java - EOFexception caused by empty file -

i created new file roomchecker empty. when read it, throws me eofexception undesirable. instead want see that, if file empty run other 2 functions in if(roomfeed.size() == 0) condition. write statement in eofexception catch clause; that's not want because every time when file read , reaches end of file execute functions. instead when file has data should specified in else.

file filechecker = new file("roomchecker.ser"); if(!filechecker.exists()) {     try {         filechecker.createnewfile();     } catch (ioexception e) {         e.printstacktrace();         system.out.println("unable create new file");     } }  try(fileinputstream fis = new fileinputstream("roomchecker.ser"); objectinputstream ois = new objectinputstream(fis)) {     roomfeed = (list<roomchecker>) ois.readobject();     system.out.println("end of read");     if(roomfeed.size() == 0) {         system.out.println("your in null if statement");         defaultroomlist();         uploadavailablerooms();     } else {         for(int i=0; i<roomnumber.size(); i++) {             for(int j=0; j<roomfeed.size(); i++) {                 if((roomnumber.get(i)).equals(roomfeed.get(i).getroomnumsearch())){                     system.out.println("reach dead end now");                 } else {                     defaultroomlist();                     uploadavailablerooms();                 }             }         }     } } catch (ioexception ioe) {     ioe.printstacktrace(); } catch (classnotfoundexception e) {     e.printstacktrace(); } 

all this:

if(!filechecker.exists()) {     try {         filechecker.createnewfile();     } catch (ioexception e) {         e.printstacktrace();         system.out.println("unable create new file");     } } 

is complete waste of time, , 1 of 2 possible causes empty file problem. creating file can open , different problem instead of coping correctly original problem of file not being there isn't rational strategy. instead, should this:

if (filechecker.isfile() && filechecker.length() == 0) {     // file 0 length: bail out } 

and, in following code, this:

try(fileinputstream fis = new fileinputstream(filechecker); objectinputstream ois = new objectinputstream(fis)) {     // ... } catch (filenotfoundexception exc) {     // no such file ... } // other catch blocks before. 

of course can still eofexception if read file end, or if file incomplete, , still need handle that.