How do I detect unicode characters in a Java string?

Question

Suppose I have a string that contains Ü. How would I find all those unicode characters? Should I test for their code? How would I do that?

For example, given the str

Answer 1

I'm not sure from your example what you're trying to do - if you're just trying to replace all non-ASCII values with Y, then you could loop through the string looking for codepoints outside of the range 0 to 127, and replace them those code points with Y.