er may I enquire how do i use character.isDigit in this place then??

hi I know that I have asked pretty much question recently.. I'm learning java myself and hence kinda can't really understand

the isDigit method..
error is cannot resolve symbol method...

hey ya I tried like
String updating = "blue" <=== maybe orange or black etc..
char newString = (updating.substring(0,1)).toUpperCase().charAt(0);
...

let's say I have String b = blue
after I used
String newString = (blue.substring(0,1)).toUpperCase();
the new variable is only the "B"
what steps do i actually have to do to find the other words...

hi I have some problem..

for instance i have a String s= blue
it maybe another string of yellow red whatever

how do i convert that b to B

i only read about s.charAt(0) to get the first...