public static void main(String[] args) { String originData = ""; try { 此处补全代码 } catch (Exception e) { e.printStackTrace(); } }

这段代码中缺少获取数据的部分。你可以使用Java中的文件读取或者网络请求获取数据。以下是两个简单的示例代码：

1. 读取本地文件

public static void main(String[] args) {
    String originData = "";
    try {
        // 读取文件内容
        File file = new File("data.txt");
        BufferedReader reader = new BufferedReader(new FileReader(file));
        String line;
        while ((line = reader.readLine()) != null) {
            originData += line;
        }
        reader.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

2. 发送网络请求

public static void main(String[] args) {
    String originData = "";
    try {
        // 发送GET请求
        URL url = new URL("http://example.com/data");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");
        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line;
        while ((line = reader.readLine()) != null) {
            originData += line;
        }
        reader.close();
        connection.disconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
}