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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.util.regex.*;
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		String line = "foo <<VAR>> bar <<VAR>> in <<NO>>";
  13. 	    Matcher m = Pattern.compile("<<(\\w+)>>").matcher(line);
  14. 	    Map<String,String> replacements = Collections.singletonMap("VAR","REPLACEMENT");
  15. 		StringBuffer replacedLine = new StringBuffer();
  16. 		while (m.find()) {
  17.     		if (replacements.get(m.group(1)) != null)
  18. 		    	m.appendReplacement(replacedLine, replacements.get(m.group(1)));
  19. 		    else
  20. 		    	m.appendReplacement(replacedLine, m.group());
  21. 		}
  22. 		m.appendTail(replacedLine);
  23. 		System.out.println(replacedLine.toString());
  24.  
  25. 	}
  26. }
Success #stdin #stdout 0.04s 711168KB
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stdin
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Standard input is empty
stdout
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foo REPLACEMENT bar REPLACEMENT in <<NO>>
https://ideone.com/6fk84J
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
secret

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