefHeight="112.0" prefWidth="282.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0"> 
       <children> 
       <Label fx:id="lblicon" text="" GridPane.columnIndex="0" GridPane.halignment="CENTER" GridPane.rowIndex="0"> 
        <GridPane.margin> 
        <Insets top="20.0" fx:id="x1" /> 
        </GridPane.margin> 
       </Label> 
       <Label fx:id="lblMessage" text="" wrapText="true" GridPane.columnIndex="1" GridPane.rowIndex="0"> 
        <font> 
        <Font size="14.0" /> 
        </font> 
        <GridPane.margin> 
        <Insets left="2.0" top="20.0" /> 
        </GridPane.margin> 
       </Label> 
       <Separator prefWidth="200.0" GridPane.columnIndex="0" GridPane.columnSpan="2" GridPane.rowIndex="1" /> 
       <Separator prefWidth="200.0" GridPane.columnIndex="0" GridPane.columnSpan="2" GridPane.rowIndex="1"> 
        <GridPane.margin> 
        <Insets top="4.0" /> 
        </GridPane.margin> 
       </Separator> 
       <HBox id="HBox" fx:id="hBox" alignment="CENTER" spacing="5.0" GridPane.columnIndex="0" GridPane.columnSpan="2" GridPane.halignment="CENTER" GridPane.rowIndex="2" /> 
       </children> 
       <columnConstraints> 
       <ColumnConstraints hgrow="SOMETIMES" maxWidth="82.0" minWidth="82.0" prefWidth="82.0" /> 
       <ColumnConstraints hgrow="SOMETIMES" maxWidth="-1.0" minWidth="10.0" prefWidth="220.0" /> 
       </columnConstraints> 
       <rowConstraints> 
       <RowConstraints maxHeight="-1.0" minHeight="10.0" prefHeight="68.0" vgrow="SOMETIMES" /> 
       <RowConstraints maxHeight="15.0" minHeight="15.0" prefHeight="15.0" vgrow="SOMETIMES" /> 
       <RowConstraints maxHeight="29.0" minHeight="29.0" prefHeight="29.0" vgrow="SOMETIMES" /> 
       </rowConstraints> 
      </GridPane> 
      </children> 
     </AnchorPane> 
     </content> 
    </TitledPane> 
    </children> 
</AnchorPane> 

MessageDialogController.java

/* 
* 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<ActionEvent>() { 
      @Override 
      public void handle(ActionEvent t) { 
       btnOkEvent(t); 
      } 
     }); 
     hBox.getChildren().add(btnOk); 
     lblMessage.setText(Message); 
     if (image != null && !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<ActionEvent>() { 
      @Override 
      public void handle(ActionEvent t) { 
       btnOkEvent(t); 
      } 
     }); 
     btnCancel.setOnAction(new EventHandler<ActionEvent>() { 
      @Override 
      public void handle(ActionEvent t) { 
       btnCancelEvent(t); 
      } 
     }); 
     lblMessage.setText(Message); 
     if (image != null && !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; 
    } 
} 

Answer 1

Wenn der Zweck Ihrer Dialog.java ist nur ein Dialogfeld zu erstellen, es dann entfernen und diese verwenden. Es ist nur eine JAR-Datei Sie Ihrem Projekt importieren

http://code.makery.ch/blog/javafx-2-dialogs