更好地使用代碼,但可以使用代碼和 NetBeans。創建一個GridLayout,但給它的水平和垂直間隙屬性一個非零值。然後,如果使用該佈局的容器具有背景,並且將不透明組件放置到網格中,則會出現黑色線條。
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
@SuppressWarnings("serial")
public class TicTacToePanel extends JPanel {
private static final int ROWS = 3;
private static final int MY_C = 240;
private static final Color BG = new Color(MY_C, MY_C, MY_C);
private static final int PTS = 60;
private static final Font FONT = new Font(Font.SANS_SERIF, Font.BOLD, PTS);
public static final Color X_COLOR = Color.BLUE;
public static final Color O_COLOR = Color.RED;
private JLabel[][] labels = new JLabel[ROWS][ROWS];
private boolean xTurn = true;
public TicTacToePanel() {
setLayout(new GridLayout(ROWS, ROWS, 2, 2));
setBackground(Color.black);
MyMouse myMouse = new MyMouse();
for (int row = 0; row < labels.length; row++) {
for (int col = 0; col < labels[row].length; col++) {
JLabel label = new JLabel(" ", SwingConstants.CENTER);
label.setOpaque(true);
label.setBackground(BG);
label.setFont(FONT);
add(label);
label.addMouseListener(myMouse);
}
}
}
private class MyMouse extends MouseAdapter {
@Override // override mousePressed not mouseClicked
public void mousePressed(MouseEvent e) {
JLabel label = (JLabel) e.getSource();
String text = label.getText().trim();
if (!text.isEmpty()) {
return;
}
if (xTurn) {
label.setForeground(X_COLOR);
label.setText("X");
} else {
label.setForeground(O_COLOR);
label.setText("O");
}
// information to help check for win
int chosenX = -1;
int chosenY = -1;
for (int x = 0; x < labels.length; x++) {
for (int y = 0; y < labels[x].length; y++) {
if (labels[x][y] == label) {
chosenX = x;
chosenY = y;
}
}
}
// TODO: check for win here
xTurn = !xTurn;
}
}
private static void createAndShowGui() {
TicTacToePanel mainPanel = new TicTacToePanel();
JFrame frame = new JFrame("Tic Tac Toe");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}