用java写一个代码，用来获取网页的url

可以使用 Java 的 HttpURLConnection 类来获取网页的 URL。以下是一个简单的示例代码：

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

public class GetURL {
    public static void main(String[] args) {
        try {
            URL url = new URL("https://www.example.com");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                System.out.println(inputLine);
            }
            in.close();
        } catch (Exception e) {
            System.out.println("Error: " + e.getMessage());
        }
    }
}

这个代码会打印出 https://www.example.com 网页的内容。