java：GUI实现通讯录增删改查源码

以下是一个简单的 JavaFX 实现通讯录增删改查的示例代码，包括用户界面和逻辑代码。代码中使用一个 ArrayList 存储联系人信息。你可以根据自己的需要进行修改和扩展。

import java.util.ArrayList;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class AddressBook extends Application {

    private ArrayList<Contact> contacts = new ArrayList<>();
    private ObservableList<String> contactNames = FXCollections.observableArrayList();

    private ListView<String> listView;
    private Label nameLabel;
    private Label phoneLabel;
    private Label emailLabel;
    private TextField nameField;
    private TextField phoneField;
    private TextField emailField;
    private Button addButton;
    private Button deleteButton;
    private Button updateButton;

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Address Book");

        // Initialize contacts
        contacts.add(new Contact("John Doe", "555-1234", "johndoe@example.com"));
        contacts.add(new Contact("Jane Smith", "555-5678", "janesmith@example.com"));

        // Initialize user interface
        listView = new ListView<>(contactNames);
        nameLabel = new Label("Name:");
        phoneLabel = new Label("Phone:");
        emailLabel = new Label("Email:");
        nameField = new TextField();
        phoneField = new TextField();
        emailField = new TextField();
        addButton = new Button("Add");
        deleteButton = new Button("Delete");
        updateButton = new Button("Update");

        // Add event handlers
        listView.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
            if (newValue != null) {
                Contact contact = contacts.get(listView.getSelectionModel().getSelectedIndex());
                nameField.setText(contact.getName());
                phoneField.setText(contact.getPhone());
                emailField.setText(contact.getEmail());
            }
        });

        addButton.setOnAction(event -> {
            Contact contact = new Contact(nameField.getText(), phoneField.getText(), emailField.getText());
            contacts.add(contact);
            contactNames.add(contact.getName());
            clearFields();
        });

        deleteButton.setOnAction(event -> {
            int index = listView.getSelectionModel().getSelectedIndex();
            if (index >= 0) {
                contacts.remove(index);
                contactNames.remove(index);
                clearFields();
            }
        });

        updateButton.setOnAction(event -> {
            int index = listView.getSelectionModel().getSelectedIndex();
            if (index >= 0) {
                Contact contact = new Contact(nameField.getText(), phoneField.getText(), emailField.getText());
                contacts.set(index, contact);
                contactNames.set(index, contact.getName());
            }
        });

        // Set up user interface layout
        GridPane formPane = new GridPane();
        formPane.setHgap(10);
        formPane.setVgap(10);
        formPane.setPadding(new Insets(10));
        formPane.add(nameLabel, 0, 0);
        formPane.add(nameField, 1, 0);
        formPane.add(phoneLabel, 0, 1);
        formPane.add(phoneField, 1, 1);
        formPane.add(emailLabel, 0, 2);
        formPane.add(emailField, 1, 2);

        VBox buttonBox = new VBox(10, addButton, deleteButton, updateButton);
        HBox mainPane = new HBox(10, listView, formPane, buttonBox);
        mainPane.setPadding(new Insets(10));

        // Initialize user interface state
        listView.getSelectionModel().selectFirst();
        Contact contact = contacts.get(listView.getSelectionModel().getSelectedIndex());
        nameField.setText(contact.getName());
        phoneField.setText(contact.getPhone());
        emailField.setText(contact.getEmail());

        // Show the user interface
        Scene scene = new Scene(mainPane, 600, 400);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    private void clearFields() {
        nameField.clear();
        phoneField.clear();
        emailField.clear();
    }

    private static class Contact {
        private String name;
        private String phone;
        private String email;

        public Contact(String name, String phone, String email) {
            this.name = name;
            this.phone = phone;
            this.email = email;
        }

        public String getName() {
            return name;
        }

        public String getPhone() {
            return phone;
        }

        public String getEmail() {
            return email;
        }
    }

    public static void main(String[] args) {
        launch(args);
    }
}

这段代码中，我们使用了 JavaFX 框架来实现用户界面，包括一个 ListView 显示联系人列表，一个 GridPane 显示联系人信息，以及三个 Button 分别实现增加、删除和修改功能。我们使用了一个 ArrayList 存储联系人信息，以及一个 ObservableList 来实现 ListView 显示。

当用户在 ListView 中选择某个联系人时，我们会更新 GridPane 中的文本框，以显示该联系人的详细信息。当用户点击 Add、Delete 或 Update 按钮时，我们会更新 ArrayList 和 ObservableList，并清空 GridPane 中的文本框。

这个示例代码只是一个简单的实现，你可以根据自己的需要进行修改和扩展，比如添加搜索功能、保存和读取联系人信息等。