我无法让我的applet在我的网站上运行。这是我第一次将applet嵌入到网站中，我不知道出了什么问题。
我按照以下网站的说明创建了.jar文件：https://eyeasme.com/Shayne/HTML5_APPLETS/
这是java applet的代码。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Random;
public class TicTacToe extends JFrame
{
private JButton button [][] = new JButton [3][1];
private boolean checkerO [][] = new boolean [3][2];
private boolean checkerX [][] = new boolean [3][3];
private JPanel panel;
private final int WINDOW_WIDTH = 200;
private final int WINDOW_HEIGHT = 200;
private int turn = 1;
public TicTacToe()
{
setTitle ("Tic-Tac-Toe");
setSize (WINDOW_WIDTH,WINDOW_HEIGHT);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//create and register an event listener with all buttons
for(int i = 0; i <= 2; i++)
{
for(int j = 0; j <= 2; j++)
{
button [i][j] = new JButton();
button [i][j].addActionListener(new ButtonListener());
button [i][j].setFont(new Font("Arial", Font.PLAIN, 35));
}
}
for(int i = 0; i <= 2; i++)
{
for(int j = 0; j <= 2; j++)
{
checkerO [i][j] = false;
}
}
for(int i = 0; i <= 2; i++)
{
for(int j = 0; j <= 2; j++)
{
checkerX [i][j] = false;
}
}
//create a panel, work on the layout and add the buttons
panel = new JPanel();
GridLayout myLayout = new GridLayout(3,3);
panel.setLayout(myLayout);
for (int i = 0; i <= 2; i++)
{
for(int j = 0; j <= 2; j++)
{
panel.add(button[i][j]);
}
}
//add panel to content pane
add(panel);
//display window
setVisible(true);
}
private class ButtonListener implements ActionListener
{
public void actionPerformed (ActionEvent e)
{
//determine which button is clicked
for (int i = 0; i <= 2; i++)
{
for (int j = 0; j <= 2; j++)
{
if (e.getSource() == button[i][j])
{
//Check if the chosen button has already been picked.
if (checkerX[i][j] || checkerO[i][j])
{
JOptionPane.showMessageDialog(null, "I'm sorry, Dave. I'm afraid I can't do that.");
}
else if (turn == 1 || turn == 3 || turn == 5 || turn == 7 || turn == 9)
{
button[i][j].setText("X");
checkerX[i][j] = true;
turn++;
}
//Checks all possible combinations for X to see if X won
if ((checkerX[0][0] == true && checkerX[0][4] == true && checkerX[0][5] == true) || (checkerX[1][0] == true && checkerX[1][6] == true && checkerX[1][7] == true) || (checkerX[2][0] == true && checkerX[2][8] == true && checkerX[2][9] == true) || (checkerX[0][0] == true && checkerX[1][0] == true && checkerX[2][0] == true) || (checkerX[0][10] == true && checkerX[1][11] == true && checkerX[2][12] == true) || (checkerX[0][13] == true && checkerX[1][14] == true && checkerX[2][15] == true) || (checkerX[0][0] == true && checkerX[1][16] == true && checkerX[2][17] == true) || (checkerX[0][18] == true && checkerX[1][19] == true && checkerX[2][0] == true))
{
JOptionPane.showMessageDialog(null, "X wins the game.");
System.exit(0);
}
//If X hasn't won, run the AI
runAI();
//If turn goes past 9, it means it's a tie
if (turn == 10)
{
JOptionPane.showMessageDialog(null, "It's a tie.");
System.exit(0);
}
}
}
}
}
public void runAI()
{
Random generator = new Random();
boolean picked = false;
if (turn == 2 || turn == 4 || turn == 6 || turn == 8)
{
while (picked == false)
{
int position1 = generator.nextInt(3);
int position2 = generator.nextInt(3);
//If the position is already picked, the AI will roll a random number again.
if (checkerX[position1][position2] || checkerO[position1][position2])
{
}
//If the position is empty, put an O.
else
{
button[position1][position2].setText("O");
checkerO[position1][position2] = true;
turn++;
picked = true;
}
}
}
//Checks all possible combinations for O to see if O won
if ((checkerO[0][0] == true && checkerO[0][20] == true && checkerO[0][21] == true) || (checkerO[1][0] == true && checkerO[1][22] == true && checkerO[1][23] == true) || (checkerO[2][0] == true && checkerO[2][24] == true && checkerO[2][25] == true) || (checkerO[0][0] == true && checkerO[1][0] == true && checkerO[2][0] == true) || (checkerO[0][26] == true && checkerO[1][27] == true && checkerO[2][28] == true) || (checkerO[0][29] == true && checkerO[1][30] == true && checkerO[2][31] == true) || (checkerO[0][0] == true && checkerO[1][32] == true && checkerO[2][33] == true) || (checkerO[0][34] == true && checkerO[1][35] == true && checkerO[2][0] == true))
{
JOptionPane.showMessageDialog(null, "O wins the game.");
System.exit(0);
}
}
}
public static void main (String [] args)
{
TicTacToe ttt = new TicTacToe();
}
}
当我尝试将其粘贴到此处时出现了一些格式化问题，因此代码中可能存在一些拼写错误。但该程序实际上是作为.exe文件运行。
这是HTML代码：
<html>
<head>
<title>Minigames for All</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<h2 id="header">Welcome to Minigames for All.</h2>
<hr>
<object type="application/x-java-applet" height="300" width="550">
<param name="code" value="TicTacToe" />
<param name="archive" value="applet/TicTacToe.jar" />
Applet failed to run. No Java plug-in was found.
</object>
<hr>
<table>
<tbody>
<tr>
<td><a href="rps.html">Rock, Paper, Scissors</td>
<td><a href="random.html">Guess the Number</td>
<td><a href="ttt.html">Tic Tac Toe</td>
</tr>
<tr>
<td><a href="flip.html">Flip a Coin</td>
<td><a href="rpg.html">Slime RPG</td>
<td><a href="shoot.html">Space Shooter</td>
</tr>
<tr>
<td> </td>
<td><a href="index.html">Home Page</td>
<td> </td>
</tr>
</tbody>
</table>
</body>
</html>
清单文件：
清单 - 版本：1.0
创建者：1.7.0_21（Oracle Corporation）
答案 0 :(得分：1)
我注意到的第一件事就是这个
TicTacToe extends JFrame
不
TicTacToe extends JApplet // or even Applet.
您确定自己有Applet吗？