import javax.swing.JOptionPane;
import java.io.*;

public class WhileExample
{
       public static void main ( String args[])
       {       
		int age;
		String ageString;

		final int MIN_AGE = 0;
		final int MAX_AGE = 100;

		do
		{
                	ageString = JOptionPane.showInputDialog( "Please enter your age");
		}
		while (Integer.valueOf(ageString).intValue()< 0 || Integer.valueOf(ageString).intValue() > 100);

        	JOptionPane.showMessageDialog( null, "Your Ages is " + ageString);
		
                System.exit( 0 );
	}
}