Java JMenuItems没有响应
我已经创造了一个3x3记忆游戏的颜色。程序运行并显示颜色,但Java JMenuItems没有响应,java,swing,jmenu,jmenuitem,jmenubar,Java,Swing,Jmenu,Jmenuitem,Jmenubar,我已经创造了一个3x3记忆游戏的颜色。程序运行并显示颜色,但JMenuBar无法正常工作。新棋盘、游戏和结束游戏的按钮不工作。我的Actionlistener有什么问题吗 代码应该是这样工作的: 这是StartPlayer import gui.MemoryGameWindow; import gui.ColoredPanel; import gui.GamePanel; public class StartPlayer { public static void main(String[]
JMenuBar
无法正常工作。新棋盘、游戏和结束游戏的按钮不工作。我的Actionlistener
有什么问题吗
代码应该是这样工作的:
这是StartPlayer
import gui.MemoryGameWindow;
import gui.ColoredPanel;
import gui.GamePanel;
public class StartPlayer {
public static void main(String[] args) {
new MemoryGameWindow();
}
}
package gui;
import java.awt.Color;
import java.awt.event.MouseListener;
import javax.swing.JPanel;
public class ColoredPanel extends JPanel {
private Color thisColor = null;
private Color challenge = null;
public ColoredPanel(Color color) {
this.thisColor = color;
setBackground(color);
}
public void setGameMode(Color c, MouseListener ml) {
setBackground(Color.LIGHT_GRAY);
this.challenge = c;
System.out.println("Coloredpanel says challenge is " + this.challenge);
addMouseListener(ml);
}
public void restoreBackground() {
setBackground(this.thisColor);
}
}
package gui;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class GamePanel extends JPanel {
private Color[] colors = new Color[] { Color.GREEN, Color.YELLOW, Color.MAGENTA };
private Random r = new Random();
private int square = 9;
private Color challenge;
private int countOfPossibleHits = 0;
private int countOfWinnerHits = 0;
private JPanel challengeDisplay;
public GamePanel(JPanel cd) {
this.challengeDisplay = cd;
setLayout(new GridLayout(3, 0, 2, 2));
for (int i = 0; i < this.square; i++)
add(new ColoredPanel(this.colors[this.r.nextInt(this.colors.length)]));
}
public Color startGame() {
Color[] existingColors = new Color[getComponentCount()];
int i;
for (i = 0; i < getComponentCount(); i++)
existingColors[i] = ((ColoredPanel)getComponent(i)).getBackground();
this.challenge = existingColors[this.r.nextInt(existingColors.length)];
this.countOfPossibleHits = 0;
for (i = 0; i < getComponentCount(); i++) {
if (((ColoredPanel)getComponent(i)).getBackground() == this.challenge)
this.countOfPossibleHits++;
}
for (i = 0; i < getComponentCount(); i++)
((ColoredPanel)getComponent(i)).setGameMode(this.challenge, new TheMouselistener());
return this.challenge;
}
class TheMouselistener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
ColoredPanel clickedObject = (ColoredPanel)e.getSource();
clickedObject.restoreBackground();
if (clickedObject.getBackground() != GamePanel.this.challenge) {
clickedObject.add(new JLabel("Game Over!"));
GamePanel.this.challengeDisplay.add(new JLabel("Game Over!"));
System.out.println("Game Over");
GamePanel.this.updateUI();
} else {
GamePanel.this.countOfWinnerHits = GamePanel.this.countOfWinnerHits + 1;
if (GamePanel.this.countOfWinnerHits == GamePanel.this.countOfPossibleHits) {
clickedObject.add(new JLabel("You won!"));
GamePanel.this.challengeDisplay.add(new JLabel("You Won!"));
GamePanel.this.updateUI();
}
}
}
}
}
package gui;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
public class MemoryGameWindow extends JFrame implements ActionListener {
private JMenuItem newgame = null;
private JMenuItem playgame = null;
private JMenuItem exit = null;
private GamePanel gamepanel = null;
private JPanel challengeDisplay;
public MemoryGameWindow() {
setTitle("memory game");
setLayout(new BorderLayout(5, 5));
add(this.challengeDisplay = new JPanel() {
}, "North");
add(this.gamepanel = new GamePanel(this.challengeDisplay));
setJMenuBar(new GameMenubar(this));
setSize(600, 600);
setLocationRelativeTo((Component)null);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
Object s = e.getSource();
if (s == this.newgame) {
remove(this.gamepanel);
remove(this.challengeDisplay);
add(this.challengeDisplay = new JPanel() {
}, "North");
add(this.gamepanel = new GamePanel(this.challengeDisplay));
this.playgame.setEnabled(true);
this.gamepanel.updateUI();
}
if (s == this.playgame) {
Color challenge = this.gamepanel.startGame();
this.challengeDisplay.setBackground(challenge);
this.playgame.setEnabled(false);
this.gamepanel.updateUI();
}
if (s == this.exit)
System.exit(0);
}
class GameMenubar extends JMenuBar {
public GameMenubar(MemoryGameWindow memoryGameWindow) {
JMenu file;
add(file = new JMenu("File"));
MemoryGameWindow.this.newgame = new JMenuItem("new board");
file.add(new JMenuItem("new board"));
MemoryGameWindow.this.playgame = new JMenuItem("play");
file.add(new JMenuItem("play"));
MemoryGameWindow.this.exit = new JMenuItem("end program");
file.add(new JMenuItem("end program"));
MemoryGameWindow.this.newgame.addActionListener(memoryGameWindow);
MemoryGameWindow.this.playgame.addActionListener(memoryGameWindow);
MemoryGameWindow.this.exit.addActionListener(memoryGameWindow);
}
}
}
这是彩色面板
import gui.MemoryGameWindow;
import gui.ColoredPanel;
import gui.GamePanel;
public class StartPlayer {
public static void main(String[] args) {
new MemoryGameWindow();
}
}
package gui;
import java.awt.Color;
import java.awt.event.MouseListener;
import javax.swing.JPanel;
public class ColoredPanel extends JPanel {
private Color thisColor = null;
private Color challenge = null;
public ColoredPanel(Color color) {
this.thisColor = color;
setBackground(color);
}
public void setGameMode(Color c, MouseListener ml) {
setBackground(Color.LIGHT_GRAY);
this.challenge = c;
System.out.println("Coloredpanel says challenge is " + this.challenge);
addMouseListener(ml);
}
public void restoreBackground() {
setBackground(this.thisColor);
}
}
package gui;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class GamePanel extends JPanel {
private Color[] colors = new Color[] { Color.GREEN, Color.YELLOW, Color.MAGENTA };
private Random r = new Random();
private int square = 9;
private Color challenge;
private int countOfPossibleHits = 0;
private int countOfWinnerHits = 0;
private JPanel challengeDisplay;
public GamePanel(JPanel cd) {
this.challengeDisplay = cd;
setLayout(new GridLayout(3, 0, 2, 2));
for (int i = 0; i < this.square; i++)
add(new ColoredPanel(this.colors[this.r.nextInt(this.colors.length)]));
}
public Color startGame() {
Color[] existingColors = new Color[getComponentCount()];
int i;
for (i = 0; i < getComponentCount(); i++)
existingColors[i] = ((ColoredPanel)getComponent(i)).getBackground();
this.challenge = existingColors[this.r.nextInt(existingColors.length)];
this.countOfPossibleHits = 0;
for (i = 0; i < getComponentCount(); i++) {
if (((ColoredPanel)getComponent(i)).getBackground() == this.challenge)
this.countOfPossibleHits++;
}
for (i = 0; i < getComponentCount(); i++)
((ColoredPanel)getComponent(i)).setGameMode(this.challenge, new TheMouselistener());
return this.challenge;
}
class TheMouselistener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
ColoredPanel clickedObject = (ColoredPanel)e.getSource();
clickedObject.restoreBackground();
if (clickedObject.getBackground() != GamePanel.this.challenge) {
clickedObject.add(new JLabel("Game Over!"));
GamePanel.this.challengeDisplay.add(new JLabel("Game Over!"));
System.out.println("Game Over");
GamePanel.this.updateUI();
} else {
GamePanel.this.countOfWinnerHits = GamePanel.this.countOfWinnerHits + 1;
if (GamePanel.this.countOfWinnerHits == GamePanel.this.countOfPossibleHits) {
clickedObject.add(new JLabel("You won!"));
GamePanel.this.challengeDisplay.add(new JLabel("You Won!"));
GamePanel.this.updateUI();
}
}
}
}
}
package gui;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
public class MemoryGameWindow extends JFrame implements ActionListener {
private JMenuItem newgame = null;
private JMenuItem playgame = null;
private JMenuItem exit = null;
private GamePanel gamepanel = null;
private JPanel challengeDisplay;
public MemoryGameWindow() {
setTitle("memory game");
setLayout(new BorderLayout(5, 5));
add(this.challengeDisplay = new JPanel() {
}, "North");
add(this.gamepanel = new GamePanel(this.challengeDisplay));
setJMenuBar(new GameMenubar(this));
setSize(600, 600);
setLocationRelativeTo((Component)null);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
Object s = e.getSource();
if (s == this.newgame) {
remove(this.gamepanel);
remove(this.challengeDisplay);
add(this.challengeDisplay = new JPanel() {
}, "North");
add(this.gamepanel = new GamePanel(this.challengeDisplay));
this.playgame.setEnabled(true);
this.gamepanel.updateUI();
}
if (s == this.playgame) {
Color challenge = this.gamepanel.startGame();
this.challengeDisplay.setBackground(challenge);
this.playgame.setEnabled(false);
this.gamepanel.updateUI();
}
if (s == this.exit)
System.exit(0);
}
class GameMenubar extends JMenuBar {
public GameMenubar(MemoryGameWindow memoryGameWindow) {
JMenu file;
add(file = new JMenu("File"));
MemoryGameWindow.this.newgame = new JMenuItem("new board");
file.add(new JMenuItem("new board"));
MemoryGameWindow.this.playgame = new JMenuItem("play");
file.add(new JMenuItem("play"));
MemoryGameWindow.this.exit = new JMenuItem("end program");
file.add(new JMenuItem("end program"));
MemoryGameWindow.this.newgame.addActionListener(memoryGameWindow);
MemoryGameWindow.this.playgame.addActionListener(memoryGameWindow);
MemoryGameWindow.this.exit.addActionListener(memoryGameWindow);
}
}
}
这是游戏面板
import gui.MemoryGameWindow;
import gui.ColoredPanel;
import gui.GamePanel;
public class StartPlayer {
public static void main(String[] args) {
new MemoryGameWindow();
}
}
package gui;
import java.awt.Color;
import java.awt.event.MouseListener;
import javax.swing.JPanel;
public class ColoredPanel extends JPanel {
private Color thisColor = null;
private Color challenge = null;
public ColoredPanel(Color color) {
this.thisColor = color;
setBackground(color);
}
public void setGameMode(Color c, MouseListener ml) {
setBackground(Color.LIGHT_GRAY);
this.challenge = c;
System.out.println("Coloredpanel says challenge is " + this.challenge);
addMouseListener(ml);
}
public void restoreBackground() {
setBackground(this.thisColor);
}
}
package gui;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class GamePanel extends JPanel {
private Color[] colors = new Color[] { Color.GREEN, Color.YELLOW, Color.MAGENTA };
private Random r = new Random();
private int square = 9;
private Color challenge;
private int countOfPossibleHits = 0;
private int countOfWinnerHits = 0;
private JPanel challengeDisplay;
public GamePanel(JPanel cd) {
this.challengeDisplay = cd;
setLayout(new GridLayout(3, 0, 2, 2));
for (int i = 0; i < this.square; i++)
add(new ColoredPanel(this.colors[this.r.nextInt(this.colors.length)]));
}
public Color startGame() {
Color[] existingColors = new Color[getComponentCount()];
int i;
for (i = 0; i < getComponentCount(); i++)
existingColors[i] = ((ColoredPanel)getComponent(i)).getBackground();
this.challenge = existingColors[this.r.nextInt(existingColors.length)];
this.countOfPossibleHits = 0;
for (i = 0; i < getComponentCount(); i++) {
if (((ColoredPanel)getComponent(i)).getBackground() == this.challenge)
this.countOfPossibleHits++;
}
for (i = 0; i < getComponentCount(); i++)
((ColoredPanel)getComponent(i)).setGameMode(this.challenge, new TheMouselistener());
return this.challenge;
}
class TheMouselistener extends MouseAdapter {
public void mousePressed(MouseEvent e) {
ColoredPanel clickedObject = (ColoredPanel)e.getSource();
clickedObject.restoreBackground();
if (clickedObject.getBackground() != GamePanel.this.challenge) {
clickedObject.add(new JLabel("Game Over!"));
GamePanel.this.challengeDisplay.add(new JLabel("Game Over!"));
System.out.println("Game Over");
GamePanel.this.updateUI();
} else {
GamePanel.this.countOfWinnerHits = GamePanel.this.countOfWinnerHits + 1;
if (GamePanel.this.countOfWinnerHits == GamePanel.this.countOfPossibleHits) {
clickedObject.add(new JLabel("You won!"));
GamePanel.this.challengeDisplay.add(new JLabel("You Won!"));
GamePanel.this.updateUI();
}
}
}
}
}
package gui;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
public class MemoryGameWindow extends JFrame implements ActionListener {
private JMenuItem newgame = null;
private JMenuItem playgame = null;
private JMenuItem exit = null;
private GamePanel gamepanel = null;
private JPanel challengeDisplay;
public MemoryGameWindow() {
setTitle("memory game");
setLayout(new BorderLayout(5, 5));
add(this.challengeDisplay = new JPanel() {
}, "North");
add(this.gamepanel = new GamePanel(this.challengeDisplay));
setJMenuBar(new GameMenubar(this));
setSize(600, 600);
setLocationRelativeTo((Component)null);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
Object s = e.getSource();
if (s == this.newgame) {
remove(this.gamepanel);
remove(this.challengeDisplay);
add(this.challengeDisplay = new JPanel() {
}, "North");
add(this.gamepanel = new GamePanel(this.challengeDisplay));
this.playgame.setEnabled(true);
this.gamepanel.updateUI();
}
if (s == this.playgame) {
Color challenge = this.gamepanel.startGame();
this.challengeDisplay.setBackground(challenge);
this.playgame.setEnabled(false);
this.gamepanel.updateUI();
}
if (s == this.exit)
System.exit(0);
}
class GameMenubar extends JMenuBar {
public GameMenubar(MemoryGameWindow memoryGameWindow) {
JMenu file;
add(file = new JMenu("File"));
MemoryGameWindow.this.newgame = new JMenuItem("new board");
file.add(new JMenuItem("new board"));
MemoryGameWindow.this.playgame = new JMenuItem("play");
file.add(new JMenuItem("play"));
MemoryGameWindow.this.exit = new JMenuItem("end program");
file.add(new JMenuItem("end program"));
MemoryGameWindow.this.newgame.addActionListener(memoryGameWindow);
MemoryGameWindow.this.playgame.addActionListener(memoryGameWindow);
MemoryGameWindow.this.exit.addActionListener(memoryGameWindow);
}
}
}
请看以下两行:
MemoryGameWindow.this.playgame = new JMenuItem("play");
file.add(new JMenuItem("play"));
首先,将playgame
的值设置为new JMenuItem。在代码的后面,您将向其添加一个ActionListener。完全正确
问题是,添加了ActionListener的JMenuItem并不是您要添加到菜单栏的内容。相反,您正在添加一个全新的JMenuItem,它没有添加ActionListeners
解决方法非常简单:
file.add(MemoryGameWindow.this.playgame);
显然,您还需要为其他菜单项执行此操作