是的，可以通过使用HttpURLConnection和BufferedReader来实现从URL获取Html源代码的操作。以下是一个示例代码：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class HtmlSourceGetter {
    public static String getHtml(String urlStr) throws IOException {
        URL url = new URL(urlStr);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        
        InputStream is = conn.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
        
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        
        reader.close();
        conn.disconnect();
        return sb.toString();
    }
}

在调用getHtml(String urlStr)方法时，传入要获取Html源代码的URL即可。可以将此方法封装在AsyncTask中，以便在后台执行时避免主线程被阻塞。