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Java in General
Removing zeros in front of a string
igwe kalu kalu ogba
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Posts: 133
posted 18 years ago
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Hi, I have a question:
I'm retrieving values from a database and getting a number like 23 outputted as 00000024, It varies.
My question is, how can I remove the first x zeros from a number. Can any of the numberformat tools help? Thanks.
Cathy Song
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Posts: 92
posted 18 years ago
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Something like this perhaps?
class a{
public static void main (
String
args[]){
String
test
= "0000024";
Integer i = new Integer (test);
System.out.println (i);
int num = i.intValue();
System.out.println (num);
}
}
Stefan Wagner
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Posts: 1923
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posted 18 years ago
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I guess he means only to suppress some of the Zeros:
000000042
....00042 (x=4).
printf or regexp could help:
public void printfTrim (String number, int x) { int len = number.length () - x; String formatString = "Number %1$s with %2$d 0s suppressed: %3$0" + len + "d\n"; int value = Integer.parseInt (number); System.out.printf (formatString, number, x, value); } public void regexTrim (String number, int x) { String trun = number.replaceAll ("\\b0{" + x + "}", ""); System.out.println ("Number " + number +" with " + x + " 0s suppressed: " + trunc); }
[ August 04, 2005: Message edited by: Stefan Wagner ]
[ August 04, 2005: Message edited by: Stefan Wagner ]
[ August 04, 2005: Message edited by: Stefan Wagner ]
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Dharmesh Gangani
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Posts: 30
posted 18 years ago
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You can get the data truncated from the database query as well. this removes a few lines of code.
Eg. If you want to truncate the value from the database to say 2 leading zeros' (0024), u can use the database query as -
select to_char(<col_name>, '0099') from <table_name>
The tow 0's indicate the number of leading zero's required & the 9's indicate the fixed number of digits required.
Hope this solves your purpose.
In case you have any further queries, please feel free to ask.
-=-=-=-=-=-=-=-=-=-<br />Thanks & Regards,<br />Dharmesh G.
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