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 a mouse 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 "-";
          }
     }