Question

Write a program that will take a line of input and go through and print out that line again with all the uppercase letters swapped with the lowercase letters. JAVA

Answer 1

import java.util.Scanner;

public class SwapCase {
    public static String swapCase(String s){
        String result = "";
        for(char ch: s.toCharArray()){
            if(ch>='a' && ch<='z'){
                result += (char)(ch - 32);
            }
            else if(ch>='A' && ch<='Z'){
                result += (char)(ch + 32);
            }
            else{
                result += ch;
            }
        }
        return result;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a string: ");
        String s = scanner.nextLine();
        System.out.println("The new string is: "+swapCase(s));
    }
}