/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String input = "{\"Glossary\":{\"Title\":\"Exampleglossary\",\"GlossDiv\":{\"title\":\"S\",\"GlossList\":{\"GlossEntry\":{\"ID\":\"SGML\",\"SortAs\":\"SGML\",\"GlossTerm\":\"StandardGeneralizedMarkupLanguage\",\"Acronym\":\"SGML\",\"Abbrev\":\"ISO8879:1986\",\"GlossDef\":{\"para\":\"Ameta-markuplanguage,usedtocreatemarkuplanguagessuchasDocBook.\",\"GlossSeeAlso\":[\"GML\",\"XML\"]},\"GlossSee\":\"markup\"}}}}}";
	    Pattern p = Pattern.compile("\"([A-Z])([^\"]*\"\\s*:)"); // matches '"Xxxx" :'
	    Matcher m = p.matcher(input);
	    StringBuffer output = new StringBuffer();
	    while (m.find()) {
	       m.appendReplacement(output, String.format("\"%s$2", m.group(1).toLowerCase()));
	    }
	    m.appendTail(output);
	    System.out.println(output.toString());
	}
}

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