应用错误收集

我正在使用Java进行单人纸牌游戏，我需要在桌面洗牌，卡片翻转等时实现声音。我使用以下网站作为参考尝试让它工作，但我得到了Null指针异常或错误处理的URL异常（取决于我调整的内容） here
另外，我使用netbeans 6.7.1作为我的IDE 我将尝试分解代码并解释：


package cardgame;

import java.applet.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JApplet;
import javax.swing.*;
import java.io.*;
import java.net.*;

/**
 *
 * @author jacob
 */
public class Sound extends JApplet {

    private AudioClip song; // Sound player
    private String URL = null;
    private URL songPath; // Sound path
    /*
     *sound_1 =  shuffling cards
     *sound_2 = to discard
     *sound_3 =  from discard
     *sound_4 = cardflip 1
     *sound_5 = cardflip 2
     */

    Sound(String filename) {
        try {
           songPath = new URL(getCodeBase(),filename); // Get the Sound URL
        } catch (MalformedURLException ex) {
            Logger.getLogger(Sound.class.getName()).log(Level.SEVERE, null, ex);
        }
        song = getAudioClip(songPath); // Load the Sound
    }
    Sound(int i) {
        URL = "./sounds/sound_" + i + ".wav";
        System.out.println(URL);
        try {
            songPath = new URL(URL); // Get the Sound URL
            song = getAudioClip(songPath);
        } catch (MalformedURLException ex) {
            Logger.getLogger(Sound.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public void playSound() {
        song.loop(); // Play
    }

    public void stopSound() {
        song.stop(); // Stop
    }

    public void playSoundOnce() {
        song.play(); // Play only once
    }
}

我尝试实现这两种不同的构造方法。第一个创建文件路径，并将其传入。第二个在构造函数中构建文件路径，给出声音＃（我列出了哪些数字对应于什么声音以供参考）。我收到了以下错误：

./sounds/sound_1.wav
Nov 16, 2009 4:14:13 PM cardgame.Sound 
./sounds/sound_2.wav
SEVERE: null
java.net.MalformedURLException: no protocol: ./sounds/sound_1.wav
./sounds/sound_3.wav
        at java.net.URL.(URL.java:583)
        at java.net.URL.(URL.java:480)
        at java.net.URL.(URL.java:429)
./sounds/sound_4.wav
./sounds/sound_5.wav
        at cardgame.Sound.(Sound.java:46)
        at cardgame.Game.loadSounds(Game.java:712)
        at cardgame.Game.(Game.java:62)
        at cardgame.Main.main(Main.java:25)
Nov 16, 2009 4:14:13 PM cardgame.Sound 
SEVERE: null
java.net.MalformedURLException: no protocol: ./sounds/sound_2.wav
        at java.net.URL.(URL.java:583)
        at java.net.URL.(URL.java:480)
        at java.net.URL.(URL.java:429)
        at cardgame.Sound.(Sound.java:46)
        at cardgame.Game.loadSounds(Game.java:712)
        at cardgame.Game.(Game.java:62)
        at cardgame.Main.main(Main.java:25)
Nov 16, 2009 4:14:13 PM cardgame.Sound 
SEVERE: null
java.net.MalformedURLException: no protocol: ./sounds/sound_3.wav
        at java.net.URL.(URL.java:583)
        at java.net.URL.(URL.java:480)
        at java.net.URL.(URL.java:429)
        at cardgame.Sound.(Sound.java:46)
        at cardgame.Game.loadSounds(Game.java:712)
        at cardgame.Game.(Game.java:62)
        at cardgame.Main.main(Main.java:25)
Nov 16, 2009 4:14:13 PM cardgame.Sound 
SEVERE: null
java.net.MalformedURLException: no protocol: ./sounds/sound_4.wav
        at java.net.URL.(URL.java:583)
        at java.net.URL.(URL.java:480)
        at java.net.URL.(URL.java:429)
        at cardgame.Sound.(Sound.java:46)
        at cardgame.Game.loadSounds(Game.java:712)
        at cardgame.Game.(Game.java:62)
        at cardgame.Main.main(Main.java:25)
Nov 16, 2009 4:14:13 PM cardgame.Sound 
SEVERE: null
java.net.MalformedURLException: no protocol: ./sounds/sound_5.wav
        at java.net.URL.(URL.java:583)
        at java.net.URL.(URL.java:480)
        at java.net.URL.(URL.java:429)
        at cardgame.Sound.(Sound.java:46)
        at cardgame.Game.loadSounds(Game.java:712)
        at cardgame.Game.(Game.java:62)
        at cardgame.Main.main(Main.java:25)

感谢那些阅读并感谢那些帮助的人。我知道它有点长，但我宁愿把它全部拿出来，而不是因为缺乏初始信息而有50个问题回来或让人们不回答。也只允许我现在发布一个链接，所以链接在下面给出

dreamincode.net/forums/showtopic14083.htm
stackoverflow.com/questions/512436/java-playing-wav-sounds
deitel.com/articles/java_tutorials/20060422/LoadingPlayingAudioClips/index.html

在JApplet中需要一点声音帮助

1 个答案: