Trying to remove whitespace from a string

Question

Lets say I have the string "A man a plan a canal Panama"
How would I turn that into AmanaplanacanalPanama" ?
I've read a little about 'string buffer' but the teacher hasn't taught us how to use that yet (hasn't taught us much of anything). Is there any way to do this withough using a string buffer?
I'm making a palindrom tester, and I'm almost finished, but I can't seem to deal with these white spaces. Please help.

Answer 1

I'd do it using String's replaceAll method, to replace all occurences of space, or of one or more spaces, with the empty string "", but I don't know if you're supposed to use that or roll your own with brute force.
The brute force way would be to do something like this: Allocate a char array as big as the sentence.
for each char in the sentence (using String.charAt) {
    if it is not a space {
        add it to the array
        increment the number of non-space characters counter
Use whatever char array methods String has to build a new String from the
first N chars of the array, where N is the number of non-space chars.