How can I correct this ?

Question

import java.util.Scanner;
public class Char {
​public static void main (String args[]){
​​int i,choice;
​​char digit1,digit2;
do{
​​Scanner scan=new Scanner(System.in);
​​System.out.print("Input a value: ");
​​digit1=scan.next().charAt(0);
​​System.out.print("Input another value: ");
​​digit2=scan.next().charAt(0);
​​
​​​
​​​System.out.print("The letter/s between " +digit1 +" and " +digit2 +" is " );
​​​digit1++;
​​​ for(char ch=digit1;ch<digit2;++ch)
​​​ {
​​​​ System.out.print(ch);
​​​ }
​​​
​​​System.out.print("\n Another[y/n]: ");
​​​choice=scan.next().charAt(0);
​​​
}
​​​while(choice=='y');
​​​
Scanner scan=new Scanner(System.in);
​​​
​​int ascii=(int) digit2;
​​
​​if(digit2>=48 && digit2>=58 )
​​{
​​​System.out.println("Invalid Input! Please enter the same type of value");
​​}
​​
​​System.out.print("The number/s between " +digit1 +" and " +digit2 +" is " );
​​for(i=digit1+1;i<digit2;i++)
​​{​
​​​​System.out.print(i-'0');​
​​​}
​​
​​System.out.print("\n Another[y/n]: ");
​​choice=scan.next().charAt(0);
​​
​​while(choice=='y');
​​
​​

​
}

​ }

Answer 1

there are ilegal chars ​​\u2039. In sololearn replace every pink spaces with normal spaces.

second part of code needs rewrite, at the end you ask for y/n but there is no loop after.
Because you have not do{ } there, while() after can end in infinity loop if answer is y (for yes)

you can avoid it with comment this (about line 42)
//while (choice == 'y');