java - 如何从 TreeSet 中读取内容并写入文件？

Question

我的代码是:

Set<String> s1=new TreeSet<String>();
   s1.add(name);
   s1.add(gender);
   s1.add(dob);

如何读取这些变量并将其写入文件？我应该使用 Buffered Reader 和 Buffered Writer 吗？？

Answer 1

试试下面的代码

public class SetWriter {

public static void main(String[] args) throws FileNotFoundException, IOException {
    String name = "Muhammad", gender = "male", dob = "8/feb/1992";
    Set<String> s1 = new TreeSet<>();
    s1.add(name);
    s1.add(gender);
    s1.add(dob);
    File f = new File("D:\\east.txt");
    f.createNewFile();
    FileWriter fw = new FileWriter(f);
    for (String s: s1) {
        fw.write(s+"\r\n");
    }
    fw.close();
}