程序在關閉應用程序後不停止

Question

我試圖重新創建連接四個，並且我成功了。但我想通過每隔一段時間切換一次顏色，讓玩家指出獲勝的四張碟片在哪裏。我對線程和編程中的時間概念很陌生。

我也成功地給了用戶這個指示，但在關閉應用程序後，控制檯仍然給出輸出，同樣當我使用setOnCloseRequest時。

其他一些問題：
：對於顏色我使用了HTML的名字，是它更好地使用十六進制三重或沒有偏好。
：要阻止網格和其他元素擁抱屏幕的左側，我添加了與背景顏色相同的邊框，有沒有更好的方法來做到這一點？
：我沒有創建一個方法將keycode轉換爲整數，而是在init函數中創建。我這樣做是因爲我不知道如何傳遞關鍵事件。這個怎麼做？

下面是代碼：

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

重寫從Application類stop()方法可以讓你關閉你的控制檯應用程序：

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

Answer 2

每在Java API文檔的Thread類。 ..

Java虛擬機繼續執行線程，直到以下任何一個ng發生：

• Runtime類的退出方法已被調用且安全管理器已允許執行退出操作。
• 所有不是守護進程線程的線程都已死亡，無論是從調用返回的run方法還是通過拋出傳播超出run方法的異常。

所以，你需要的是執行者創建守護線程會死當JVM準備退出。您可以使用自定義線程工廠來完成此任務這裏是一個非常簡單的例子：？如何關閉JavaFX應用程序]

Executors.newSingleThreadScheduledExecutor(new ThreadFactory() { 

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

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