Trying a String exercise in JAva

[camel-man]

I am trying to capitalize the first letter of every word in a sentence.
Example. "hey what's up" would be "Hey What's Up".

here is my code but nothing is changing the sentence. I thought everything was right.

	public static String cap(String aString) {

		String[] sentence = aString.split(" ");
		String b = "";
		for (int i = 0; i < sentence.length; i++) {
			Character.toUpperCase(sentence[i].charAt(0));
			b += sentence[i] + " ";
		}

		return b;

	}

 

[AlephZero]

The toUpperCase method doesn't change the parameter you pass to it. It returns the converted character.

So you want to do something like

b += Character.toUpperCase(sentence[i].charAt(0));

and then append the rest of the "word" to b.

 

[camel-man]

Thank you for the tip. So does this suffice? How bad is it and are there easier ways to accomplish this?

public static String cap(String aString) {

		String[] sentence = aString.split(" ");
		String b = "";
		for (int i = 0; i < sentence.length; i++) {
			char temp = Character.toUpperCase(sentence[i].charAt(0));
			b += temp;
			for(int j = 1; j<sentence[i].length(); j++)
				b += sentence[i].charAt(j);
			
			b += " ";
		}

		return b;

	}