How to count the number of occurrences of a char in a String?

My 'idiomatic one-liner' for this is:

int count =StringUtils.countMatches("a.b.c.d",".");

Why write it yourself when it's already in commons lang?

Spring Framework's oneliner for this is:

int occurance =StringUtils.countOccurrencesOf("a.b.c.d",".");