Question

Must create a JFrame in JAVA that must convert both from BASE2 to BASE10 and also BASE10 to BASE2 in the same JFrame. NOTE: The results of the conversion must be displayed within the GUI - that is not in a popup or as console output.

Answer 1

Hi, I have answered similar questions multiple times before. Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. If not, PLEASE let me know before you rate, I’ll help you fix whatever issues. Thanks

Mode of operation: You enter a decimal value (base 10) in decimal text field, press "Convert Decimal" button, the resultant binary value (base 2) will be displayed in binary text field. You enter a binary value in binary text field and press "Convert Binary", the value will be converted to decimal and displayed in decimal text field.

// BinaryDecimalConverter.java

import java.awt.event.*;

import java.awt.*;

import javax.swing.*;

public class BinaryDecimalConverter extends JFrame implements ActionListener {

      private static final long serialVersionUID = 1L; // suppress warnings

      // attributes for Decimal conversion

      private JButton decButton;

      private JLabel decLabel;

      private JTextField decField;

      // atttributes for Binary conversion

      private JButton binButton;

      private JLabel binLabel;

      private JTextField binField;

      // button for clearing

      private JButton clearButton;

      // class Constructor

      BinaryDecimalConverter() {

            // Used to specify GUI component layout

            GridBagConstraints layoutConst = null;

            setLayout(new GridBagLayout());

            // Set frame's title

            setTitle("Binary-Decimal converter");

            // Create objects to convert decimal numbers

            // Decimal conversion

            // Label

            decLabel = new JLabel("Decimal number:");

            // Create grid and add label

            layoutConst = new GridBagConstraints();

            // padding space around components

            layoutConst.insets = new Insets(10, 10, 10, 10);

            layoutConst.gridx = 0; // row 0

            layoutConst.gridy = 0; // column 0

            add(decLabel, layoutConst);

            // Field

            // Create field for data entry

            decField = new JTextField();

            decField.setEditable(true);

            decField.setText("0");

            decField.setColumns(15); // Initial width of 15 units

            // Create grid and add field

            layoutConst = new GridBagConstraints();

            layoutConst.insets = new Insets(10, 10, 10, 10);

            layoutConst.gridx = 1;

            layoutConst.gridy = 0;

            add(decField, layoutConst);

            // Button

            // Create button and add action listener

            decButton = new JButton("Convert Decimal");

            decButton.addActionListener(this);

            decButton.setPreferredSize(new Dimension(200, 20));

            // Create grid and add button

            layoutConst = new GridBagConstraints();

            layoutConst.insets = new Insets(10, 10, 10, 10);

            layoutConst.gridx = 2;

            layoutConst.gridy = 0;

            add(decButton, layoutConst);

            // End decimal conversion

            // Binary conversion

            // Label

            binLabel = new JLabel("Binary number:");

            layoutConst.gridx = 0;

            layoutConst.gridy = 1;

            add(binLabel, layoutConst);

            // Field

            binField = new JTextField();

            binField.setEditable(true);

            binField.setText("0");

            binField.setColumns(15); // Initial width of 15 units

            layoutConst.gridx = 1;

            layoutConst.gridy = 1;

            add(binField, layoutConst);

            // Button

            // Create button and add action listener

            binButton = new JButton("Convert Binary");

            binButton.addActionListener(this);

            binButton.setPreferredSize(new Dimension(200, 20));

            layoutConst.gridx = 2;

            layoutConst.gridy = 1;

            add(binButton, layoutConst);

            // End binary conversion

            // initializing clear button

            clearButton = new JButton("Clear");

            clearButton.setPreferredSize(new Dimension(200, 20));

            clearButton.addActionListener(this);

            layoutConst.gridx = 2;

            layoutConst.gridy = 2;

            add(clearButton, layoutConst);

      }

      /*

      * Method is automatically called when an event occurs (e.g. mouse click on

      * button

      */

      @Override

      public void actionPerformed(ActionEvent event) {

            // finding which button is clicked

            if (event.getSource().equals(decButton)) {

                  // parsing integer value in decField as a binary string

                  String bin = Integer.toBinaryString(Integer.valueOf(decField

                              .getText()));

                  binField.setText(bin);

            } else if (event.getSource().equals(binButton)) {

                  // parsing String from binField from binary String to integer

                  int number = Integer.valueOf(binField.getText(), 2);

                  // displaying in decField

                  decField.setText(number + "");

            } else if (event.getSource().equals(clearButton)) {

                  //clearing text fields

                  binField.setText("");

                  decField.setText("");

            }

      }

      public static void main(String[] args) {

            // Creating a BinaryDecimalConverter and making it visible

            BinaryDecimalConverter myFrame = new BinaryDecimalConverter();

            myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            myFrame.pack();

            myFrame.setVisible(true);

      }

}

/*OUTPUT*/