我想读取一个文件的内容，并将文件的每一行存储到一个自定义的ArrayList中。文件的内容如下所示：
这是我目前所做的：

public static ArrayList<st> myArray = new ArrayList<st>();
public static st s = new st();

s.id=lineScan.next();
s.name=lineScan.next();
s.gender=lineScan.next();
s.age=lineScan.nextInt();
myArray.add(s);

class st {
    String id;
    String name; 
    String gender; 
    int age; 
}

我想获取www.example.com字符串，每次性别是男性时，把它们一起打印出来，对女性也是如此，但我不知道如何从数组列表中获取某些字符串.s.name string for every time the gender is male and print them out together, and do the same with the female gender, but I don't know how to get certain strings from the array list.