java - 如何将 HashSet<String> 保存到 .txt？

Question

我想将 HashSet 存储到服务器目录。 但我现在只能将其存储在 .bin 文件中。 但是如何将 HashSet 中的所有键打印到一个 .txt 文件中呢？

static Set<String> MapLocation = new HashSet<String>();

    try {
        SLAPI.save(MapLocation, "MapLocation.bin");
    } catch (Exception ex) {

    }

public static void save(Object obj, String path) throws Exception {
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(
            path));
    oos.writeObject(obj);
    oos.flush();
    oos.close();
}

Answer 1

// check IOException in method signature
BufferedWriter out = new BufferedWriter(new FileWriter(path));
Iterator it = MapLocation.iterator(); // why capital "M"?
while(it.hasNext()) {
    out.write(it.next());
    out.newLine();
}
out.close();