JAVA Write a GUI program that has a Coin object as one of its instance variables

Question

JAVA

Write a GUI program that has a Coin object as one of its instance variables. When a button is pushed, the Coin is flipped, and its heads/tails result is used to update the GUI. The GUI has the following widgets: a JLabel "Heads", and a JTextField that contains the number of times the coin is Heads. a JLabel "Tails", and a JTextField that contains the number of times the coin is Tails. a JButton "Flip". When the user clicks the Flip button, the coin is flipped one time, and the Heads or Tails JTextField is updated as appropriate. The GUI initially displays 0 as the value for both Heads and Tails.

Thank you!

Explanation / Answer

// CoinFlipping.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class CoinFlipping extends Frame implements ActionListener {
// GUI Components
JLabel labelHeads, labelTails;
JTextField outputH, outputT;
JButton b;
// counters for heads and tails
int heads = 0;
int tails = 0;

public void init( ) {
  
JFrame c = new JFrame("Coin FLip");
c.setLayout(new FlowLayout());
c.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
labelHeads = new JLabel( "Number of heads" );
outputH = new JTextField( 10 );
outputH.setEditable( false );
outputH.setText("0");
c.add( labelHeads );
c.add( outputH );
labelTails = new JLabel( "Number of tails" );
outputT = new JTextField( 10 );
outputT.setEditable( false );
outputT.setText("0");
c.add( labelTails );
c.add( outputT );
b = new JButton( "FLIP" );
b.addActionListener( this );
c.add( b );
c.setSize(600,200);
c.setVisible(true);
}

public void actionPerformed( ActionEvent e ) {
boolean toss = flip( );
if ( toss )
outputH.setText( "" + ++heads );
else
outputT.setText( "" + ++tails );
  
}

boolean flip( ) {
int rn = ( int ) ( Math.random( ) * 2 );
if ( rn == 0 )
return false;
else
return true;
}

public static void main(String[] args) {
CoinFlipping coin = new CoinFlipping();
coin.init();
}

}

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