converting from JTextArea to String and back

Question

For a homework assignment I am tasked with determine how many of each letter are in a sentence. I have already successfully completed the homework using JOptionPane. But I want to display in a JFrame. I am able to convert from the text area input, but am no table to convert from string back to text area display.

:

for (short i = 0; i < (output).length(); i++)
                {
                    char temp = Character.toLowerCase((output).charAt(i));
                    if (temp >= 'a' && temp <= 'z')
                        counts[temp - 'a']++;
                }

                for (short i = 0; i < counts.length; i++)
                {
                    output += (char) ('a' + i) + ":\t " + counts[i] + "\n";
                }

                for (short i = 0; i < (input).length(); i++)
                {
                    if ((output).charAt(i) == 'a' || (output).charAt(i) == 'A')
                        count++;
                }
                txaResults.setText(output);

Answer 1

Try and put the createAndShowGUI before the frame.setVisible. You're making the frame visible before your method can perform.

I think this may be your problem:

// You're doing this
output = txaResults.getText();

// but I think you want this
input = txaUserInput.getText();

String output = "";

// Your logic here
...
...

txaResults.setText(output);

You need to perform the logic from the txaUserInput and display it in the txaResults

Edit: try this for your logic

       int[] counts = new int[26];
       for (short i = 0; i < (input).length(); i++)

       {
                char temp = Character.toLowerCase((input).charAt(i));
                if (temp >= 'a' && temp <= 'z')
                    counts[temp - 'a']++;
       }


       for (short i = 0; i < counts.length; i++)
       {
               output += (char) ('a' + i) + ":\t " + counts[i] + "\n";
       }

       int count = 0;
       for (short i = 0; i < (input).length(); i++)
       {
                if ((input).charAt(i) == 'a' || (input).charAt(i) == 'A')
                    count++;
       }

       output += "" + count;
       txaResults.setText(output);