我试图创建一个 UTF-16 编码文件的 SequenceStream。
public class sequenceStream {
public static void main(String[] args) {
try {
File f1 = new File("C:\\Temp\\sequence1.txt");
File f2= new File("C:\\Temp\\sequence2.txt");
File f3= new File("C:\\Temp\\sequence3.txt");
InputStream is = getSequencedInputStream(f1,f2,f3);
BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-16"));
String line;
int count=0;
while((line = br.readLine()) !=null){
count++;
System.out.println(count + " : " + line);
}
br.close();
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
}
private static InputStream getSequencedInputStream(File ... files) {
Vector v = new Vector(files.length);
for (int i=0; i<files.length;i++){
if(files[i].exists()){
try {
v.add(new FileInputStream(files[i]));
} catch (FileNotFoundException e) {
}
}
}
return new SequenceInputStream(v.elements());
}
}
如果我运行这个，我得到这个作为输出：
1 : first file, first line
2 : first file, second line?second file, first line
3 : second file, second line?third file, first line
4 : third file, second line
如果我运行它，只有一个文件它工作正常：
InputStream is = getSequencedInputStream(f1);
输出：
1 : first file, first line
2 : first file, second line
问号从哪里来？我该如何处理？