create JavaFX Exception Dialog using Alert - Java JavaFX

Java examples for JavaFX:Dialog

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Description

create JavaFX Exception Dialog using Alert

Demo Code


import javafx.scene.control.Alert;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Priority;
import java.io.PrintWriter;
import java.io.StringWriter;

public class Main{
    public static final Alert createExceptionDialog(Throwable ex) {
        Alert alert = new Alert(Alert.AlertType.ERROR);
        // Create expandable Exception.
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        ex.printStackTrace(pw);//  w w w.j  a va2s . com
        String exceptionText = sw.toString();

        Label label = new Label("The exception stacktrace was:");

        TextArea textArea = new TextArea(exceptionText);
        textArea.setEditable(false);
        textArea.setWrapText(true);

        textArea.setMaxWidth(Double.MAX_VALUE);
        textArea.setMaxHeight(Double.MAX_VALUE);
        GridPane.setVgrow(textArea, Priority.ALWAYS);
        GridPane.setHgrow(textArea, Priority.ALWAYS);

        GridPane expContent = new GridPane();
        expContent.setMaxWidth(Double.MAX_VALUE);
        expContent.add(label, 0, 0);
        expContent.add(textArea, 0, 1);

        alert.getDialogPane().setExpandableContent(expContent);
        return alert;
    }
}

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