我的搜索引擎如何连接到浏览器？

Question

我尝试制作自己的搜索引擎，但连接到谷歌或 雅虎，但我的搜索引擎不起作用。可以提出什么解决方案 用这个代码？它无法连接到浏览器。

import java.applet.Applet;
import java.net.*;
import java.awt.*;

public class search extends Applet {
    //private String viewerTitle="Google";

    TextField searchParameter;
    Choice    searchEngine;
    Button    searchButton;

    // initialize the display
    public void init() {

    setBackground(Color.white);
    searchParameter = new TextField(20);
    add(searchParameter);
    searchEngine = new Choice();

    searchEngine.addItem("Yahoo");
    searchEngine.addItem("Google");
    searchEngine.select(0);
    add(searchEngine);
    searchButton = new Button("Search");
    add(searchButton);
    setTitle("eBook reader");  
    setSize(600, 1000); 
    setVisible(true); 
    }

    private void setTitle(String string) {
        // TODO Auto-generated method stub

    }

    public boolean action(Event e, Object o) {
    if (e.target.equals(searchButton)) {
        try {
        sendSearch();
        }
        catch (Exception e1) {
        showStatus("Exception caught:" + e1.toString());
        }
    }
    return true;
    }

    @SuppressWarnings("deprecation")
    public void sendSearch() throws Exception {
    String searchString = searchParameter.getText();
    if (searchString.equals("")) {
        showStatus("Must enter a search string");
        return;
    }
    String url;
    switch (searchEngine.getSelectedIndex()) {

    case 1: url = "http://search.yahoo.com/bin/search?p=";
        break;

    case 2: url = "http://www.google.com/search?q=";
        break;      
    default: showStatus("Invalid search engine selected.");
        return;
    }

    // encode the search data
    url += URLEncoder.encode(searchString);

    // launch the search engine
    showStatus("Connecting to search location " + url);
    getAppletContext().showDocument(new URL(url), "_top");
    }
}