Hi I am trying to find a regEx which only accepts lower case letters nothing else,
I tired few options nothing worked, Can some one please guide me :
here are the expressions I tried :
(?=.*[a-z])--> this is not working if we have "aaaAA"
[a-z]+^[A-Z]
^[A-Z]+[a-z]+^[A-Z]
Please help me.
Did you try just [az]+
See example here: https://regex101.com/r/wCdBue/1
If you want to check if whole line / text contains only lowercase letter you should wrap your regex with ^$ like this: ^[az]+$
Example: https://regex101.com/r/T0DHY4/1
Your solution is nearly correct. The regex must say "[az]+"—include a quantifier, which means that you are not matching a single character, but one or more lowercase characters.
String regex = "[az]+";
Here is a quantifier regex link. http://docs.oracle.com/javase/tutorial/essential/regex/quant.html
It's working for me like this:
String line = "aaaA";
System.out.println(line.matches("^[a-z]+$")); //false
line = "aaaa";
System.out.println(line.matches("^[a-z]+$")); //true
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