import java.io.*;class _{static{int i;try{Reader r=new FileReader("X");for(;(i=r.read())>0;System.out.print((char)i));}catch(Exception e){}try{Writer w=new FileWriter("X");for(;(i=System.in.read())>0;)w.write(i);w.close();}catch(Exception x){}}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).