JavaExercises/Head First Java/DiceService.java at master · biblelamp/JavaExercises · GitHub

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import javax.swing.*;

import java.awt.event.*;

import java.io.*;

public class DiceService implements Service {

JLabel label;

JComboBox numOfDice;

public JPanel getGuiPanel() {

JPanel panel = new JPanel();

JButton button = new JButton("Roll 'em!");

String[] choices = {"1", "2", "3", "4", "5"};

numOfDice = new JComboBox(choices);

label = new JLabel("dice values here");

button.addActionListener(new RollEmListener());

panel.add(numOfDice);

panel.add(button);

panel.add(label);

return panel;

}

public class RollEmListener implements ActionListener {

public void actionPerformed(ActionEvent ev) {

// roll the dice

String diceOutput = "";

String selection = (String) numOfDice.getSelectedItem();

int numOfDiceToRoll = Integer.parseInt(selection);

for (int i = 0; i < numOfDiceToRoll; i++) {

int r = (int) ((Math.random() * 6) + 1);

diceOutput += (" " + r);

}

label.setText(diceOutput);

}

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