我已经尝试了几天才能将这张名为star1.png的图像显示出来。我试图从我的棍子男人“射击”它，但我甚至无法让图像显示出来。任何帮助将不胜感激。感谢
package my.testing1;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
/**
*
* @author Jamie
*/
public class GUI extends javax.swing.JFrame
{
JLabel label = new JLabel(new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman.png"));
JLabel cords = new JLabel();
JLabel bg = new JLabel(new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\background.png"));
JLabel star = new JLabel(new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\star1.png"));
int locx = 0;
int locy = 0;
int i = 0;
int x = label.getX();
int y = label.getY();
String cor= Integer.toString(x) +" "+ Integer.toString(y);
boolean ph = true;
boolean left = true;
boolean Sph = true;
public GUI()
{
this.setSize(800,600);
this.cords.setText(cor);
label.setBounds(x,y,120,120);
cords.setBounds(20,170,50,50);
bg.setBounds(0,0,800,600);
//star.setBounds(x,y,50,50);
cor= Integer.toString(x) + " "+ Integer.toString(y);
label.addKeyListener(new KeyAdapter()
{
@Override
public void keyPressed(KeyEvent ke)
{
if (ke.getKeyCode() == KeyEvent.VK_S)
{
//locx=label.getX();
//locy=label.getY();
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\star1.png");
star.setIcon(newIcon);
star.setLocation(300,300);
}
if(ke.getKeyCode() == KeyEvent.VK_DOWN)
{
if (y>0 | y==0)
{
y=y+10;
}
if (y>440)
{
y=y-10;
}
label.setLocation(x,y);
if(ph == false)
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2Left.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2.png");
label.setIcon(newIcon);
}
ph = true;
}
else
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickmanLeft.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman.png");
label.setIcon(newIcon);
}
ph = false;
}
repaint();
cords.setLocation(20,170);
cor= Integer.toString(x) + " "+Integer.toString(y);
cords.setText(cor);
}
if(ke.getKeyCode() == KeyEvent.VK_UP)
{
if (y>440 | y>0)
{
y=y-10;
}
if (y<0)
{
y=y+10;
}
label.setLocation(x,y);
if(ph == false)
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2Left.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2.png");
label.setIcon(newIcon);
}
ph = true;
}
else
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickmanLeft.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman.png");
label.setIcon(newIcon);
}
ph = false;
}
repaint();
cords.setLocation(20,170);
cor= Integer.toString(x) +" "+ Integer.toString(y);
cords.setText(cor);
}
if(ke.getKeyCode() == KeyEvent.VK_LEFT)
{
if (x<0)
{
x=x+10;
}
if (x>0)
{
x=x-10;
}
label.setLocation(x,y);
left=true;
if(ph == false)
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2Left.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2.png");
label.setIcon(newIcon);
}
ph = true;
}
else
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickmanLeft.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman.png");
label.setIcon(newIcon);
}
ph = false;
}
repaint();
cords.setLocation(20,170);
cor= Integer.toString(x) + " "+Integer.toString(y);
cords.setText(cor);
}
if(ke.getKeyCode() == KeyEvent.VK_RIGHT)
{
if (x<690)
{
x=x+10;
}
if (x>690)
{
x=x-10;
}
label.setLocation(x,y);
left=false;
if(ph == false)
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2Left.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman2.png");
label.setIcon(newIcon);
}
ph = true;
}
else
{
if(left == true)
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickmanLeft.png");
//newIcon.getImage().flush();
label.setIcon(newIcon);
}
else
{
ImageIcon newIcon = new ImageIcon("C:\\Users\\Jamie\\Desktop\\Java\\stickman.png");
label.setIcon(newIcon);
}
ph = false;
}
repaint();
cords.setLocation(20,170);
cor= Integer.toString(x) + " "+Integer.toString(y);
cords.setText(cor);
}
//System.out.println(x+y);
}
});
label.addMouseListener(new MouseAdapter()
{
//@Override
public void mouseClicked(MouseEvent me)
{
if(me.getClickCount() == 1)
{
boolean dd = label.isOptimizedDrawingEnabled();
boolean ff = label.requestFocusInWindow();
repaint();
}
}
});
JPanel p = new JPanel();
p.setSize(700,700);
this.setDefaultCloseOperation(GUI.EXIT_ON_CLOSE );
p.add(cords);
p.setLayout(null);
p.add(label);
p.add(bg);
p.add(star);
JScrollPane js = new JScrollPane(p);
getContentPane().add(js);
}
/**
* Creates new form GUI
*/
/*public GUI() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setAlwaysOnTop(true);
setBackground(new java.awt.Color(0, 102, 0));
setBounds(new java.awt.Rectangle(10, 10, 700, 700));
setPreferredSize(new java.awt.Dimension(700, 700));
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 604, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 376, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(GUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(GUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(GUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(GUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
GUI frame = new GUI();
new GUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
// End of variables declaration
}
答案 0 :(得分：1)
按下某个键时未触发KeyAdapter。
只需更换：
label.addKeyListener(new KeyAdapter()
使用：
addKeyListener(new KeyAdapter()
GUI()构造函数中，以便框架处理KeyEvent而不是JLabel。
答案 1 :(得分：1)
此后你会自杀，但这是你的问题
p.add(label);
p.add(bg);
p.add(star);
p.add(label);
p.add(star);
p.add(bg);
（或者如果您希望它们在共享位置时显示在其上方，则在标签前添加星号。）
顺便说一下，你可以写很多东西，而不是与你的问题有关。如果你想我可以发布它们。