Java中无效的转义序列

Question

When I create this String :

private String chars = " `~1!2@3#4$5%6^7&8*9(0)-_=+qQwWeErRtTyYuUiIoOpP[{]}\|aAsSdDfFgGhHjJkKlL;:'"zZxXcCvVbBnNmM,<.>/?";

Eclipse tells me: "Invalid escape sequence (valid ones are \\b \\t \\n \\f \\r \\" \\' \\ )"

How do I fix this?

Answer 1

The \\ is an escape character. You're basically escaping | which doesn't need to be escaped at all. If you want to represent an \\ in String, then you need to let it escape itself.

private String chars = " `~1!2@3#4$5%6^7&8*9(0)-_=+qQwWeErRtTyYuUiIoOpP[{]}\\|aAsSdDfFgGhHjJkKlL;:'\"zZxXcCvVbBnNmM,<.>/?";

Please note that the " does need to be escaped, otherwise the string value ends too early and the code still won't compile due to all the odd characters thereafter.