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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4. import java.util.regex.*;
  5.  
  6. class Ideone
  7. {
  8. 	public static void main (String[] args) throws java.lang.Exception
  9. 	{
  10. 		String s = "${abc.xzy}/demo/${ttt.bbb}\ntest${kkk.mmm}";
  11. 		Map<String, String> map = new HashMap<String, String>();
  12.         map.put("abc.xzy", "World");
  13.         map.put("ttt.bbb", "Hello");
  14.         map.put("kkk.mmm", "System");
  15. 		StringBuffer result = new StringBuffer();
  16. 		Matcher m = Pattern.compile("\\$\\{([^{}]+)\\}").matcher(s);
  17. 		while (m.find()) {
  18.     		String value = map.get(m.group(1));
  19.     		m.appendReplacement(result, value != null ? value : m.group());
  20. 		}
  21. 		m.appendTail(result);
  22. 		System.out.println(result.toString());
  23.  
  24. 	}
  25. }
Success #stdin #stdout 0.04s 2184192KB
comments (?)
stdin 
Standard input is empty
stdout 
World/demo/Hello
testSystem
https://ideone.com/GEWIrI
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
secret

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