Java字符串数组长度错误

Question

我是 Java 初学者，正在练习自己编写代码。我正在使用一本书来教我如何编码，并且我陷入了一个项目，其中包括创建字符串数组并确定其长度。这是我的示例工作。这是一个简单的婴儿名字建议程序。

public class BabyName {
    public static void main(String[] args) {
        String[] nameListOne = {"Alvin", "Elmer", "Angel", "Michael", "Tim", "Jude", "Gabriel", "Raphael", "John", "Smith", "Carl", "Mike"};
        String[] nameListTwo = {"", "Mark", "Posh", "Jake", "Cloud", "Star", "Ben", "Sam", "Kim", "Mark", "Simeon", "Louie", "Nat", "Matt", ""};

        int nameOneLength = nameListOne.Length;
        int nameTwoLength = nameListTwo.Length;

        int rand1 = (int) (Math.random() * nameOneLength);
        int rand2 = (int) (Math.random() * nameTwoLength);

        String babyname = nameListOne[rand1] + " " + nameListTwo[rand2];

        System.out.println("Your suggested baby name is " + babyname);
    }
}

当我尝试编译它时，我收到此错误:

BabyName.java:6: error: cannot find symbol
                int nameOneLength = nameListOne.Length;
                                               ^
  symbol:   variable Length
  location: variable nameListOne of type String[]
BabyName.java:7: error: cannot find symbol
                int nameTwoLength = nameListTwo.Length;
                                               ^
  symbol:   variable Length
  location: variable nameListTwo of type String[]
2 errors

我不知道我在这里做错了什么。我只是按照书上写的去做。

希望有人能帮忙。

Answer 1

nameListOne.length 长度应小写