java - 如何修复不兼容的类型错误

Question

我有两个 printf，它们是分开的，因为其中一个正在循环，我在对齐其中一个 printf 时遇到问题。我希望它能排在 friend 下面。

什么是打印

Member                     Friends             
Chi Cho                 Joe Blow
                 Jimmy Brown
Status: 

Joe Blow                 John Ko
Status: Coding like a friend

Tammy Joe                 Joe Johnson
Status: this is great

Bing Smith                 John Brown
Status: This sucks

我想要得到什么

Member                     Friends             
Chi Cho                    Joe Blow
                           Jimmy Brown
Status: 

Joe Blow                   John Ko
Status: Coding like a friend

Tammy Joe                  Joe Johnson
Status: this is great

Bing Smith                 John Brown
Status: This sucks

<小时/>

    for (int i = 0 ; i< profiles; i++)
    {
    String arrayName = face.get(i).getName();       
    String statusName = face.get(i).getStatus();

    LinkedList<String> linkName = face.get(i).getFriend();
    String realname ="";
   System.out.printf("%-20s", arrayName);

   for (String toname : linkName) {
        System.out.printf("%-20s", toname);
        System.out.println();

错误所在

<小时/>

if (toname != linkName.size() - 1) {
            System.out.printf("%-20s", "");
            }
    }

<小时/>

    System.out.println("Status: " + statusName);
    System.out.println();
    }
}

Answer 1

它在列表中称为 size() :) check here