java - 字符串包含除一个字符以外的任何字符

Answer 1

You need regex (well technically you don't need regex, but it's the best way):

if (aString.matches(".*(?<!\\\\)}.*"))

This regex says the string should be made up as follows

• .* zero or more of any character
• (?<!\\\\) the previous char is not a backslash
• } a curly right bracket
• .* zero or more of any character

This also works for the edge case of the first char being the curly bracket.

See live demo.