さて、このプログラムのダイアログにタイマーを実装してみました。このタイマーは、次のダイアログに移る前に 1 秒間一時停止します。これを試してみると、Java は次のようなエラーを大量に吐き出します。予期され、.class が予期され、解析中にファイルの終わりに達しました。特定の時間画面にダイアログを表示しようとしたときにウィンドウがフリーズしないようにタイマーを実装するにはどうすればよいですか? そして、Thread.sleep() を教えてはいけません。私はそれを試しましたが、それはアプリケーションをフリーズさせるだけです。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class RpsNuke extends JFrame
implements ActionListener
{
private final char moves[] = {'R', 'P', 'S', 'N'};
private JRadioButton rock, paper, scissors, nuke;
private JTextField display;
public RpsNuke()
{
super("Rock, Paper, Scissors, Nuke");
rock = new JRadioButton(" Rock ", true);
paper = new JRadioButton(" Paper ");
scissors = new JRadioButton(" Scissors ");
nuke = new JRadioButton(" Nuke ");
ButtonGroup rpsButtons = new ButtonGroup();
rpsButtons.add(rock);
rpsButtons.add(paper);
rpsButtons.add(scissors);
rpsButtons.add(nuke);
JButton go = new JButton(" Go ");
go.addActionListener(this);
display = new JTextField(25);
display.setEditable(false);
display.setBackground(Color.yellow);
Container c = getContentPane();
c.setLayout(new FlowLayout());
c.add(rock);
c.add(paper);
c.add(scissors);
c.add(nuke);
c.add(go);
c.add(display);
if (nuke.isSelected()){
display.setText("Don't do it man");}
else {
display.setText("");}
}
/**
* returns -1 if the player wins,
* 0 if it's a tie, and 1 if the computer wins
*/
private int nextPlay(char computerMove, char playerMove)
{
if ((computerMove == 'R'&&playerMove == 'S')||(computerMove == 'S'&&playerMove=='P')||(computerMove=='P'&&playerMove=='R')){
return 1;}
else if ((computerMove == 'R'&&playerMove == 'R')||(computerMove=='S'&&playerMove=='S')||(computerMove=='P'&&playerMove=='P')){
return 0;}
else if (playerMove == 'N'){
return 2;}
return -1;
}
public void actionPerformed(ActionEvent evt)
{
char playerMove, computerMove;
playerMove = 0;
if (rock.isSelected()){
playerMove = 'R';}
else if (paper.isSelected()){
playerMove = 'P';}
else if (scissors.isSelected()){
playerMove = 'S';}
else if (nuke.isSelected()){
playerMove = 'N';}
int k = (int)(Math.random() * 3);
computerMove = moves[k];
int result = nextPlay(computerMove, playerMove);
String msg = "";
if (result != 2)
{msg = " You said " + makeWord(playerMove) + ", I said " +
makeWord(computerMove);
if (result < 0){
msg += " -- you win.";}
else if (result == 0){
msg += " -- tie.";}
else if (result > 0){
msg += " -- I win.";}
}
if (result == 2)
{
TimerTask tasknew = new TimerScheduleFixedRateDelay();
Timer timer = new Timer();
// scheduling the task at fixed rate delay
timer.scheduleAtFixedRate(tasknew,1000,1000);
@Override
}
// this method performs the task
public void run() {
msg = "It's too late, we're all dead!";
msg = "...";
msg = "Look at what you did, there's nothing left.";
msg = "Looks like we have to start over again...";
window.setVisible(false);
main(null);
}
display.setText(msg);
}
private String makeWord(char move)
{
String word = "";
switch (move)
{
case 'R': word = "rock"; break;
case 'P': word = "paper"; break;
case 'S': word = "scissors"; break;
case 'N': word = "nuke"; break;
}
return word;
}
public static void main(String[] args) //Here
{
RpsNuke window = new RpsNuke();
window.setBounds(300, 300, 400, 140);
window.setDefaultCloseOperation(EXIT_ON_CLOSE);
window.setVisible(true);
}
} //And here