scala> "rosetta".

!=                    ##                    $asInstanceOf
$isInstanceOf         +                     ==
charAt                clone                 codePointAt
codePointBefore       codePointCount        compareTo
compareToIgnoreCase   concat                contains
contentEquals         endsWith              eq
equals                equalsIgnoreCase      finalize
getBytes              getChars              getClass
hashCode              indexOf               intern
isEmpty               lastIndexOf           length
matches               ne                    notify
notifyAll             offsetByCodePoints    regionMatches
replace               replaceAll            replaceFirst
split                 startsWith            subSequence
substring             synchronized          this
toCharArray           toLowerCase           toString
toUpperCase           trim                  wait

scala> "rosetta".+(":")
res1: java.lang.String = rosetta: