Updating first letter of all words of a String

 import java.util.*;

public class FirstLetterToUpperCase{

public static void main(String args []){

Scanner sc = new Scanner(System.in);

System.out.println("Enter the sentence");

String str = sc.nextLine();

String upperCaseString = "";

Scanner lineScan = new Scanner(str); //constructor created because hasNext fun doesnt work with str

while(lineScan.hasNext()){

String word = lineScan.next();

upperCaseString += Character.toUpperCase(word.charAt(0)) + word.substring(1) + " ";

}

System.out.println(upperCaseString.trim()); //trim will remove space from beginning and ending

}

}