import java.util.*;

public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    String A=sc.next();
    String B=sc.next();

    int a1=A.length();//length of A
    int b1=B.length();//length of B
    System.out.println(a1+b1);//Adding length of a1 &b1
    if(A.compareTo(B)>0){
        System.out.println("Yes");//Lexicographical comparision 

    }
    else{
        System.out.println("No");
    }
    String A1=A.substring(0,1).toUpperCase()+A.substring(1);//switching case
    String B1=B.substring(0,1).toUpperCase()+B.substring(1);
    System.out.println(A1+" "+B1);




}

}

Great exercise for mastering Java String fundamentals! It touches the three pillars of string handling: length measurement, comparison logic, and transformation. Lords Exchange Registration

For Java15 Platform

I wrote the code from scratch just to get more practice

import java.util.Scanner;

class Solution
{
    public static void main(String args[])
    {
        Scanner sc = new Scanner(System.in);
        String A = sc.next();
        String B = sc.next();
        sc.close();
        
        int na = A.length();
        int nb = B.length();
        int cmp = A.compareTo(B);
        String cA = A.substring(0, 1).toUpperCase() + A.substring(1);
        String cB = B.substring(0, 1).toUpperCase() + B.substring(1);
        
        System.out.println(na + nb);
        
        if(cmp > 0)
            System.out.println("Yes");
        else
            System.out.println("No");
        
        System.out.println(cA + " " + cB);
    }
}

import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String A = sc.next();
    String B = sc.next();

    int sumOfStringLength = A.length() + B.length();
    System.out.println(sumOfStringLength);

    if(A.compareTo(B) > 0){
        System.out.println("Yes");
    }else{
        System.out.println("No");
    }

    String A1 = A.substring(0, 1).toUpperCase() + A.substring(1);
    String A2 = B.substring(0, 1).toUpperCase() + B.substring(1);

    System.out.println(A1 + " " + A2);
}

}

import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String str1 = scan.nextLine();
    String str2 = scan.nextLine();

    System.out.println(str1.length()+str2.length());
    String res = str1.compareTo(str2)>0?"Yes":"No";
    System.out.println(res);

    str1=Character.toUpperCase(str1.charAt(0))+str1.substring(1);
    System.out.print(str1+" ");
    str2=Character.toUpperCase(str2.charAt(0))+str2.substring(1);
    System.out.print(str2);
}

}