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  1. import java.util.regex.Matcher;
  2. import java.util.regex.Pattern;
  3.  
  4. class Ideone
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		String str = "{abc:\"def\", ghi:\"jkl\"}";
  9. 		String regex = "(?:[{ ,])(\\w+)(?!\")";
  10. 		System.out.println(str.replaceAll(regex, "\\\"$1\\\""));
  11. 	}
  12. }
Success #stdin #stdout 0.04s 711168KB
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stdin
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Standard input is empty
stdout
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"abc":"def","ghi":"jkl"}
https://ideone.com/Sb2rdZ
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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