“Char can not dereferenced”错误 [英] "Char cannot be dereferenced" error

问题描述

我想使用char方法 isLetter（），它应该返回对应于字符是否为字母的布尔值。但是当我调用该方法时，我得到一个错误，指出char不能被dereferenced。我不知道解除引用char或如何解决错误的意思。该语句是：

I'm trying to use the char method isLetter(), which is supposed to return boolean value corresponding to whether the character is a letter. But when I call the method, I get an error stating that "char cannot be dereferenced." I don't know what it means to dereference a char or how to fix the error. the statement in question is:

if (ch.isLetter()) 
{
....
....
}

任何帮助？

推荐答案

类型char是一个原始类型 - 不是

The type char is a primitive -- not an object -- so it cannot be dereferenced

取消引用是访问引用引用的值的过程。由于char已经是一个值（不是引用），因此无法取消引用。

Dereferencing is the process of accessing the value referred to by a reference. Since a char is already a value (not a reference), it can not be dereferenced.

使用 Character ：

if(Character.isLetter(c)) {

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