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Hi, 
 
Goal: prefix each number in a string with 1-5 zeros depending on the number 
e.g. if it's less than 10 then prepend 4 zeros, if it's two digits then prefix three zeros. 
This basically prefixes each number with zeros so each number is 5 digits. 
 
Source 
String str = &quot;1 - test 86&quot;; 
 
Desired Result: 
String str = &quot;00001 - test 00086&quot;; 
 
I've tried this but this adds zeros to every number 
str = str .replaceAll(&quot;(\\d+)&quot;, &quot;00000$1&quot;); 
 
any ideas?
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Hi,

Goal: prefix each number in a string with 1-5 zeros depending on the number 
e.g. if it's less than 10 then prepend 4 zeros, if it's two digits then prefix three zeros.
This basically prefixes each number with zeros so each number is 5 digits.

Source
String str = "1 - test 86";

Desired Result:
String str = "00001 - test 00086";

I've tried this but this adds zeros to every number
str = str .replaceAll("(\\d+)", "00000$1");

any ideas?

java regular expression callback ?

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.

Java

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.