Question

我正在使用JavaFx开展学校作业。分配是创建一个程序，使用JavaFx GUI在十进制，十六进制和二进制数之间进行转换。 GUI有3个字段，分别用于十进制，十六进制和二进制。您应该在任何字段中输入一个数字并按Enter键，它将为您提供相应文本字段中的转换。任何帮助将不胜感激。

提前致谢。这是代码：

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.input.KeyCode;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class Exercise16_05 extends Application {
    private TextField tfDecimal = new TextField();
    private TextField tfHex = new TextField();
    private TextField tfBinary = new TextField();       

    @Override
    // Override the start method in the Application class
    public void start(Stage primaryStage) {


        // Create UI
        GridPane gridPane = new GridPane();
        gridPane.setHgap(5);
        gridPane.setVgap(5);
        gridPane.add(new Label("Decimal: "), 0, 0);
        gridPane.add(tfDecimal, 1, 0);
        gridPane.add(new Label("Hex: "), 0, 1);
        gridPane.add(tfHex, 1, 1);
        gridPane.add(new Label("Binary"), 0, 2);
        gridPane.add(tfBinary, 1, 2);

        // Create the scene
        Scene scene = new Scene(gridPane, 400, 200);
        primaryStage.setTitle("Exercise 16_05");
        primaryStage.setScene(scene);
        primaryStage.show();

        tfDecimal.setOnKeyPressed(e -> {
            if (e.getCode()== KeyCode.ENTER) {              // When ENTER is pressed

                int decimal = Integer.parseInt(tfDecimal.getText());
                String decToHex = Integer.toHexString(decimal);
                String decToBi = Integer.toBinaryString(decimal);

                tfBinary.setText(String.format(decToBi));
                tfHex.setText(String.format(decToHex));

            }
        });

        tfHex.setOnKeyPressed(e -> {
            if (e.getCode()== KeyCode.ENTER) {

                int hex = Integer.parseInt(tfHex.getText(), 16); // Get data from text field
                String hexToDec = Integer.toString(hex);
                String hexToBi = Integer.toBinaryString(hex);

                 // Display hex to Bi and hex to Dec
                tfBinary.setText(String.format(hexToBi));
                tfDecimal.setText(hexToDec);

            }
        });

        tfBinary.setOnKeyPressed(e -> {
            if (e.getCode() == KeyCode.ENTER) {

                int binary = Integer.parseInt(tfBinary.getText(),2);
                String biToHex = Integer.toHexString(binary);
                 String biToDec = Integer.toString(binary);
                // String biToDec = Integer.parseInt(binary);

                tfHex.setText(String.format(biToHex));
                tfDecimal.setText(biToDec);
            }
        });
    }

}

Answer 1

哇，对不起，我刚刚看到我没有主要方法发布（args）;对不起，我要快速扣动扳机。我两端都烧着蜡烛。

JavaFx号码转换

1 个答案: