Java Collection - 如何使用store()方法保存属性

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Properties;

public class MainClass {
  public static void main(String args[]) throws Exception {
    Properties p = new Properties();
    p.load(new FileInputStream("test.txt"));

    p.store(new FileOutputStream("t.txt"),"no comments");
  }
}