import javax.swing.*; public class Project0 { public static void main(String[] args) { String input = JOptionPane.showInputDialog(null, "Please enter a sentence."); while(!input.equalsIgnoreCase("STOP")) { int lowercase = 0; int uppercase = 0; for(int i = 0; i < input.length(); i++) { if(new Character(input.charAt(i)).equals(new Character('e'))) lowercase++; if(new Character(input.charAt(i)).equals(new Character('E'))) uppercase++; } JOptionPane.showMessageDialog(null, "Number of lower case e's: " + lowercase + "\n" + " Number of upper case e's: " + uppercase); input = JOptionPane.showInputDialog(null, "Please enter a sentence."); } } }