README.md

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-# BHD
-

test.java

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+package java6310.lesson01;
+
+import javafx.application.Application;
+import javafx.collections.FXCollections;
+import javafx.geometry.Insets;
+import javafx.scene.Scene;
+import javafx.scene.control.*;
+import javafx.scene.layout.VBox;
+import javafx.stage.Stage;
+
+public class test extends Application {
+
+    private TextField inputField;
+    private ComboBox<String> fromBaseComboBox;
+    private ComboBox<String> toBaseComboBox;
+    private TextField outputField;
+    private Button convertButton;
+
+    @Override
+    public void start(Stage primaryStage) {
+        primaryStage.setTitle("进制转换工具");
+
+        Label inputLabel = new Label("输入数值：");
+        inputField = new TextField();
+
+        Label fromBaseLabel = new Label("原进制：");
+        fromBaseComboBox = new ComboBox<>(FXCollections.observableArrayList("2", "8", "10", "16"));
+        fromBaseComboBox.getSelectionModel().selectFirst();
+
+        Label toBaseLabel = new Label("目标进制：");
+        toBaseComboBox = new ComboBox<>(FXCollections.observableArrayList("2", "8", "10", "16"));
+        toBaseComboBox.getSelectionModel().selectFirst();
+
+        convertButton = new Button("转换");
+        convertButton.setOnAction(event -> {
+            convert();
+        });
+
+        Label outputLabel = new Label("转换结果：");
+        outputField = new TextField();
+        outputField.setEditable(false);
+
+        VBox layout = new VBox(10);
+        layout.setPadding(new Insets(10));
+        layout.getChildren().addAll(inputLabel, inputField, fromBaseLabel, fromBaseComboBox, toBaseLabel, toBaseComboBox, convertButton, outputLabel, outputField);
+
+        Scene scene = new Scene(layout, 300, 250);
+        primaryStage.setScene(scene);
+        primaryStage.show();
+    }
+
+    private void convert() {
+        String inputValue = inputField.getText();
+        int fromBase = Integer.parseInt(fromBaseComboBox.getValue());
+        int toBase = Integer.parseInt(toBaseComboBox.getValue());
+
+        int decimalValue = convertToDecimal(inputValue, fromBase);
+        String result = convertFromDecimal(decimalValue, toBase);
+
+        outputField.setText(result);
+    }
+
+    private int convertToDecimal(String value, int base) {
+        int decimalValue = 0;
+        int power = 0;
+        for (int i = value.length() - 1; i >= 0; i--) {
+            char digit = value.charAt(i);
+            int digitValue;
+            if (digit >= '0' && digit <= '9') {
+                digitValue = digit - '0';
+            } else if (digit >= 'A' && digit <= 'F') {
+                digitValue = digit - 'A' + 10;
+            } else {
+                return 0;
+            }
+            decimalValue += digitValue * Math.pow(base, power);
+            power++;
+        }
+        return decimalValue;
+    }
+
+    private String convertFromDecimal(int decimalValue, int base) {
+        if (decimalValue == 0) {
+            return "0";
+        }
+        StringBuilder result = new StringBuilder();
+        while (decimalValue > 0) {
+            int remainder = decimalValue % base;
+            char digit;
+            if (remainder < 10) {
+                digit = (char) ('0' + remainder);
+            } else {
+                digit = (char) ('A' + remainder - 10);
+            }
+            result.insert(0, digit);
+            decimalValue /= base;
+        }
+        return result.toString();
+    }
+
+    public static void main(String[] args) {
+        launch(args);
+    }
+}