java - FileNotFoundException while file exists in same folder as program -

java - FileNotFoundException while file exists in same folder as program -

similar questions deal files on c: drive, hardcoding file path acceptable answer. application mobile, , hardcoding file path not practical.

i trying import text file via scanner, contains list of strings, 15 characters each, 1 per line. lots of lines. file name a.txt.

i phone call using

file info = new file("a.txt"); scanner in = new scanner(data);

repeated lines below "b.txt", using different object names.

however, when build program, error log (using jcreator ide):

--------------------configuration: <default>-------------------- e:\simple encryption\simple_encryption.java:17: unreported exception java.io.filenotfoundexception; must caught or declared thrown scanner in = new scanner(data); ^ e:\simple encryption\simple_encryption.java:18: unreported exception java.io.filenotfoundexception; must caught or declared thrown scanner numsin = new scanner(nums); ^ 2 errors process completed.

the programme in folder e:/simple encryption/, contains next files , folders:

simple_encryption.java simple_encryption.class lock.png (unused) a.txt b.txt (same error a.txt on import, 1 line below) /images (folder, contains icon.png)

there nil else in folder. cannot hardcode file path because on different computers, has different drive names, , distributed under different folders later. (here (school), it's on e: drive, @ home it's j:drive, , @ work it's on g: drive.)

although have gotten help existing errors, need import on programme startup, , not skip it. file exists in it's current form, , programme cannot function without it.

what causing error? , can prevent this?

e:\simple encryption\simple_encryption.java:17: unreported exception java.io.filenotfoundexception; must caught or declared thrown

as exception saying need utilize try- grab block

try { scanner numsin = new scanner(nums); grab (filenotfoundexception e) { // } { if (numsin != null) numsin .close(); }

or

you need throw exception though calling method

public static void xxxx() throws filenotfoundexception { // }

java java.util.scanner filenotfoundexception