Java Program to get first letter of each word in String

Following method doesn't use inbuilt 'split' method and uses less additional space.

public class FirstLetterOfEachWord {
public static void main(String[] args) {
String input = "Good morning Everyone";
System.out.println(firstLetterOfEachWord(input));
}

private static String firstLetterOfEachWord(String input) {
StringBuilder sb = new StringBuilder();

char prevChar = ' ';

for (int i = 0; i < input.length(); i++) {
char currentChar = input.charAt(i);

if (prevChar == ' ') {
sb.append(currentChar);
}

prevChar = currentChar;
}

return sb.toString();
}
}

package com.string;

public class EachLetterString {

public static void main(String[] args) {

String str="mahendra shravan deore from nashik ";

String[] stringarray=str.split(" ");

for(String ss:stringarray) {
System.out.print(ss.charAt(0)+" ");
}
}

}

Sir if v want the last character in the each word to upper case what we need to do

Sir if v want the last character in capitalize what v shd do

Thank you so much <3

please sir can you please teach me freely

sir can you teach me freely

Thank you sir for explaining in a such a way that every one can understand