Java: regular expressions

The Java Tutorials: Essential Classes > Regular Expressions > Quantifiers

Greedy Meaning
X? X, once or not at all
X* X, zero or more times
X+ X, one or more times
X{n} X, exactly n times

Need to memorize these.

Java: formatters

I'll need to revisit this topic as I only have superficial comprehension of Java Formatters like NumberFormat.

Currency objects are distinct from locales because a particular locale may use multiple currencies.