利用Java编写web浏览器，给出具体代码，需要具备访问链接，另存为，退出，后退，前进，全屏，查看源代码，刷新功能

以下是一个简单的JavaFX实现的Web浏览器的代码，包括访问链接、另存为、退出、后退、前进、全屏、查看源代码、刷新功能。请注意，这只是一个简单的示例代码，实际的Web浏览器需要更复杂的功能和更完善的处理逻辑。

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.FileChooser;
import javafx.stage.Stage;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Stack;

public class JavaFXBrowser extends Application {

    private WebView webView;
    private WebEngine webEngine;
    private TextField addressBar;
    private Button backButton;
    private Button forwardButton;
    private Button refreshButton;
    private Button sourceButton;
    private Button fullScreenButton;
    private Button saveButton;
    private Button exitButton;
    private Stage stage;
    private Stack<String> history = new Stack<String>();

    @Override
    public void start(Stage primaryStage) {
        stage = primaryStage;

        // 创建地址栏和按钮
        addressBar = new TextField("https://www.google.com");
        backButton = new Button("Back");
        forwardButton = new Button("Forward");
        refreshButton = new Button("Refresh");
        sourceButton = new Button("View Source");
        fullScreenButton = new Button("Full Screen");
        saveButton = new Button("Save As");
        exitButton = new Button("Exit");

        // 为按钮添加事件处理器
        backButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                back();
            }
        });
        forwardButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                forward();
            }
        });
        refreshButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                refresh();
            }
        });
        sourceButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                viewSource();
            }
        });
        fullScreenButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                fullScreen();
            }
        });
        saveButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                saveAs();
            }
        });
        exitButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                exit();
            }
        });

        // 创建工具栏
        HBox toolBar = new HBox();
        toolBar.setSpacing(10);
        toolBar.setAlignment(Pos.CENTER);
        toolBar.getChildren().addAll(backButton, forwardButton, refreshButton, sourceButton, fullScreenButton, saveButton, exitButton);

        // 创建地址栏和WebView
        VBox topBox = new VBox();
        topBox.getChildren().addAll(addressBar, toolBar);
        webView = new WebView();
        webEngine = webView.getEngine();
        webEngine.load(addressBar.getText());
        history.push(addressBar.getText());

        // 创建主界面
        BorderPane root = new BorderPane();
        root.setTop(topBox);
        root.setCenter(webView);

        // 创建场景
        Scene scene = new Scene(root, 800, 600);

        // 设置窗口标题
        primaryStage.setTitle("JavaFX Browser");

        // 显示窗口
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    // 后退
    private void back() {
        if (history.size() > 1) {
            history.pop();
            String url = history.pop();
            webEngine.load(url);
            addressBar.setText(url);
        }
    }

    // 前进
    private void forward() {
        if (!history.isEmpty()) {
            String url = history.pop();
            webEngine.load(url);
            addressBar.setText(url);
        }
    }

    // 刷新
    private void refresh() {
        webEngine.reload();
    }

    // 查看源代码
    private void viewSource() {
        String source = webEngine.executeScript("document.documentElement.outerHTML").toString();
        TextArea sourceArea = new TextArea(source);
        sourceArea.setEditable(false);
        Stage sourceStage = new Stage();
        sourceStage.setTitle("View Source");
        sourceStage.setScene(new Scene(sourceArea, 800, 600));
        sourceStage.show();
    }

    // 全屏
    private void fullScreen() {
        stage.setFullScreen(!stage.isFullScreen());
    }

    // 另存为
    private void saveAs() {
        FileChooser fileChooser = new FileChooser();
        fileChooser.setTitle("Save As");
        fileChooser.setInitialFileName("index.html");
        File file = fileChooser.showSaveDialog(stage);
        if (file != null) {
            try {
                BufferedWriter writer = new BufferedWriter(new FileWriter(file));
                writer.write(webEngine.getDocument().toString());
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    // 退出
    private void exit() {
        System.exit(0);
    }

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

这段代码实现了一个简单的JavaFX Web浏览器，包括访问链接、另存为、退出、后退、前进、全屏、查看源代码、刷新等功能。在实际使用中，可以根据需要进行修改和扩展。