Split words and capitalize first character

I'm getting user input that I need to format. I need to remove all leading/trailing spaces and I need to capitalize the first letter of each word.

Here is what I'm trying, however... if you input something with 2 spaces between words, it crashes. How might I solve this?

String formattedInput = ""开发者_如何学编程;
String inputLineArray[] = inputLine.getText().toString().trim().split("\\s");
for (int d=0; d<inputLineArray.length; d++) {
    formattedInput = formattedInput.trim() + " " +   
            inputLineArray[d].trim().substring(0,1).toUpperCase() +
            inputLineArray[d].trim().substring(1).toLowerCase();
}

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Your code is blowing up on multiple spaces because when you split you're getting a member in your array that is an empty string "hello there" when split becomes array[0] = "hello", array[1] = "", array[2] = "there".

So when you do substring(0,1) you should get an IndexOutOfBoundsException.

Try changing your split("\\s") to split("\\s+") this way your multiple spaces get picked up in the regex and thrown out.

Edit:

This also will let you get rid of the .trim() inside your loop since all of the spaces will be taken care of by the split.

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tokenize the string and split by space " " and then take each iteration and capitalize it and then put it back together again

read all about string tokenization here