Binary Converter

We are going to make a translator that converts binary numbers to their equivalent ASCII characters.

Make a UI that looks something like this:



You will need a JFrame and a JPanel. The input field will be a JTextField, the output can be a JLabel as it is only used for display.

Make the text field nice and big, ex. JTextField answer = new JTextField(20);

You will also need to add an action listener to the JButton so you know when to do the conversion.

Here is a method that will convert a String of binary digits to a String containing the equivalent ASCII character.

String convert(String input) {
    if(input.length() != 8){
        JOptionPane.showMessageDialog(null, "Enter 8 bits, silly!!!");
        return "-";
    }
    String binary = "[0-1]+";//must contain numbers in the given range
    if (!input.matches(binary)) {
        JOptionPane.showMessageDialog(null, "Binary can only contain 1s or 0s, silly!!!");
        return "-";   
    }
    try {
        int asciiValue = Integer.parseInt(input, 2);
        char theLetter = (char) asciiValue;
        return "" + theLetter;
    } catch (Exception e) {
        JOptionPane.showMessageDialog(null, "Enter a binary, silly!!!");
        return "-";
    }
}