你好，我有这段代码，你可以点击几个立方体将它们设置为死或活，然后根据一组规则，java将计算下一步后哪些单元格将是活的/死的。
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
class GameOfLife implements ActionListener{
Scanner scanner; //to read the text file
File file;
boolean play = false;
String filename = "birth.txt"; //the file that has to be read
Cell[][] cells=new Cell[10][10]; //array containing all the cells
JButton nextButton;
JButton playButton;
JPanel buttonPanel;
JPanel cellPanel;
GridLayout gridLayout=new GridLayout(10,10);
JFrame frame=new JFrame();
void buildit(){
readInput();
frame.setSize(600,700);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
buttonPanel=new JPanel();
buttonPanel.setPreferredSize(new Dimension(600,100));
frame.add(buttonPanel, BorderLayout.PAGE_START);
nextButton=new JButton("Next generation");
playButton=new JButton("Play");
nextButton.setPreferredSize(new Dimension(150,50));
playButton.setPreferredSize(new Dimension(150,50));
nextButton.addActionListener(this);
playButton.addActionListener(this);
frame.add(nextButton, BorderLayout.LINE_START);
frame.add(playButton, BorderLayout.LINE_END);
cellPanel=new JPanel();
cellPanel.setLayout(gridLayout); //gives the panel a gridlayout
cellPanel.setPreferredSize(new Dimension(600,600));
frame.add(cellPanel, BorderLayout.PAGE_START);
for(int i=0; i<100; i++){
cells[i%10][i/10]=new Cell(); //i/10 will be rounded down, so it equals the rownumber
cellPanel.add(cells[i%10][i/10]);
cells[i%10][i/10].addMouseListener(cells[i%10][i/10]); //add a mouselistener to the cell
cells[i%10][i/10].setOpaque(true); //makes the backgroundcolor visible
cells[i%10][i/10].setBackground(Color.BLACK);
cells[i%10][i/10].setBorder(BorderFactory.createLineBorder(Color.WHITE));
}
frame.setVisible(true);
for(int i=0; i<100; i++){
for(int j=0; j<9; j++){
if((i%10-1+j%3>=0) && (i%10-1+j%3<10) && (i/10-1+j/3>=0) && (i/10-1+j/3<10) && !(j==4)){ //exclude cells that are outside the frame (non existant) and the cell itself
cells[i%10][i/10].setNeighbours(cells[i%10-1+j%3][i/10-1+j/3]); //this adds all the neighbours to the arraylist
}
}
}
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==nextButton){
for(int i=0; i<100; i++){
cells[i%10][i/10].calculateNextState();
}
for(int i=0; i<100; i++){
cells[i%10][i/10].updateToNextState();
}
}
else{if (e.getSource()==playButton) {
play = true;
for (int p=0; p<3;p++) {
for(int i=0; i<100; i++){
cells[i%10][i/10].calculateNextState();
}
for(int i=0; i<100; i++){
cells[i%10][i/10].updateToNextState();
}
}
}
}
}
void readInput(){
try{
file = new File( filename);
scanner = new Scanner( file );
String nextGen=""; //this string will contain the output
int row=scanner.nextInt(); //read the row number
int col=scanner.nextInt(); //and the column number
Cell[][] cellen=new Cell[row][col]; //array containing all the cells
for(int i=0; i<row*col; i++){
cellen[i%row][i/col]=new Cell();
if(scanner.next().equals(".")){
cellen[i%row][i/col].setState(CellState.alive); //set the state
}
else{
cellen[i%row][i/col].setState(CellState.dead);
}
}
for(int i=0; i<row*col; i++){
for(int j=0; j<9; j++){
if((i%row-1+j%3>=0) && (i%row-1+j%3<row) && (i/col-1+j/3>=0) && (i/col-1+j/3<col) && !(j==4)){
cellen[i%row][i/col].setNeighbours(cellen[i%row-1+j%3][i/col-1+j/3]); //set the neighbours
}
}
}
for(int i=0; i<row*col; i++){
cellen[i%row][i/col].calculateNextState(); //calculate the next state for all the cells
}
for(int i=0; i<row*col; i++){
cellen[i%row][i/col].updateToNextState(); //update all the cells to the next state
}
for(int i=0; i<row; i++){
for(int j=0; j<col; j++){
if(cellen[i%row][i/col].getCurrentState()==CellState.alive){ //the cell is alive if getCurrentState is true
nextGen+="*";
}
else{
nextGen+=".";
}
}
nextGen+=System.getProperty("line.separator"); //add an enter after each row
}
System.out.println(nextGen); //print the next generation to the console
}
catch(FileNotFoundException e) {
System.out.println( "Could not find or open file <"+filename+">\n"+e );
}
}
public static void main(String[] args) {
new GameOfLife().buildit();
}
}
我的问题是，当我尝试无限次地保持计算时 我的程序卡住了，如下面的代码所示
else{if (e.getSource()==playButton) {
play = true;
for (int p=0; p<3;p++) {
for(int i=0; i<100; i++){
cells[i%10][i/10].calculateNextState();
}
for(int i=0; i<100; i++){
cells[i%10][i/10].updateToNextState();
}
}
}
我只进行了 3 次计算，但我希望它能够无限次地进行计算，直到出现停止按钮(要创建喷射流)，每次计算之间有 1 秒的暂停。我已经尝试过 while 循环，但这只是卡住了我的应用程序 对于暂停和无限计算的一些帮助将非常感激
最佳答案
这里的问题是您的代码正在 Swing Event Dispatch Thread 中运行，这意味着您正在做的所有事情都必须先完成，然后才能返回到响应按钮单击和绘图更改等操作。
我建议你研究一下:
-
javax.swing.SwingWorker<T,V>作为启动复杂或耗时任务的一种方式 -
javax.swing.Timer作为定期重新计算和步进模拟的一种方式。
关于java - 当循环卡住程序时继续计算并在计算之间暂停，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19553533/