java - wav 文件打开后无法删除，java

Question

我想要一个wav格式的声音文件(temp0x)在打开后进行编辑/删除。我使用线程来播放声音，并在完成后关闭所有流。然后主线程应该删除它，但它没有这样做。如果我不先播放声音，删除它没有问题。

这是 playSound 线程中播放声音的代码:

public void run() {
        synchronized(this){
        System.out.println("play sound: " + soundFile.getName());

        AudioFormat format;
        DataLine.Info info;

        try {
            stream = AudioSystem.getAudioInputStream(soundFile);
            format = stream.getFormat();
            info = new DataLine.Info(Clip.class, format);
            clip = (Clip) AudioSystem.getLine(info);
            clip.open(stream);
            clip.start();

        }catch(Exception ex){
            ex.printStackTrace();
        }

        while(clip.getMicrosecondLength() != clip.getMicrosecondPosition()){
        //waiting for sound to be finished  
        }

        try {
            stream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        clip.addLineListener(new LineListener() {
            public void update(LineEvent myLineEvent) {
              if (myLineEvent.getType() == LineEvent.Type.STOP)
                clip.close();
            }
          });
        soundFile = null;
        clip = null;
        stream = null;


        notify();
    }
}

这是我的主线程中的代码:

PlaySound playSound = new PlaySound(filePath);
    Thread play = new Thread(playSound);
    play.start();

    synchronized(play){
        try{
            System.out.println("Waiting for play to complete...");
            play.wait();
        }catch(InterruptedException e){
            e.printStackTrace();
        }

        System.out.println("play done");
    }

    if(new File("Sounds/Custom/temp0x.wav").delete()){
        System.out.println("deleted");
    } else
        System.out.println("cannot delete");


}

打印出来无法删除。我已经盯着它看了几个小时，并用谷歌搜索了我的 socks ，但我找不到解决方案。有人可以帮我吗？

编辑::

如果我按照建议更改 boolean 删除检查，这就是我的输出(英语:由于文件已被其他进程使用而无法访问):

java.nio.file.FileSystemException: src\Opslaan.wav: Het proces heeft geen toegang tot het bestand omdat het door een ander proces wordt gebruikt.

at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsFileSystemProvider.implDelete(Unknown Source)
at sun.nio.fs.AbstractFileSystemProvider.delete(Unknown Source)
at java.nio.file.Files.delete(Unknown Source)
at Main.main(Main.java:27)

编辑::问题似乎依赖于平台。我需要一个适用于 Windows 的解决方案。

Answer 1

Main.java

import java.lang.Thread;
import java.io.IOException;
import java.io.*;

public class Main {

    public static void main(String [] arg) {

        String filePath = "Sounds/Custom/temp0x.wav";
        PlaySound playSound = new PlaySound(filePath);
        Thread play = new Thread(playSound);
        play.start();

        synchronized(play){
        try{
            System.out.println("Waiting for play to complete...");
            play.wait();
        }catch(InterruptedException e){
            e.printStackTrace();
        }

        System.out.println("play done");
        }

        if(new File(filePath).delete()){
        System.out.println("deleted");
        } else {
        System.out.println("cannot delete");
        }
    }
}

PlaySound.java

import java.lang.Runnable;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.*;
import java.io.IOException;
import java.io.*;

public class PlaySound implements Runnable {

    File soundFile;
    Clip clip;
    AudioInputStream stream;

    public PlaySound(String file) {
        soundFile = new File(file);
    }

    public void run() {
        synchronized(this){
        System.out.println("play sound: " + soundFile.getName());

        AudioFormat format;
        DataLine.Info info;

        try {
            stream = AudioSystem.getAudioInputStream(soundFile);
            format = stream.getFormat();
            info = new DataLine.Info(Clip.class, format);
            clip = (Clip) AudioSystem.getLine(info);
            clip.open(stream);
            clip.start();

        }catch(Exception ex){
            ex.printStackTrace();
        }

        while(clip.getMicrosecondLength() != clip.getMicrosecondPosition()){
        //waiting for sound to be finished  
        }

        try {
            stream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        clip.addLineListener(new LineListener() {
            public void update(LineEvent myLineEvent) {
              if (myLineEvent.getType() == LineEvent.Type.STOP)
            clip.close();
            }
          });
        soundFile = null;
        clip = null;
        stream = null;


        notify();
      }
    }
}

执行

> javac PlaySound.java
> javac Main.java
> java Main
Waiting for play to complete...
play sound: sound.wav
play done
deleted

目录布局

.
├── Main.class
├── Main.java
├── PlaySound$1.class
├── PlaySound.class
├── PlaySound.java
└── Sounds
    └── Custom
        └── temp0x.wav

Windows7

它看起来确实像系统相关问题:)有趣。