What's the difference between Character.toUpperCase() and Character.toTitleCase()

Question

I was refactoring some of my old code and then I found out that I\'d used Character.toTitleCase() method at some point and couldn\'t help myself wondering if

Answer 1

Standard ASCII characters are so boring! Here's something more exciting:

System.out.println(Character.toTitleCase('dz'));  // Dz
System.out.println(Character.toUpperCase('dz'));  // DZ

Live demo.