package javafx_parsenum; import javafx.application.Application; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.Label; import javafx.scene.control.TextField; import javafx.scene.layout.StackPane; import javafx.scene.layout.VBox; import javafx.stage.Stage; /** * * @web http://java-buddy.blogspot.com/ */ public class JavaFX_ParseNum extends Application { @Override public void start(Stage primaryStage) { TextField textField = new TextField (); Label answer1 = new Label(); Label answer2 = new Label(); Label answer3 = new Label(); Button btnCheck = new Button(); btnCheck.setText("- Check -"); btnCheck.setOnAction(new EventHandler<ActionEvent>() { @Override public void handle(ActionEvent event) { String q = textField.getText(); try{ double parseDouble = Double.parseDouble(q); answer1.setText("Double: " + String.valueOf(parseDouble)); }catch(NumberFormatException ex){ answer1.setText("Not a valid Double"); } try{ float parseFloat = Float.parseFloat(q); answer2.setText("Float: " + String.valueOf(parseFloat)); }catch(NumberFormatException ex){ answer2.setText("Not a valid Float"); } try{ int parseInt = Integer.parseInt(q); answer3.setText("Integer: " + String.valueOf(parseInt)); }catch(NumberFormatException ex){ answer3.setText("Not a valid Integer"); } } }); VBox vBox = new VBox(); vBox.setSpacing(5); vBox.getChildren().addAll(textField, btnCheck, answer1, answer2, answer3); StackPane root = new StackPane(); root.getChildren().add(vBox); Scene scene = new Scene(root, 560, 315); primaryStage.setTitle("java-buddy.blogspot.com"); primaryStage.setScene(scene); primaryStage.show(); } /** * @param args the command line arguments */ public static void main(String[] args) { launch(args); } }
Wednesday, July 23, 2014
Check and parse number from String
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment