我正在制作一个程序，它制作了Conway的生命游戏的图形模型，但它一旦发布就不会让我做任何事情;按钮不起作用，网格不会改变。我做错了什么？
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
public class gameOfLife extends JApplet{
private static final long serialVersionUID = 1L;
cellClass cell;
public void init() {
Container contentWindow = getContentPane();
cell = new cellClass();{{
setLayout(new FlowLayout()) }};
contentWindow.add(cell);
}
}
class grid extends JComponent{
private static final long serialVersionUID = 2L;
int XSIZE = 500;
int YSIZE = 500;
private int row;
private int col;
private int size = 5;
private cellClass c;
private Dimension preferredSize = new Dimension(XSIZE, YSIZE);
public void paint(Graphics a) {
int x, y;
for(x=0; x<row; x++){
for(y=0; y<col; y++){
if(c.grid[x][y] != 0){
a.drawRect(x * size, y * size, 5, 5);
}
}
}
a.drawRect(0, 0, XSIZE, YSIZE);
}
public grid(cellClass newGrid, int newRow, int newCol, int newSize) {
setMinimumSize(preferredSize);
setMaximumSize(preferredSize);
setPreferredSize(preferredSize);
this.row = newRow;
this.col = newCol;
this.size = newSize;
this.c = newGrid;
}
}
class cellClass extends JPanel implements ActionListener{
private static final long serialVersionUID = 3L;
static final int ROW = 100;
static final int COL = 100;
static final int SIZE = 5;
static final int min = 2;
static final int max = 3;
static final int birth = 3;
public int genCount = 0;
public int[][] grid;
private int[][] nextGrid;
private GridBagLayout gridBag = new GridBagLayout();
private GridBagConstraints c = new GridBagConstraints();
JLabel title;
JLabel genCounter;
JButton oneGen;
JButton contPlay;
JButton stop;
public grid board;
public boolean paused = true;
public boolean canChange = true;
cellClass() {
grid = new int [ROW][COL];
nextGrid = new int[ROW][COL];
makeGrid(grid);
setLayout(gridBag);
title = new JLabel("Game of Life Applet");
c.gridx = 0;
c.gridy = 0;
c.gridwidth = 2;
c.insets = new Insets(2,0,0,0);
c.anchor = GridBagConstraints.WEST;
add(title);
board = new grid(this,ROW,COL,SIZE);
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 1;
gridBag.setConstraints(board, c);
add(board);
oneGen = new JButton("Move one Generation");
c.gridx = 0;
c.gridy = 3;
c.gridwidth = 1;
gridBag.setConstraints(oneGen, c);
add(oneGen);
contPlay = new JButton("Play");
c.gridx = 1;
c.gridy = 3;
c.gridwidth = 1;
contPlay.setVisible(true);
gridBag.setConstraints(contPlay, c);
add(contPlay);
stop = new JButton("Stop");
c.gridx = 2;
c.gridy = 3;
c.gridwidth = 1;
stop.setVisible(false);
gridBag.setConstraints(stop, c);
add(stop);
genCounter = new JLabel("Generation: 0");
c.gridx = 0;
c.gridy = 1;
c.gridwidth = 1;
gridBag.setConstraints(genCounter, c);
add(genCounter);
}
class ButtonListener {
public void addActionListener(ActionEvent e) throws InterruptedException {
JButton source = (JButton)e.getSource();
if(source == oneGen){
nextGen();
}
if(source == contPlay){
paused = false;
canChange = false;
contPlay.setVisible(false);
stop.setVisible(true);
while (paused = false) {
nextGen();
Thread.sleep(1000);
}
}
if(source == stop) {
paused = true;
canChange = false;
stop.setVisible(false);
contPlay.setVisible(true);
}
}
}
public void mouseClicked(MouseEvent e){
int xco = e.getX() - board.getX();
int yco = e.getY() - board.getY();
if((e.getComponent() == board) && (paused == true)){
if(grid[xco/5][yco/5] == 1){
grid[xco/5][yco/5] = 0;
board.repaint();
}else if(grid[xco/5][yco/5] == 0){
grid[xco/5][yco/5] = 1;
board.repaint();
}
}
}
public void makeGrid(int[][] emptyGrid) {
int x, y;
for(x = 0; x < ROW; x++){
for(y = 0; y < COL; y++){
emptyGrid[x][y] = 0;
}
}
}
public void nextGen() {
getNextGen();
board.repaint();
genCount++;
genCounter.setText("Generation: " + Integer.toString(genCount));
}
public void getNextGen() {
int x, y, neighbor;
makeGrid(nextGrid);
for(x = 0; x < ROW; x++){
for(y=0; y<COL; y++){
neighbor = calculate(x,y);
if(grid[x][y] != 0){
if((neighbor >= min) && (neighbor <= max)) {
nextGrid[x][y] = neighbor;
}
}else {
if(neighbor == birth){
nextGrid[x][y] = birth;
}
}
}
}
makeGrid(grid);
copyGrid(nextGrid,grid);
}
public void copyGrid(int[][] source, int[][] newGrid) {
int x, y;
for(x=0; x<ROW; x++){
for(y=0; y<COL; y++){
newGrid[x][y] = source[x][y];
}
}
}
private int calculate(int x, int y){
int a, b, total;
total = (grid[x][y]);
for (a = -1; a<= 1; a++) {
for (b = -1; b <= 1; b++){
if(grid[(ROW + (x + a)) % ROW][(COL + (y + b)) % COL] != 0) {
total++;
}
}
}
return total;
}
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
}
}
如果有人能告诉我它有什么问题，那就太棒了。
答案 0 :(得分：5)
你的一个主要问题是你试图在Swing事件线程上运行一个很长的进程，也就是所谓的Event Dispatch Thread或EDT，这实际上会冻结你的程序。我发现这个问题出现在这里：
class ButtonListener {
public void addActionListener(ActionEvent e) throws InterruptedException {
JButton source = (JButton) e.getSource();
// ...
while (paused = false) { // *******
nextGen();
Thread.sleep(1000); // ******
}
}
// ...
}
你有一个while(true)循环和一个Thread.sleep(...)都不应该在事件线程上调用。
相反，您应该使用Swing Timer。
有关Swing事件线程的更多信息，请阅读Concurrency in Swing。
另外（1），你在哪里允许细胞被初始化为活着？没有活细胞开始，所有世代只会显示一个空格子？您是否需要将MouseListener添加到一个或多个组件中？我认为这是一个好主意。
另外（2）按钮通常会在向Swing button tutorial中添加ActionListeners时更好地工作。你有没有经历过Swing教程？如果没有，请查看它们（找到它们here），因为它们会对你有所帮助，我想。
另外（3）你可能会咬你的东西而不是你可以咀嚼，因为你试图一次解决太多问题。当我创建一个类似于此的GUI时，我喜欢单独处理程序的每个部分，并在将它们组合成一个大程序之前先使它工作。因此，例如，首先在非GUI模型上工作，并通过调用模型方法的测试代码来运行它们。接下来每次对GUI的每个部分进行一次工作，包括JButtons，然后是MouseListener，然后是生命游戏的显示，然后实现世代。
调试较小的测试程序然后尝试调试整个shebang要容易得多，相信我。
答案 1 :(得分：1)
你的程序从我开始但有其他问题。 这将使您开始解决问题：
变化：
cell = new cellClass();
要：
cell = new cellClass(){{
setLayout(new FlowLayout());
}};
答案 2 :(得分：0)
也许在init（）中尝试super.init（）？