Separate small and capital letters from a string in Java

In this context, we will learn how to move all the capital letters to the end of a string in Java.

Separate small and capital letters from a string in Java

So if the user enters Let us Learn Java Output will be et us earn avaLLJ.

import java.util.*;
public class captialToEnd
 { 
  
    void fetchTheString(String inputstring) 
    {   
  int j;
        int lengthOfstring = inputstring.length(); 
        String alplower = ""; 
        String alpupper = ""; 
        char temp; 
        for (j = 0; j < lengthOfstring; j++) { 
            temp = inputstring.charAt(j);  
            if (temp >= 'A' && temp <= 'Z') { 
                 alpupper+= temp; 
            } 
            else { 
                alplower += temp; 
            } 
        } 
        System.out.println(alplower + alpupper); 
    } 
  
    public static void main(String args[]) 
    { 
        String inputstring;
  Scanner in=new Scanner(System.in);
  System.out.println("Enter the String:");
  inputstring=in.next();
  captialToEnd ce=new captialToEnd();
  ce.fetchTheString(inputstring);
 
    } 
}

output: