Java中如何实现声音的录制与播放

在Java中实现声音的录制与播放可以使用JavaSound API。以下是一个简单的示例代码：

录制声音：

import javax.sound.sampled.*;

public class AudioRecorder {

    public static void main(String[] args) {
        try {
            AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100, 16, 2, 4, 44100, false);
            DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
            TargetDataLine line = (TargetDataLine) AudioSystem.getLine(info);
            line.open(format);
            line.start();

            AudioInputStream ais = new AudioInputStream(line);

            AudioSystem.write(ais, AudioFileFormat.Type.WAVE, new File("audio.wav"));

            line.stop();
            line.close();

        } catch (LineUnavailableException | IOException e) {
            e.printStackTrace();
        }
    }
}

播放声音：

import javax.sound.sampled.*;

public class AudioPlayer {

    public static void main(String[] args) {
        try {
            AudioInputStream ais = AudioSystem.getAudioInputStream(new File("audio.wav"));

            AudioFormat format = ais.getFormat();
            DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
            SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info);

            line.open(format);
            line.start();

            byte[] data = new byte[1024];
            int bytesRead = 0;

            while ((bytesRead = ais.read(data, 0, data.length)) != -1) {
                line.write(data, 0, bytesRead);
            }

            line.drain();
            line.close();

        } catch (UnsupportedAudioFileException | LineUnavailableException | IOException e) {
            e.printStackTrace();
        }
    }
}

在上面的示例代码中，AudioRecorder类实现了声音的录制，将录制的声音保存为一个WAV文件；AudioPlayer类实现了声音的播放，从录制的WAV文件中读取声音数据并进行播放。