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nullPointerException using …
https://stackoverflow.com/questions/44054103/nullpointerexception-using-audiosystem-getaudioinputstream-more-than-once
The last line that calls to AudioSystem.getAudioInputStream() only works for the first iteration. All iterations happens for the same audio file and every parameter is "new" for each iteration, so I don't understand how something could be null.
java - Erro em AudioInputStream ais = AudioSystem ...
https://pt.stackoverflow.com/questions/26881/erro-em-audioinputstream-ais-audiosystem-getaudioinputstreamgetclass-getres
O caminho para o arquivo me parece errado. No fim das contas ele vai lançar um null pointer exception por não conseguir carregar os streams. Primeiramente tente utilizar um caminho completo, ex: c:/arquivo.mp3 Logo depois verifique o caminho relativo ao arquivo .mp3. Edit:
AudioSystem: getAudioInputStream(File file) : AudioSystem ...
http://www.java2s.com/Code/JavaAPI/javax.sound.sampled/AudioSystemgetAudioInputStreamFilefile.htm
AudioSystem: getAudioInputStream(File file) : AudioSystem « javax.sound.sampled « Java by API
AudioSystem - Java 11中文版 - API参考文档 - API Ref
https://www.apiref.com/java11-zh/java.desktop/javax/sound/sampled/AudioSystem.html
AudioSystem类充当采样音频系统资源的入口点。 此类允许您查询和访问系统上安装的混音器。 AudioSystem包括许多用于在不同格式之间转换音频数据以及用于在音频文件和流之间进行转换的方法。 它还提供了一种获取方法Line直接从AudioSystem而不搅拌机明确处理。. 属性可用于指定特定线型的默认混合器。
AudioSystem (Java Platform SE 7 ) - Oracle
https://docs.oracle.com/javase/7/docs/api/javax/sound/sampled/AudioSystem.html
The AudioSystem class acts as the entry point to the sampled-audio system resources. This class lets you query and access the mixers that are installed on the system. AudioSystem includes a number of methods for converting audio data between different formats, and for translating between audio files and streams. It also provides a method for obtaining a Line directly from …
AudioSystem (Java SE 17 & JDK 17) - docs.oracle.com
https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/javax/sound/sampled/AudioSystem.html
The AudioSystem class acts as the entry point to the sampled-audio system resources. This class lets you query and access the mixers that are installed on the system. AudioSystem includes a number of methods for converting audio data between different formats, and for translating between audio files and streams. It also provides a method for obtaining a Line directly from …
AudioInputStream (Java Platform SE 8 ) - Oracle
https://docs.oracle.com/javase/8/docs/api/javax/sound/sampled/AudioInputStream.html
Returns the maximum number of bytes that can be read (or skipped over) from this audio input stream without blocking. This limit applies only to the next invocation of a read or skip method for this audio input stream; the limit can vary each time these methods are invoked. Depending on the underlying stream,an IOException may be thrown if this stream is closed.
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