Re: Java String to integer conversion not working

From:
ashish.lohra@gmail.com
Newsgroups:
comp.lang.java.programmer
Date:
19 Mar 2007 15:53:26 -0700
Message-ID:
<1174344806.217057.27090@l75g2000hse.googlegroups.com>
On Mar 19, 6:19 pm, Thomas Fritsch <i.dont.like.s...@invalid.com>
wrote:

ashish.lo...@gmail.com wrote:

I'm am working on converting a String "596" (I'm reading it from a txt
file) to an integer using parseInt() however I get
NumberFormatException for the input string : "596". I tried to use
trim() method before using parseInt on the String but still doens't
work.

Also, I tried to get the length of the input string "596" which I read
from the file and the length comes out to be 7. How did that happen? I
thought the length should be 3.

Please advise.


If you have an IDE, start your application within the debugger of the
IDE. Set a breakpoint before the line where you parse the string, and
look inside your String.

If you don't have an IDE, dump out the String before you parse it:
    String s = ...; // your string
    for (int = 0; i < s.length(); i++) {
       char c = s.charAt(i);
       System.out.println("s[" + i + "] = " + (int)c + " = " + c);
    }
See what output you get.


I used the above code segment and realized that before every integer
there was a null char
so the output being:
s[0] = 0 =
s[1] = 53 = 5
s[2] = 0 =
s[3] = 54 = 6
s[4] = 0 =
s[5] = 57 = 9
s[6] = 0 =

So i just created a new string using the chars I extracted from the
above code.

Thanks for your help.

AL

--
Thomas

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