Java I'；m无法将TargetDataLine强制转换为行

下面的程序我已经通过麦克风录制了5秒，然后它会自动重播。但是，将TargetDataLine强制转换为Audio.getLine（）时出现错误。任何帮助都是非常感激的

public class Audio3 {

public static void main(String[] args) throws LineUnavailableException, InterruptedException {
    
    AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100, 16, 2, 4, 44100, false);
    
    DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
    final SourceDataLine sourceLine = (SourceDataLine)AudioSystem.getLine(info);
    sourceLine.open();
    
    info = new DataLine.Info(SourceDataLine.class, format);
    final TargetDataLine targetLine = (TargetDataLine) AudioSystem.getLine(info);
    targetLine.open();
    
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    
    Thread sourceThread = new Thread() {
        
        @Override
        public void run() {
            sourceLine.start();
            
            while(true) {
                //out.size() also works fine
                sourceLine.write(out.toByteArray(), 0, out.toByteArray().length);
            }
        }
    };
    
    
    Thread targetThread = new Thread() {
        
        @Override
        public void run() {
            targetLine.start();
            byte[] data = new byte[targetLine.getBufferSize() / 5];
            int readBytes;
            
            while(true) {
                readBytes = targetLine.read(data, 0, data.length);
                out.write(data, 0, readBytes);
            }
        }
    };

}
}

---

将

SourceDataLine.class

更改为

TargetDataLine.class

：

info=newdataline.info（TargetDataLine.class，格式）；//改变
最终TargetDataLine targetLine=（TargetDataLine）AudioSystem.getLine（info）；
targetLine.open（）；