how to check all character in a string is lowercase using java

Question

I tried like this but it outputs false,Please help me ``` String inputString1 = "dfgh";// but not dFgH String regex = "[a-z]"; boolean result; Pattern pattern1 = Pattern.compile(regex); Matcher matcher1 = pattern1.matcher(inputString1); result = matcher1.matches(); System.out.println(result); ```

Accepted Answer

Your solution is nearly correct. The regex must say `"[a-z]+"`—include a quantifier, which means that you are not matching a single character, but one or more lowercase characters. Note that the uber-correct solution, which matches any lowercase char in Unicode, and not only those from the English alphabet, is this:

```
"\p{javaLowerCase}+"
```

Additionally note that you can achieve this with much less code:

```
System.out.println(input.matches("\p{javaLowerCase}*"));
```

(here I am alternatively using the * quantifier, which means zero or more. Choose according to the desired semantics.)

how to check all character in a string is lowercase using java

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