Java 尝试播放音频剪辑时出现NullPointerException
我制作了下面给出的类来实现游戏的“绘制”,并在其中播放声音。执行时,我得到以下错误:Java 尝试播放音频剪辑时出现NullPointerException,java,audio,Java,Audio,我制作了下面给出的类来实现游戏的“绘制”,并在其中播放声音。执行时,我得到以下错误: java.lang.NullPointerException at sun.applet.AppletAudioClip.<init>(AppletAudioClip.java:65) at java.applet.Applet.newAudioClip(Applet.java:311) at AllPanels.Sound.<init>(Sound.java:2
java.lang.NullPointerException
at sun.applet.AppletAudioClip.<init>(AppletAudioClip.java:65)
at java.applet.Applet.newAudioClip(Applet.java:311)
at AllPanels.Sound.<init>(Sound.java:20)
at AllPanels.Sound.<clinit>(Sound.java:15)
at AllPanels.BailoutGame.mousePressed(BailoutGame.java:124)
at java.awt.Component.processMouseEvent(Component.java:6502)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Window.processEvent(Window.java:2022)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:696)
at java.awt.EventQueue$4.run(EventQueue.java:694)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
//游戏类-平局游戏
package AllPanels;
import java.awt.*;
import java.awt.event.*;
public class BailoutGame extends Core implements MouseListener, MouseMotionListener, KeyListener {
public static void main(String args[]) {
(new Thread(new BailoutGame())).start();
}
//Variables
@Override
public void init(){
super.init();
Window w = s.getFullScreenWindow();
w.addKeyListener(this);
w.addMouseListener(this);
w.addMouseMotionListener(this);
}
@Override
public synchronized void draw(Graphics2D g) {
//some code
}
@Override
public void mouseReleased(MouseEvent e) { }
@Override
public void mouseClicked(MouseEvent e) { }
@Override
public void mouseEntered(MouseEvent e) { }
@Override
public void mouseExited(MouseEvent e) { }
@Override
public void mouseDragged(MouseEvent e) { }
@Override
public void keyTyped(KeyEvent e) { }
@Override
public void keyReleased(KeyEvent e) { }
@Override
public void mousePressed(MouseEvent e) {
if((e.getButton() == MouseEvent.BUTTON1) && bulletsInClip != 0){
Sound.fire.play();
//some Code
}
if(e.getButton() == MouseEvent.BUTTON3){
reload();
}
}
@Override
public void mouseMoved(MouseEvent e) {
//some Code
}
@Override
public void keyPressed(KeyEvent e) {
//some Code
}
}
我强烈怀疑
getResource(filename)
正在返回null
请注意,Class.getResource
不采用完整的文件名-它采用相对于类或类加载器根的资源名。试试这个:
public static final Sound fire = new Sound("/Sounds/50 Cal.wav");
假设
Sounds
目录嵌入到资源中,并将src
作为资源根,那么应该可以工作。我强烈怀疑getResource(filename)
正在返回null
请注意,Class.getResource
不采用完整的文件名-它采用相对于类或类加载器根的资源名。试试这个:
public static final Sound fire = new Sound("/Sounds/50 Cal.wav");
假设
Sounds
目录嵌入到资源中,并以src
作为资源根目录,这应该可以工作。要更快地获得更好的帮助,请发布一个。要更快地获得更好的帮助,请发布一个。嘿,Jon,我尝试了上面的方法。。class.getResource()现在返回文件名。。谢谢你!但是声音仍然无法播放!!嘿,乔恩,我试过上面的。。class.getResource()现在返回文件名。。谢谢你!但是声音仍然无法播放!!帮助