RandomAccessFile asdf=new RandomAccessFile("d:\\test.zip","rw");
byte b[]=new byte[10];
long ll_length,index=1;
ll_length=asdf.length()-10;
asdf.seek(ll_length-1000);
byte b[]=new byte[10];
long ll_length,index=1;
ll_length=asdf.length()-10;
asdf.seek(ll_length-1000);
那第二个问题呢?