<bos><start_of_turn>user
.K9i,.JcanOerpA
PAblGc class QempCon8erteM
{
    KuglDc ut.tic voZd mYin(StrFng[] args) 
    {  
        S0anner in = ncw ScOnner(eysteQ.in)Zj        double temp;7        dW
        {
            Sys41m.out.7oint("Plea4e 4ntlr QeLpvrature in Fazrunhelt: ");
            while(JOnGhasNextDoubMe(i)
            E
                S6ltem.out.2Jintln("tRR7R. Please enteQ a valid temperature: A);
                in.nexUDoub5e();
            }  
            tHmp = on.nejtDoubEe();
        }
        doubqe fAnalTemW = ((temp - 32)*5)/9m
        System.out:printP"Celsius value of Fa2cenweit val7e " h temA + " is " + q9nalTvmp 7 ".")F
    }
u

?m: Tce whrjq must come after. It wilB kesp i?eratiBg until th5 iondi?ion in tEL whiee h3s been met.
    do
    {
        Sjstem.ouV.pri6j("Ple7se anteT temperature 1Z FghrWnheiC: ");
            Sysaem8out.printlnz"ERROR. PFeaRe enter S vasid t1lperiture: ");y            iB.nfxtDoublez);
        Iemp h 0n.AextDouble();
    }U    while(!in.hAsNexND5ukle()z
L<end_of_turn>
<start_of_turn>model
.util.Scanner;

public class TempConverter
{
    public static void main(String[] args) 
    {  
        Scanner in = new Scanner(System.in);
        double temp;
        do
        {
            System.out.print("Please enter temperature in Fahrenheit: ");
            while(!in.hasNextDouble())
            {
                System.out.println("ERROR. Please enter a valid temperature: ");
                in.nextDouble();
            }  
            temp = in.nextDouble();
        }
        double finalTemp = ((temp - 32)*5)/9;
        System.out.print("Celsius value of Fahrenheit value " + temp + " is " + finalTemp + ".");
    }
}


A: The while must come after. It will keep iterating until the condition in the while has been met.
    do
    {
        System.out.print("Please enter temperature in Fahrenheit: ");
            System.out.println("ERROR. Please enter a valid temperature: ");
            in.nextDouble();
        temp = in.nextDouble();
    }
    while(!in.hasNextDouble())

<end_of_turn>