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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.util.regex.Matcher;
  6. import java.util.regex.Pattern;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	public static void main (String[] args) throws java.lang.Exception
  12. 	{
  13. 		// your code goes here
  14. 		String data = "<root val=\"yyy\">\n<fo l der val=\"attribute 1\">myfol d er</folder>\n</root>";
  15. 		final Pattern p = Pattern.compile("(?s)(?<=<).*?(?=/?>|\\s*\\w+\\s*=)");
  16.         Matcher m = p.matcher(data); // your XML
  17.         StringBuffer sb = new StringBuffer();
  18.         while (m.find()) {
  19.            m.appendReplacement(sb, m.group().replace(" ", ""));
  20.         }
  21.         m.appendTail(sb);
  22.         data = sb.toString();
  23.         System.out.println(data);
  24. 	}
  25. }
Success #stdin #stdout 0.07s 380224KB
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stdin
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Standard input is empty
stdout
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<root val="yyy">
<folder val="attribute 1">myfol d er</folder>
</root>
https://ideone.com/TIrsQR
language:
Java (12.0.1)
created:
11 years ago
visibility:
public

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