deleting characters from a String

[Hayzam]

if i have String S which contains a mix of numbers , spaces , lower case and higher case characters ...

how can i delete the numbers and higher case characters , leaving spaces and lower case chars . ?!

[roots]

str = str.replaceAll("[A-Z]", "").replaceAll("[0-9]", "");

[Hayzam]

thanks alot , but what about the special characters like ; : / { } ....etc

how can i delete them ?

[ProjectKaiser]

str = str.replaceAll("[0-9A-Z;:/{}]", "");

[ProjectKaiser]

See Pattern class documentation for regular expression syntax