Java question.

Create a class called ParsingUtils. Add a static method:

public static void changeLetter(StringBuilder sb, char letter)

Convert all occurrences of the letter variable in the StringBuilder to upper case.

Given:

import java.util.Scanner; public class CaseDemo { public static void main(String[] args) { Scanner keyboard = new Scanner(System.in); System.out.println("Enter a String"); StringBuilder sb = new StringBuilder(keyboard.nextLine()); System.out.println("Which character should be converted to uppercase?"); char c = keyboard.nextLine().charAt(0); ParsingUtils.changeLetter(sb, c); System.out.println(sb); } } 

Standard Input
aaa a

Required Output

Enter a String Which character should be converted to uppercase? AAA