TitleCase.java

import java.util.Scanner;

public class TitleCase {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        System.out.print("Enter a string: ");
        String input = scan.nextLine();
        System.out.println(capitalizeEachString(input));
    }

    public static String capitalizeEachString(String str) {
        if (str == null || str.length() == 0) {
            return "";
        }
        if (str.length() == 1) {
            return str.toUpperCase();
        }
        String[] words = str.split(" ");
        StringBuilder newWord = new StringBuilder(str.length());

        for (String word : words) {
            if (word.length() > 1) {
                newWord.append(word.substring(0,1).toUpperCase());
                newWord.append(word.substring(1));
            } else {
                newWord.append(word.toUpperCase());
            }
            newWord.append(" ");
        }
        return newWord.toString().trim();
    }
}