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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		String block = "somelongpattern[0-9]";
  10. 		String final_regex = String.format("^(%1$s)([,; ]+%1$s)*$",block);
  11. 		System.out.println(final_regex);
  12. 	}
  13. }
Success #stdin #stdout 0.06s 27980KB
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Standard input is empty
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^(somelongpattern[0-9])([,; ]+somelongpattern[0-9])*$
https://ideone.com/0XHJ5o
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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