Capitalise first letter in String [duplicate]

Question

I'm having trouble converting the first letter to Capital in a String:

rackingSystem.toLowerCase(); // has capitals in every word, so first convert all to lower case StringBuilder rackingSystemSb = new StringBuilder(); rackingSystemSb.append(rackingSystem); rackingSystemSb.setCharAt(0, Character.toUpperCase(rackingSystemSb.charAt(0)));  rackingSystem = rackingSystemSb.toString(); 

This doesn't seem to work..

Any suggestions?

Answer 1

Try doing:

rackingSystem = rackingSystem.toLowerCase(); 

Instead of:

rackingSystem.toLowerCase();  

Strings are immutable, you must reassign the result of toLowerCase().

Easier though, (as long as your String is larger than length 2):

rackingSystem = rackingSystem.substring(0,1).toUpperCase() + rackingSystem.substring(1).toLowerCase();