嗨，我有问题时，试图使用数组读取图像文件名被分配给图像图标的数组。它编译得很好，但当我启动应用程序的图像似乎没有出现。有人能看出我在这里做的有什么问题吗?如果你觉得有必要对节目中的其他内容提出批评，我愿意接受建议。提前感谢!
public class PokerStats extends JFrame
{
private static final String [] names = {"First Name","Surname","Nickname",
"Address1","Address2","Address3",
"Nationality","Hands Played",
"Hands Won","Total $ Won","Age"};
private static final String [] imageNames = {"continue1.png","continue2.png",
"store1.png","store2.png",
"reset1.png","reset2.png",
"exit1.png","exit2.png"};
private static final JLabel [] labels = new JLabel [names.length];
private static final JTextField [] textFields = new JTextField [names.length];
private static final JButton [] buttons = new JButton [4];
private static final ImageIcon [] icons = new ImageIcon [imageNames.length];
private static final Image img = new ImageIcon("poker.jpg").getImage();
private static final Dimension size = new Dimension(img.getWidth(null), img.getHeight(null));
private static final Font f3= new Font("Bell MT",Font.PLAIN,16);
private static final JButton button1 = new JButton (icons[3]);
private static final JButton button2 = new JButton (icons[5]);
private static final JButton button3 = new JButton(icons[6]);
private static final JButton button4 = new JButton(icons[0]);
public PokerStats() //creates a default constructor
{
setLayout
(
new FlowLayout()
);
}
public PokerStats (String title) // single argument constructor
{
super(title); //calls on the superclass "JFrame" and sets the frame title
//as the string passed in from the main method
JPanel background = new JPanel() //creates a JPanel called background
{
public void paintComponent(Graphics g) //overrides Jpanel Graphics to set a custom background
{
setPreferredSize(size);
setSize(size);
setLayout(null);
g.drawImage(img, 0, 0, null);
}
};
for(int count=0; count<names.length; count++) // loop used to create labels and textFields
{
//creates JLables and sets their attributes
labels[count] = new JLabel(names[count]);
labels[count].setVisible(false);
labels[count].setForeground(Color.WHITE);
labels[count].setFont(f3);
background.add(labels[count]);
//creates JTextFields and adds them to the panel
textFields[count] = new JTextField("");
textFields[count].setVisible(false);
background.add(textFields[count]);
}
for(int count=0; count<imageNames.length; count++) // loop used to create labels and textFields
{
//creates JLables and sets their attributes
icons[count] = new ImageIcon(imageNames[count]);
}
background.setLayout (null);
button1.setToolTipText("Submit Details");
button1.setRolloverIcon(icons[2]);
button1.setVisible(false);
button1.setBackground(Color.BLACK);
button1.setBorder(null);
button2.setToolTipText("Refresh Fields");
button2.setVisible(false);
button2.setRolloverIcon(icons[4]);
button2.setBackground(Color.BLACK);
button2.setBorder(null);
button2.setOpaque(true);
button3.setToolTipText("Exit Program");
button3.setRolloverIcon(icons[7]);
button3.setVisible(true);
button3.setBorder(null);
button3.setBackground(Color.BLACK);
button4.setToolTipText("Continue");
button4.setVisible(true);
button4.setOpaque(true);
button4.setBackground(Color.BLACK);
button4.setBorder(null);
button4.setRolloverIcon(icons[1]);
button1.setBounds(540,440,95,40);
button2.setBounds(650,440,95,40);
button3.setBounds(955,577,59,59);
button4.setBounds(420,490,210,70);
labels[0].setBounds(220,240,110,20);
labels[1].setBounds(220,280,110,20);
labels[2].setBounds(220,320,110,20);
labels[3].setBounds(220,360,110,20);
labels[4].setBounds(220,400,110,20);
labels[5].setBounds(220,440,110,20);
labels[6].setBounds(540,240,110,20);
labels[7].setBounds(540,280,110,20);
labels[8].setBounds(540,320,110,20);
labels[9].setBounds(540,360,110,20);
labels[10].setBounds(540,400,110,20);
textFields[0].setBounds(320,240,180,20);
textFields[1].setBounds(320,280,180,20);
textFields[2].setBounds(320,320,180,20);
textFields[3].setBounds(320,360,180,20);
textFields[4].setBounds(320,400,180,20);
textFields[5].setBounds(320,440,180,20);
textFields[6].setBounds(660,240,150,20);
textFields[7].setBounds(660,280,110,20);
textFields[8].setBounds(660,320,110,20);
textFields[9].setBounds(660,360,110,20);
textFields[10].setBounds(590,400,40,20);
background.add(button1);
background.add(button2);
background.add(button3);
background.add(button4);
getContentPane().add(background);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
button1.addActionListener
(
new ActionListener () //anonymous inner class
{
public void actionPerformed (ActionEvent e)
{
String output;
output = textFields[0].getText() + " " + textFields[1].getText() + " " + textFields[2].getText() + " " +
textFields[3].getText() + " " + textFields[4].getText() + " " + textFields[5].getText() + " " +
textFields[6].getText() + " " + textFields[7].getText() + " " + textFields[8].getText() + " " +
textFields[9].getText() + " " + textFields[10].getText();
try
{
BufferedWriter out = new BufferedWriter(new FileWriter("PlayerData.txt", true));
out.write(output);
out.newLine();
out.close();
JOptionPane.showMessageDialog(null, "Your Details Have Been Stored Sucessfully");
resetFields();
}
catch(IOException e2) // Exception Handler
{
JOptionPane.showMessageDialog(null, "There has been an error writing to file");
}
}//ends ActionEvent
} //ends ActionListener
); //ends anonymous inner class
button2.addActionListener
(
new ActionListener() //anonymous inner class
{
public void actionPerformed(ActionEvent e)
{
resetFields(); //calls resetFields method to clear TextFields
}
}
); //ends anonymous inner class
button3.addActionListener
(
new ActionListener () //anonymous inner class
{
public void actionPerformed (ActionEvent e)
{
System.exit(0);
setVisible(false);
}
}
);//ends anonymous inner class
button4.addActionListener
(
new ActionListener() //anonymous inner class
{
public void actionPerformed(ActionEvent e)
{
for(int count=0; count<names.length; count++)
{
labels[count].setVisible(true);
textFields[count].setVisible(true);
}
button1.setVisible(true);
button2.setVisible(true);
button4.setVisible(false);
}
}
); //ends anonymous inner class
}//end single argument constructor
public void resetFields () //a method used to reset the textFields to an empty state
{
for(int count=0; count<names.length; count++)
{
textFields[count].setText(""); //all textFields are cleared through the for loop
}
}//ends resetFields method
}//end of PokerStats class
您是否尝试使用图像的完整路径?问题很可能是您提供的单个文件名("continue1.png"，"continue2.png"等)不是类的可用资源。如果完整路径有效，那么您可能可以找到正确的相对路径("images/continue1.png"等)。
目前的期望是，这些图像是在相同的构建文件夹中，你的类，这是不正常的。如果您正在构建一个war文件(或其他类型的存档)，而不仅仅是使用简单的java执行，请记住，图像可能不在您期望的位置，您应该检查构建的war文件。