File list (Check if you may need any files):
FileDemo\BufferedReaderDemo.class
........\BufferedReaderDemo.java
........\BufferedReaderDemo.java.bak
........\ByteArrayDemo.class
........\ByteArrayDemo.java
........\ByteArrayDemo.java.bak
........\ByteArrayDemo2.class
........\ByteArrayDemo2.java
........\ByteArrayDemo2.java.bak
........\ChangeDemo.class
........\ChangeDemo.java
........\ChangeDemo.java.bak
........\ChangeDemo1.class
........\ChangeDemo1.java
........\ChangeDemo1.java.bak
........\CharSetDemo.class
........\CharSetDemo.java
........\CharSetDemo.java.bak
........\CharSetDemo1.class
........\CharSetDemo1.java
........\CharSetDemo1.java.bak
........\CopyDemo.class
........\CopyDemo.java
........\CopyDemo.java.bak
........\DataInputStreamDemo.class
........\DataInputStreamDemo.java
........\DataInputStreamDemo.java.bak
........\DataOutputStreamDemo.class
........\DataOutputStreamDemo.java
........\DataOutputStreamDemo.java.bak
........\FileDemo1 - 副本.java
........\FileDemo1.class
........\FileDemo1.java
........\FileDemo1.java.bak
........\FileDemo10.class
........\FileDemo10.java
........\FileDemo10.java.bak
........\FileDemo11.class
........\FileDemo11.java
........\FileDemo11.java.bak
........\FileDemo2.class
........\FileDemo2.java
........\FileDemo2.java.bak
........\FileDemo3.class
........\FileDemo3.java
........\FileDemo3.java.bak
........\FileDemo4.class
........\FileDemo4.java
........\FileDemo4.java.bak
........\FileDemo5.class
........\FileDemo5.java
........\FileDemo5.java.bak
........\FileDemo6.class
........\FileDemo6.java
........\FileDemo6.java.bak
........\FileDemo7.class
........\FileDemo7.java
........\FileDemo7.java.bak
........\FileDemo8.class
........\FileDemo8.java
........\FileDemo8.java.bak
........\FileDemo9.class
........\FileDemo9.java
........\FileDemo9.java.bak
........\FileReaderDemo.class
........\FileReaderDemo.java
........\FileReaderDemo.java.bak
........\FileReaderDemo1.class
........\FileReaderDemo1.java
........\FileReaderDemo1.java.bak
........\FileWriter.java.bak
........\FileWriterDemo1.class
........\FileWriterDemo1.java
........\FileWriterDemo1.java.bak
........\FileWriterDemo11.class
........\FileWriterDemo11.java
........\FileWriterDemo11.java.bak
........\FileWriterDemo2.class
........\FileWriterDemo2.java
........\FileWriterDemo2.java.bak
........\InputData.class
........\InputData.java
........\InputData.java.bak
........\InputData1.class
........\InputData1.java
........\InputData1.java.bak
........\InputData2.java
........\InputStreamDemo.class
........\InputStreamDemo.java
........\InputStreamDemo.java.bak
........\InputStreamDemo1.class
........\InputStreamDemo1.java
........\InputStreamDemo1.java.bak
........\InputStreamDemo2.class
........\InputStreamDemo2.java
........\InputStreamDemo2.java.bak
........\InputStreamDemo3.class
........\InputStreamDemo3.java
........\InputStreamDemo3.java.bak
........\InputStreamDemo4.class