Java中的Do-While循环无法停止

Question

我的文件正在编译时没有错误，但是，当用户输入＆＃34; no＆＃34;作为他们的答案，循环重复（而不是退出程序，我必须退出程序由于无限循环）。其他一切正常，我的新联系人被添加到名为＆＃34; contactList.csv＆＃34;的文件中。

我应该考虑使用不同的循环来获得参数吗？

 import java.util.*;
 import java.io.*;

class ContactList {

List<Contact> people = new ArrayList<Contact>();
Scanner input= new Scanner(System.in);
Contact contact;


public void addContact() throws IOException{
    Scanner input= new Scanner(System.in);

    String answer;

    ArrayList<String> people = new ArrayList<>();
    do{ 
        Contact one=new Contact();
        people.add((Arrays.toString(one.getEverything())));                  


        String FileName="contactList.csv";

        for(int i=0;i<people.size();i++){
            System.out.println(people.get(i));
            // added a new file in the loop to worite to 
        try {
            PrintWriter outfile=new PrintWriter(new FileWriter(FileName,true));
            outfile.println(people.get(i)+"\n");
            outfile.close();
        }   catch (FileNotFoundException ex) {

            }

        }

        System.out.println("Would you like to create another contact?");
        answer=input.next();
    }while(answer.equalsIgnoreCase("yes"));

}
//rest of the code...



}