刚学Java，请教一个问题，谢谢

loveshipting 2014-10-11 06:42:29

import javax.swing.*;   

import java.awt.event.*;   

   

public class LottoEvent implements ItemListener, ActionListener,   

    Runnable {   

   

    LottoMadness gui;   

    Thread playing;   

   

    public LottoEvent(LottoMadness in) {   

        gui = in;   

    }   

   

    public void actionPerformed(ActionEvent event) {   

        String command = event.getActionCommand();   

        if (command == "Play") {   

            startPlaying();   

        }   

        if (command == "Stop") {   

            stopPlaying();   

        }   

        if (command == "Reset") {   

            clearAllFields();   

        }   

    }   

   

    void startPlaying() {   

        playing = new Thread(this);   

        playing.start();   

        gui.play.setEnabled(false);   

        gui.stop.setEnabled(true);   

        gui.reset.setEnabled(false);   

        gui.quickpick.setEnabled(false);   

        gui.personal.setEnabled(false);   

    }   

   

    void stopPlaying() {   

        gui.stop.setEnabled(false);   

        gui.play.setEnabled(true);   

        gui.reset.setEnabled(true);   

        gui.quickpick.setEnabled(true);   

        gui.personal.setEnabled(true);   

        playing = null;   

    }   

   

    void clearAllFields() {   

        for (int i = 0; i < 6; i++) {   

            gui.numbers[i].setText(null);   

            gui.winners[i].setText(null);   

        }   

        gui.got3.setText("0");   

        gui.got4.setText("0");   

        gui.got5.setText("0");   

        gui.got6.setText("0");   

        gui.drawings.setText("0");   

        gui.years.setText(null);   

    }   

   

    public void itemStateChanged(ItemEvent event) {   

        Object item = event.getItem();   

        if (item == gui.quickpick) {   

            for (int i = 0; i < 6; i++) {   

                int pick;   

                do {   

                    pick = (int) Math.floor(Math.random() * 50 + 1);   

                } while (numberGone(pick, gui.numbers, i));   

                gui.numbers[i].setText("" + pick);   

            }   

        } else {   

            for (int i = 0; i < 6; i++) {   

                gui.numbers[i].setText(null);   

            }   

        }   

    }   

   

    void addOneToField(JTextField field) {   

        int num = Integer.parseInt("0" + field.getText());   

        num++;   

        field.setText("" + num);   

    }   

   

    boolean numberGone(int num, JTextField[] pastNums, int count) {   

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

            if (Integer.parseInt(pastNums[i].getText()) == num) {   

                return true;   

            }   

        }   

        return false;   

    }   

   

    boolean matchedOne(JTextField win, JTextField[] allPicks) {   

        for (int i = 0; i < 6; i++) {   

            String winText = win.getText();   

            if ( winText.equals( allPicks[i].getText() ) ) {   

                return true;   

            }   

        }   

        return false;   

    }   

   

    public void run() {   

        Thread thisThread = Thread.currentThread();   

        while (playing == thisThread) {   

            addOneToField(gui.drawings);   

            int draw = Integer.parseInt(gui.drawings.getText());   

            float numYears = (float)draw / 104;   

            gui.years.setText("" + numYears);   

   

            int matches = 0;   

            for (int i = 0; i < 6; i++) {   

                int ball;   

                do {   

                    ball = (int)Math.floor(Math.random() * 50 + 1);   

                } while (numberGone(ball, gui.winners, i));   

                gui.winners[i].setText("" + ball);   

                if (matchedOne(gui.winners[i], gui.numbers)) {   

                    matches++;   

                }   

            }   

            switch (matches) {   

                case 3:   

                    addOneToField(gui.got3);   

                    break;   

                case 4:   

                    addOneToField(gui.got4);   

                    break;   

                case 5:   

                    addOneToField(gui.got5);   

                    break;   

                case 6:   

                    addOneToField(gui.got6);   

                    gui.stop.setEnabled(false);   

                    gui.play.setEnabled(true);   

                    playing = null;   

            }   

            try {   

                Thread.sleep(100);   

            } catch (InterruptedException e) {   

                // do nothing   

            }   

        }   

    }   

}

import java.awt.*;   

import javax.swing.*;   

   

public class LottoMadness extends JFrame {   

    LottoEvent lotto = new LottoEvent(this);   

       

    // set up row 1   

    JPanel row1 = new JPanel();   

    ButtonGroup option = new ButtonGroup();   

    JCheckBox quickpick = new JCheckBox("Quick Pick", false);   

    JCheckBox personal = new JCheckBox("Personal", true);   

    // set up row 2   

    JPanel row2 = new JPanel();   

    JLabel numbersLabel = new JLabel("Your picks: ", JLabel.RIGHT);   

    JTextField[] numbers = new JTextField[6];   

    JLabel winnersLabel = new JLabel("Winners: ", JLabel.RIGHT);   

    JTextField[] winners = new JTextField[6];   

    // set up row 3   

    JPanel row3 = new JPanel();   

    JButton stop = new JButton("Stop");   

    JButton play = new JButton("Play");   

    JButton reset = new JButton("Reset");   

    // set up row 4   

    JPanel row4 = new JPanel();   

    JLabel got3Label = new JLabel("3 of 6: ", JLabel.RIGHT);   

    JTextField got3 = new JTextField("0");   

    JLabel got4Label = new JLabel("4 of 6: ", JLabel.RIGHT);   

    JTextField got4 = new JTextField("0");   

    JLabel got5Label = new JLabel("5 of 6: ", JLabel.RIGHT);   

    JTextField got5 = new JTextField("0");   

    JLabel got6Label = new JLabel("6 of 6: ", JLabel.RIGHT);   

    JTextField got6 = new JTextField("0", 10);   

    JLabel drawingsLabel = new JLabel("Drawings: ", JLabel.RIGHT);   

    JTextField drawings = new JTextField("0");   

    JLabel yearsLabel = new JLabel("Years: ", JLabel.RIGHT);   

    JTextField years = new JTextField();   

   

    public LottoMadness() {   

        super("Lotto Madness");   

        setSize(550, 270);   

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);   

        GridLayout layout = new GridLayout(5, 1, 10, 10);   

        setLayout(layout);   

           

        // Add listeners   

        quickpick.addItemListener(lotto);   

        personal.addItemListener(lotto);   

        stop.addActionListener(lotto);   

        play.addActionListener(lotto);   

        reset.addActionListener(lotto);   

   

        FlowLayout layout1 = new FlowLayout(FlowLayout.CENTER,   

            10, 10);   

        option.add(quickpick);   

        option.add(personal);   

        row1.setLayout(layout1);   

        row1.add(quickpick);   

        row1.add(personal);   

        add(row1);   

   

        GridLayout layout2 = new GridLayout(2, 7, 10, 10);   

        row2.setLayout(layout2);   

        row2.add(numbersLabel);   

        for (int i = 0; i < 6; i++) {   

            numbers[i] = new JTextField();   

            row2.add(numbers[i]);   

        }   

        row2.add(winnersLabel);   

        for (int i = 0; i < 6; i++) {   

            winners[i] = new JTextField();   

            winners[i].setEditable(false);   

            row2.add(winners[i]);   

        }   

        add(row2);   

   

        FlowLayout layout3 = new FlowLayout(FlowLayout.CENTER,   

            10, 10);   

        row3.setLayout(layout3);   

        stop.setEnabled(false);   

        row3.add(stop);   

        row3.add(play);   

        row3.add(reset);   

        add(row3);   

   

        GridLayout layout4 = new GridLayout(2, 3, 20, 10);   

        row4.setLayout(layout4);   

        row4.add(got3Label);   

        got3.setEditable(false);   

        row4.add(got3);   

        row4.add(got4Label);   

        got4.setEditable(false);   

        row4.add(got4);   

        row4.add(got5Label);   

        got5.setEditable(false);   

        row4.add(got5);   

        row4.add(got6Label);   

        got6.setEditable(false);   

        row4.add(got6);   

        row4.add(drawingsLabel);   

        drawings.setEditable(false);   

        row4.add(drawings);   

        row4.add(yearsLabel);   

        years.setEditable(false);   

        row4.add(years);   

        add(row4);   

           

        setVisible(true);   

    }   

   

    public static void main(String[] arguments) {   

        LottoMadness frame = new LottoMadness();   

    }   

}