Can you post your entire code so we can trace it?

No I can't input a new value for choice because the statements after the do-while loop directly executes.

do{ 
     ...       
}while(choice == 'y' || choice == 'Y');
System.out.println("\nFREQUENCY:\nHeads: " + heads + "\nTails: " + tails); //this part directly executes without letting me input another value for choice.

So basically, after just inputting 'y' once, I get the following output:

TOSS COIN? Press y for yes.y
TAIL
TOSS COIN? Press y for yes.
FREQUENCY:
Heads: 0
Tails: 1

It doesn't display a compile-time error. But for instance, if the user types in y, the first loop would execute and then since the value of choice is still 'y', it's supposed to loop again. But instead, it just displays "TOSS COIN? Press y for yes." without asking for a new value of choice.

Value of y after first loop is still while so the loop should continue but it's not.

I mean to say, calue of choice is still while after first loop. so it's supposed to continue looping.

*value of choice is still y after first loop so it should continue looping

The problem is that this part of the code doesn't loop the way it's supposed to.

do{
            System.out.print("TOSS COIN? Press y for yes.");
            choice = (char)System.in.read();
            if(choice == 'y' || choice == 'Y')
            {
                Coins c = Coins.flip();
                System.out.println(c);
                if(c == Coins.HEAD)
                    heads++;
                else
                    tails++;
            }
        }while(choice == 'y' || choice == 'Y');