java 声音问题

[xiaoshu97]

public class Test {

private static final AudioFormat PLAYBACK_FORMAT =
new AudioFormat(11025, 16, 1, true, false);
public static void main(String[] args) {

DataLine.Info lineInfo = new DataLine.Info(
SourceDataLine.class, PLAYBACK_FORMAT);
Mixer mixer = AudioSystem.getMixer(null);
int temp = mixer.getMaxLines(lineInfo);
System.out.println(temp);
}
}

为什么以上代码在jdk1。4输出为32
在jdk1。5就为-1了呢？？？？？？？？？？？？？？？？

[xiaoshu97]

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.SourceDataLine;

导入包，忘了