仅在首页上发布文本文件的抓取信息

Question

我不知道如何编写此循环以获取代码信息

public static int firstPage(String keyword) {
    while (keyword != null) {

    }
}

其他相关代码是：

public class KeywordIndex {
public class Keyword {
    String keyword;
    ArrayList < Integer > pages;
    public Keyword(String word, int pageNumber) {
        this.keyword = word;
        this.pages = new ArrayList < Integer > ();
        this.pages.add(pageNumber);
    }
    public void addpageNumber(int pageNumber) {
        this.pages.add(pageNumber);
    }
}

public static void main(String[] args) throws Exception {
    ArrayList < Keyword > myWordList = new ArrayList < Keyword > (); //read line by line
    FileReader file = new FileReader("‎⁨⁨Desktop⁩/⁨Homework⁩/COMP 251⁩/Assignments/⁩⁩SampleInput.txt");
    BufferedReader br = new BufferedReader(file);
    String line = br.readLine();
    while (line != null) {
        line = br.readLine();
    }
}
}