fileaccessi.java

JAVA实现的断点续传, JAVA实现的断点续传

/*
**FileAccess.java
*/
package NetFox;
import java.io.*;


public class FileAccessI implements Serializable{


RandomAccessFile oSavedFile;
long nPos;


public FileAccessI() throws IOException
{
this("",0);
}


public FileAccessI(String sName,long nPos) throws IOException
{
oSavedFile = new RandomAccessFile(sName,"rw");
this.nPos = nPos;
oSavedFile.seek(nPos);
}


public synchronized int write(byte[] b,int nStart,int nLen)
{
int n = -1;
try{
oSavedFile.write(b,nStart,nLen);
n = nLen;
}
catch(IOException e)
{
e.printStackTrace ();
}


return n;
}


}