程序在关闭应用程序后不停止

Question

我试图重新创建连接四个，并且我成功了。但我想通过每隔一段时间切换一次颜色，让玩家指出获胜的四张碟片在哪里。我对线程和编程中的时间概念很陌生。

我也成功地给了用户这个指示，但在关闭应用程序后，控制台仍然给出输出，同样当我使用setOnCloseRequest时。

其他一些问题：
：对于颜色我使用了HTML的名字，是它更好地使用十六进制三重或没有偏好。
：要阻止网格和其他元素拥抱屏幕的左侧，我添加了与背景颜色相同的边框，有没有更好的方法来做到这一点？
：我没有创建一个方法将keycode转换为整数，而是在init函数中创建。我这样做是因为我不知道如何传递关键事件。这个怎么做？

下面是代码：

import javafx.application.Application; 
import javafx.scene.Scene; 
import javafx.scene.control.Button; 
import javafx.scene.control.Label; 
import javafx.scene.layout.GridPane; 
import javafx.scene.layout.HBox; 
import javafx.scene.layout.VBox; 
import javafx.stage.Stage; 

import java.util.concurrent.Executors; 
import java.util.concurrent.ScheduledExecutorService; 
import java.util.concurrent.TimeUnit; 

public class FourInARow extends Application { 

GridPane boardGrid = new GridPane(); 

Label[][] labels = new Label[7][7]; 
Label statusLabel = new Label(); 
int[][] cell = new int[7][6]; 

int player = 0; 
int won = 0; 

String baseStyle = "-fx-background-radius: 40; -fx-min-width: 80; -fx-min-height: 80; -fx-alignment: center; -fx-border-width: 2; -fx-border-color: #000000;-fx-background-color: "; 

ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor(); 

public static void main(String[] args){launch(args);} 

private void init(Stage window){ 

    createLabels(); 
    startGame(); 

    Label above = new Label("Try to connect four discs in a row!"); 
    above.setStyle("-fx-font-size: 30; -fx-alignment: center; -fx-min-width: 600"); 
    boardGrid.setStyle("-fx-background-color: silver;-fx-border-color: #F4F4F4;-fx-border-width: 0 20 0 20"); 
    Button newGame = new Button("New Game"); 
    newGame.setStyle("-fx-min-width: 100;-fx-font-size:20"); 
    newGame.setOnAction(e -> startGame()); 
    statusLabel.setStyle("-fx-font-size: 30;-fx-alignment: center; -fx-min-width: 300;"); 
    HBox below = new HBox(); 
    below.setStyle("-fx-border-width: 0 0 0 20;-fx-border-color: #F4F4F4"); 
    below.getChildren().addAll(newGame, statusLabel); 
    VBox layout = new VBox(); 
    layout.getChildren().addAll(above, boardGrid, below); 
    Scene scene = new Scene(layout, 600, 620); 
    scene.setOnKeyPressed(e -> { 
     if (won == 0) { 
      try { 
       String k = e.getCode().toString(); 
       int l = k.length(); 
       int col = Integer.parseInt(k.substring(l - 1, l)) - 1; 
       placeDisc(col, player); 
       switchPlayer(); 
       updateScreen(); 
      } catch (NumberFormatException | ArrayIndexOutOfBoundsException error) { 
       System.out.println("error: " + error); 
      } 
     } 
    }); 
    window.setScene(scene); 
    window.setTitle("Connect Four"); 

    threadThing(); 
} 

private void threadThing() { 
    service.scheduleAtFixedRate(() -> { 
     try { 
      wonStyle(); 
     } catch (InterruptedException e) { 
      e.printStackTrace(); 
     } 
    }, 0, 1, TimeUnit.SECONDS); 
} 

private void startGame() { 
    cell = new int[7][6]; 
    won = player = 0; 
    statusLabel.setText(""); 
    updateScreen(); 
} 

private void updateScreen() { 
    for (int i = 0; i < 7; i++) { 
     for (int j = 0; j < 6; j++) { 
      labels[i][j].setStyle(baseStyle + addStyle(cell[i][j])); 
     } 
     labels[i][6].setText(Integer.toString(i+1)); 
     labels[i][6].setStyle("-fx-alignment: center;-fx-min-width: 80;-fx-background-color: #F4F4F4;-fx-font-size: 30;"); 
    } 

    switch(won) { 
     case 1: statusLabel.setText("Blue has won!");break; 
     case 2: statusLabel.setText("Yellow has won!");break; 
    } 
} 

private String addStyle(int cell) { 
    String style = "silver"; 
    switch(cell){ 
     case 1: style = "blue"; break; 
     case 2: style = "yellow"; break; 
     case 3: style = "darkblue"; break; 
     case 4: style = "gold;"; break; 
    } 
    return style; 
} 

private void placeDisc(int col, int player) { 
    for (int i = 5; i >= 0 ; i--) { 
     if(cell[col][i] == 0){ 
      cell[col][i] = 1; 
      if(player == 1) cell[col][i] = 2; 
      break; 
     }else{ 
      if(i==0) switchPlayer(); 
     } 
    } 
    checkWon(); 
} 

private void checkWon() { 
    for (int i = 0; i < 7; i++) { 
     for (int j = 0; j < 6; j++) { 
      if (cell[i][j] != 0) { 
       try { 
        if (cell[i][j] == cell[i][j + 1] && cell[i][j] == cell[i][j + 2] && cell[i][j] == cell[i][j + 3]) { 
         won = cell[i][j]; 
         cell[i][j] = cell[i][j + 1] = cell[i][j + 2] = cell[i][j + 3] = cell[i][j] + 2; 
        } 
       }catch(ArrayIndexOutOfBoundsException error) {} 
       try { 
        if (cell[i][j] == cell[i + 1][j] && cell[i][j] == cell[i + 2][j] && cell[i][j] == cell[i + 3][j]) { 
         System.out.println("Horizontal win"); 
         won = cell[i][j]; 
         cell[i][j] = cell[i + 1][j] = cell[i + 2][j] = cell[i + 3][j] = cell[i][j] + 2; 
        } 
       }catch(ArrayIndexOutOfBoundsException error) {} 
       try { 
        if (cell[i][j] == cell[i + 1][j + 1] && cell[i][j] == cell[i + 2][j + 2] && cell[i][j] == cell[i + 3][j + 3]) { 
         won = cell[i][j]; 
         cell[i][j] = cell[i + 1][j + 1] = cell[i + 2][j + 2] = cell[i + 3][j + 3] = cell[i][j] + 2; 
        } 
       }catch(ArrayIndexOutOfBoundsException error) {} 
       try { 
        if (cell[i][j] == cell [i + 1][j - 1] && cell[i][j] == cell[i + 2][j - 2] && cell[i][j] == cell[i + 3][j - 3]) { 
         won = cell[i][j]; 
         cell[i][j] = cell[i + 1][j - 1] = cell[i + 2][j - 2] = cell[i + 3][j - 3] = cell[i][j] + 2; 
        } 
       }catch(ArrayIndexOutOfBoundsException error) {} 
      } 
     } 
    } 
} 

private void switchPlayer() { 
    if(player == 0) player = 2; 
    player--; 
} 

private void createLabels() { 
    for (int i = 0; i < 7; i++) { 
     for (int j = 0; j < 7; j++) { 
      labels[i][j] = new Label(); 
      boardGrid.add(labels[i][j], i, j); 
     } 
    } 
} 

private void wonStyle() throws InterruptedException { 
    System.out.println("Test"); 
    boolean run = false; 
    for (int i = 0; i < 7; i++) { 
     for (int j = 0; j < 6; j++) { 
      if(cell[i][j] > 2 && !run){ 
       Thread.sleep(500); 
       addStyleFlicker(); 
       run = true; 
      } 
     } 
    } 
} 

private void addStyleFlicker() throws InterruptedException { 
    String[] styleOne = {"-fx-background-radius: 40; -fx-min-width: 80; -fx-min-height: 80; -fx-alignment: center; -fx-border-width: 2; -fx-border-color: #000000;-fx-background-color: blue;", 
         "-fx-background-radius: 40; -fx-min-width: 80; -fx-min-height: 80; -fx-alignment: center; -fx-border-width: 2; -fx-border-color: #000000;-fx-background-color: darkblue;"}; 
    String[] styleTwo = {"-fx-background-radius: 40; -fx-min-width: 80; -fx-min-height: 80; -fx-alignment: center; -fx-border-width: 2; -fx-border-color: #000000;-fx-background-color: yellow;", 
         "-fx-background-radius: 40; -fx-min-width: 80; -fx-min-height: 80; -fx-alignment: center; -fx-border-width: 2; -fx-border-color: #000000;-fx-background-color: gold;"}; 
    for (int i = 0; i < 7; i++) { 
     for (int j = 0; j < 6; j++) { 
      if(cell[i][j] == 3){ 
       labels[i][j].setStyle(styleOne[0]); 
      }else if(cell[i][j] == 4){ 
       labels[i][j].setStyle(styleTwo[0]); 
      } 
     } 
    } 
    Thread.sleep(500); 
    for (int i = 0; i < 7; i++) { 
     for (int j = 0; j < 6; j++) { 
      if(cell[i][j] == 3){ 
       labels[i][j].setStyle(styleOne[1]); 
      }else if(cell[i][j] == 4) { 
       labels[i][j].setStyle(styleTwo[1]); 
      } 
     } 
    } 
} 

@Override 
public void start(Stage window) throws Exception { 
    init(window); 
    window.show(); 
} 
} 

Answer 1

重写从Application类stop()方法可以让你关闭你的控制台应用程序：

@Override 
public void stop() { 
    System.exit(0); 
} 

Answer 2

每在Java API文档的Thread类。 ..

Java虚拟机继续执行线程，直到以下任何一个ng发生：

• Runtime类的退出方法已被调用且安全管理器已允许执行退出操作。
• 所有不是守护进程线程的线程都已死亡，无论是从调用返回的run方法还是通过抛出传播超出run方法的异常。

所以，你需要的是执行者创建守护线程会死当JVM准备退出。您可以使用自定义线程工厂来完成此任务这里是一个非常简单的例子：？如何关闭JavaFX应用程序]

Executors.newSingleThreadScheduledExecutor(new ThreadFactory() { 

     @Override 
     public Thread newThread(Runnable r) { 
      Thread t = new Thread(r); 
      t.setDaemon(true); 
      return t; 
     } 
    }); 

的