Java初学者:找不到符号

Question

我一直在搜索java教科书几个小时试图确定我做错了什么.我得到的错误是第13行的"找不到符号",这是代码行:

 System.out.println("The three initials are " + 
     getInitials(Harry, Joseph, Hacker));

说明在代码中注释.我很确定它与我设置的名字有关..但我不确定.

public class InitialsTest {
     /**
       Gets the initials of this name
      @params first, middle, and last names
      @return a string consisting of the first character of the first, middle,
  and last name
      */

    public static void main(String[] args) {
         System.out.println("The three initials are " + 
         getInitials(Harry, Joseph, Hacker));
    }

    public static String getInitials(String one, String two, String three) {
        String initials = one.substring(0,1) + two.substring(0,1) + three.substring(0,1);
        return initials;
    }

 }

Answer 1

System.out.println("The three initials are " 
    + getInitials("Harry", "Joseph", "Hacker")); //Enclosed within double quotes

这就是你传递String文字的方法.