NumberFormatException error

[lostinjava]

When I run my program, in the black box I get:

Exception in thread "main" java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:394)
at java.lang.Integer.parseInt(Integer.java:476)
at J2.main(J2.java:59)



Line 59 of my program is:
lineone=Integer.parseInt(line);
"lineone" is an int and "line" is a string

any suggestions on what to do? if you have any, i would really appreciate the help, though i am very new with programming and dont know all the technical language

thanks

 

[Hattusas]

There seems to be a problem in the value of "line" variable.
I suggest writing its value before parsing it into int.
System.out.println("value -->"+line);
There must be something wrong in that value.
Salih Sipahi
Software Engineer.
City of Istanbul Turkey
ssipahi@yonbilgi.com