Help with System.in.read() function

[Wunderbar]

Hi,
I'm writing a program with a do while loop..ending on the condition that the user doesn't enter 'c' or 'C' but after the second iteration, the program just ends after asking the user to enter c or C to continue. here's what I have:

import java.io.*;
import javax.swing.*;
import java.text.DecimalFormat;

public class CalculatingPI
{
public static void main ( String args[] ) throws IOException
{
int numberOfTerms, counter;
float denominator;
double calculation;
String inputValues;
char aLetter;

do {

counter =1;
calculation = 0;
denominator = 0;


inputValues = JOptionPane.showInputDialog(
"Please enter the number of terms to be calculated: " );
numberOfTerms = Integer.parseInt( inputValues );

System.out.println(numberOfTerms);
System.out.print ("Enter C to continue, any other key to end: "
aLetter = (char)System.in.read();
}while (( aLetter == 'c') || (aLetter == 'C'));
System.exit(0); //terminate the program
} [sig][/sig]

 

[jnicho02]

The [tt]System.in.read()[/tt] command gets the entire input which will be a 'c' character and a 'return' character. Therefore, the next time round the loop it applies 'return' as your input and quits.

To prove this try entering 'ccc' for continue and it will works for three loops.

Right after [tt]aLetter = (char)System.in.read();[/tt] you could skip the input chars with...

System.in.skip(System.in.available());
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