package javafx_validatenumber;
import javafx.application.Application;
import javafx.event.ActionEvent;
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
*
* Validate and parse JavaFX TextField to various number,
* Integer, Short, Long, Byte, Float, Double
*/
public class JavaFX_ValidateNumber extends Application {
@Override
public void start(Stage primaryStage) {
Label labelInfo = new Label();
labelInfo.setText(
"java.version: " + System.getProperty("java.version") + "\n" +
"javafx.runtime.version: " + System.getProperty("javafx.runtime.version")
);
TextField textIn = new TextField();
Label labelAnswer = new Label();
Button btnIsInteger = new Button("is Integer?");
btnIsInteger.setOnAction((ActionEvent event) -> {
try{
Integer i = Integer.parseInt(textIn.getText());
labelAnswer.setText("Is Integer: " + i);
}catch (NumberFormatException e){
labelAnswer.setText("Not Integer!");
}
});
Button btnIsShort = new Button("is Short?");
btnIsShort.setOnAction((ActionEvent event) -> {
try{
Short i = Short.parseShort(textIn.getText());
labelAnswer.setText("Is Short: " + i);
}catch (NumberFormatException e){
labelAnswer.setText("Not Short!");
}
});
Button btnIsLong = new Button("is Long?");
btnIsLong.setOnAction((ActionEvent event) -> {
try{
Long i = Long.parseLong(textIn.getText());
labelAnswer.setText("Is Long: " + i);
}catch (NumberFormatException e){
labelAnswer.setText("Not Long!");
}
});
Button btnIsByte = new Button("is Byte?");
btnIsByte.setOnAction((ActionEvent event) -> {
try{
Byte i = Byte.parseByte(textIn.getText());
labelAnswer.setText("Is Byte: " + i);
}catch (NumberFormatException e){
labelAnswer.setText("Not Byte!");
}
});
Button btnIsFloat = new Button("is Float?");
btnIsFloat.setOnAction((ActionEvent event) -> {
try{
Float i = Float.parseFloat(textIn.getText());
labelAnswer.setText("Is Float: " + i);
}catch (NumberFormatException e){
labelAnswer.setText("Not Float!");
}
});
Button btnIsDouble = new Button("is Double?");
btnIsDouble.setOnAction((ActionEvent event) -> {
try{
Double i = Double.parseDouble(textIn.getText());
labelAnswer.setText("Is Double: " + i);
}catch (NumberFormatException e){
labelAnswer.setText("Not Double!");
}
});
VBox vBox = new VBox();
vBox.getChildren().addAll(labelInfo, textIn, btnIsInteger,
btnIsShort, btnIsLong, btnIsByte, btnIsFloat, btnIsDouble,
labelAnswer);
StackPane root = new StackPane();
root.getChildren().add(vBox);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
Saturday, July 18, 2015
Validate and parse JavaFX TextField to various number
Example to Validate and parse JavaFX TextField to various number: Integer, Short, Long, Byte, Float, Double.
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