I am trying to simulate a coin flipper using Java and window builder. I have a button called "Flip" when that button is pressed the coin image changes depending on which number the random generator I created generates.
I now am trying to figure out a way to display the number of times the coin lands a heads or a tails in their respective JTextFields
. I was thinking of using a counter, but I am struggling with how to update that into the text field, so far it only puts in that I have flipped each coin once.
I am very new to programming so any advice or guidance is much appreciated.
// this button flips the coin
btnFlip = new JButton("Flip");
btnFlip.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
int headCounter = 0;
int tails = 0;
// this implements the random flip of the coin when the checkbox Run Multiple
// flips is unchecked
if (chckbxNewCheckBox.isSelected() == false) {
Random r = new Random();
int flipper = r.nextInt(2);
if (flipper == 1) {
lblImages.setIcon(new ImageIcon(FinalPrep.class.getResource("/finalPrep/heads.png")));
textFieldHeads.setText(String.valueOf(headCounter));
} else {
lblImages.setIcon(new ImageIcon(FinalPrep.class.getResource("/finalPrep/tails.png")));
textFieldTails.setText(String.valueOf(tails));
}
}
}
});
btnFlip.setFont(new Font("Tahoma", Font.PLAIN, 15));
panel_1.add(btnFlip);
You have to create something like 2 layers. One that contains the window itself along with the title (think of it like a receptor) then you have to create another "layer" that contains the buttons and the textfields. Something like this:
import javax.swing.*;
public class MyFrame extends JFrame {
private JPanel panel;
private JTextField textField;
private JButton button;
public MyFrame(){
panel = new JPanel(); //Step 1. Creation of a receptor
tfCount = new JTextField(10); //Step 2.
button = new JButton("Press Me"); //Creation of buttons & textfields.
panel.add(tfCount); //Step 3.
panel.add(button); //Add those graphics to the receptor
this.setContentPane(panel); //Step 4 Adjust the receptor to the object
this.setVisible(true);
this.setSize(400, 400);
this.setTitle("My 1st GUI!");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
(Sorry for the random example but you did not post any sample of code so I am trying to explain as best as I can)
Then you should put a "flag" depending of the number that was generated for example:
boolean flag = true; //Flag
int counter = 0; //The counter for the heads
int x; //The number you received from the generator
int counter_b; //The counter for the tails
if(x%2 == 0){ //If the number is even
flag = false; // You set down the flag
counter++; //And counter raises its value
}
else
counter_b++;
tfCount.setEditable(true); //This makes your textfield editable
tfCount.setText(String.valueOf(counter)); //And this prints the counter's value
Keep in mind that the counters for the tails and the heads are just examples for you to understand how to use "flags". I hope that I was able to help you because I am new too!! :)
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