"abcdefgh".replaceAll("[ae]", "=") "abcdefgh".replaceAll("[a-e]", "=") "abcdefgh".replaceAll("[^a-e]", "=") "abcdefgh".replaceAll("(b|d|f)", "=") "abcdefgh".replaceAll("a-ce-h", "=") "abcdefgh".replaceAll("\\p{XDigit}", "=") abc|def
"Abc".matches("(?i)[a-z]+") "ABC".replaceAll("(.)", "$1$1") "aaa".matches("a+")"aaa".matches("a?")"Joe Muster".replaceAll("(\\w+)\\s(\\w+)", "$2 $1") + * ?
\b $ ^
int i = i * 2;
([A-Z][aeoui][a-z][0-9]){2} | bos/code | Sep 02, 14:09 | 
| seminar/Befehle | Sep 02, 14:09 | 
| seminar/latex | Sep 02, 14:09 | 
| seminar/seminar | Sep 02, 14:09 | 
| atest/CleanCode | Sep 02, 14:09 | 
| atest/Datenstrukturen | Sep 02, 14:09 |