Не работает программа (JavaFx) [требует правки]

package Controllers;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
public class Controller {
@FXML
private Button btn;
@FXML
private TextField input;
@FXML
private Label value;
public void Click(ActionEvent actionEvent) {
    try{
//            int Input = Integer.valueOf(input.getText());
        float Input = Float.valueOf(input.getText());
        String Value = value.getText();
        while (Input == 100.1) {
            switch (Value) {
                case "3 / 2": if(Input == 1.5) {
                    value.setText("6 / 2");
                } else {
                    value.setText("False");
                }; break;
                case "6 / 2": if(Input == 3.1) {
                    value.setText("10 / 2");
                } else {
                    value.setText("False");
                }; break;
            }
        }
    } catch (Exception e) { value.setText("Enter only num!!");}
}
}